{"id":210,"date":"2026-07-15T08:24:41","date_gmt":"2026-07-15T08:24:41","guid":{"rendered":"https:\/\/squarefootcalc.com\/blog\/?p=210"},"modified":"2026-07-15T08:24:42","modified_gmt":"2026-07-15T08:24:42","slug":"how-to-calculate-square-footage-for-wallpaper","status":"publish","type":"post","link":"https:\/\/squarefootcalc.com\/blog\/how-to-calculate-square-footage-for-wallpaper\/","title":{"rendered":"How to Calculate Square Footage for Wallpaper"},"content":{"rendered":"\n<link href=\"https:\/\/fonts.googleapis.com\/css2?family=Playfair+Display:ital,wght@0,400;0,700;1,400&#038;family=Source+Serif+4:opsz,wght@8..60,300;8..60,400;8..60,600&#038;display=swap\" rel=\"stylesheet\">\n<style>\n  :root {\n    --ink: #1a1612;\n    --paper: #faf7f2;\n    --cream: #f2ede3;\n    --rust: #b84c2a;\n    --gold: #c9983a;\n    --teal: #2a7c72;\n    --muted: #6b6257;\n    --border: #d9d0c3;\n    --highlight: #fff8e8;\n  }\n\n  * { box-sizing: border-box; margin: 0; padding: 0; }\n\n  .subtitle { font-size: 1.1rem; color: var(--muted); line-height: 1.6; max-width: 640px; font-style: italic; margin-bottom: 8px; }\n  .divider { border: none; border-top: 1px solid var(--border); margin: 48px 0; }\n\n  h2 { font-family: 'Playfair Display', serif; font-size: 1.65rem; font-weight: 700; color: var(--ink); margin: 56px 0 16px; padding-bottom: 8px; border-bottom: 2px solid var(--gold); display: inline-block; }\n  h3 { font-family: 'Playfair Display', serif; font-size: 1.2rem; font-weight: 700; color: var(--ink); margin: 32px 0 12px; }\n\n  p { margin-bottom: 18px; font-size: 1rem; line-height: 1.75; color: var(--ink); }\n  a { color: var(--rust); text-decoration: none; }\n  a:hover { text-decoration: underline; }\n  strong { color: var(--ink); }\n\n  .toc { background: var(--cream); border: 1px solid var(--border); padding: 24px 28px; margin: 36px 0; border-radius: 3px; }\n  .toc-title { font-family: 'Playfair Display', serif; font-size: 0.95rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.1em; color: var(--muted); margin-bottom: 12px; }\n  .toc ol { padding-left: 20px; font-size: 0.95rem; color: var(--muted); }\n  .toc li { margin-bottom: 5px; }\n  .toc a { color: var(--muted); }\n  .toc a:hover { color: var(--rust); }\n\n  .formula-hero { background: var(--ink); color: white; border-radius: 4px; padding: 32px; margin: 32px 0; text-align: center; }\n  .formula-hero .label { font-family: 'Source Serif 4', serif; font-size: 0.78rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--gold); font-weight: 600; margin-bottom: 14px; }\n  .formula-hero .formula { font-family: 'Playfair Display', serif; font-size: 1.55rem; font-weight: 700; color: white; margin-bottom: 10px; line-height: 1.45; }\n  .formula-hero .note { font-size: 0.9rem; color: rgba(255,255,255,0.6); font-style: italic; }\n\n  .formula-box { background: var(--highlight); border-left: 3px solid var(--gold); padding: 14px 18px; margin: 20px 0; border-radius: 0 3px 3px 0; }\n  .formula-box .formula-label { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.12em; color: var(--muted); font-weight: 600; margin-bottom: 6px; }\n  .formula-box .formula-text { font-family: 'Playfair Display', serif; font-size: 1.05rem; color: var(--ink); line-height: 1.6; }\n\n  .steps { margin: 24px 0; }\n  .step { display: flex; gap: 18px; margin-bottom: 24px; align-items: flex-start; }\n  .step-num { min-width: 40px; height: 40px; background: var(--rust); color: white; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-family: 'Playfair Display', serif; font-weight: 700; font-size: 1rem; flex-shrink: 0; margin-top: 2px; }\n  .step-content { font-size: 0.98rem; color: var(--muted); line-height: 1.65; }\n  .step-content strong { display: block; color: var(--ink); font-size: 1.02rem; margin-bottom: 4px; }\n\n  .example-box { background: #f8faf9; border: 1px solid #c5d9d5; border-radius: 3px; padding: 14px 18px; font-size: 0.95rem; margin: 14px 0; color: var(--muted); line-height: 1.75; }\n  .example-box .ex-label { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.12em; color: var(--teal); font-weight: 600; margin-bottom: 6px; }\n  .example-box .ex-answer { font-size: 1.15rem; font-weight: 700; color: var(--teal); margin-top: 6px; display: block; }\n\n  \/* ROLL SIZE CARDS (analogous to tile-grid) *\/\n  .tile-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 14px; margin: 28px 0; }\n  @media (max-width: 560px) { .tile-grid { grid-template-columns: 1fr 1fr; } }\n  .tile-card { background: white; border: 1px solid var(--border); border-radius: 3px; padding: 18px 12px; text-align: center; }\n  .tile-size { font-family: 'Playfair Display', serif; font-size: 1.1rem; font-weight: 700; color: var(--ink); margin-bottom: 4px; }\n  .tile-sqft { font-size: 1.3rem; font-weight: 700; color: var(--rust); font-family: 'Playfair Display', serif; }\n  .tile-note { font-size: 0.78rem; color: var(--muted); margin-top: 4px; line-height: 1.4; }\n\n  \/* PATTERN MATCH CARDS (analogous to pattern-card) *\/\n  .pattern-card { background: white; border: 1px solid var(--border); border-radius: 4px; padding: 32px; margin: 36px 0; box-shadow: 0 2px 12px rgba(0,0,0,0.04); position: relative; }\n  .pattern-card::before { content: attr(data-label); position: absolute; top: -14px; left: 28px; background: var(--rust); color: white; font-family: 'Playfair Display', serif; font-size: 0.78rem; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; padding: 3px 12px; border-radius: 2px; }\n  .pattern-card.teal::before { background: var(--teal); }\n  .pattern-card.gold::before { background: var(--gold); }\n  .pattern-card.dark::before { background: #3a3530; }\n  .pattern-card h3 { font-size: 1.2rem; margin-top: 6px; margin-bottom: 6px; }\n  .pattern-meta { font-size: 0.9rem; color: var(--muted); margin-bottom: 20px; font-style: italic; }\n  .pattern-body { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; align-items: start; }\n  @media (max-width: 580px) { .pattern-body { grid-template-columns: 1fr; } .pattern-card { padding: 24px; } }\n  .pattern-svg-wrap { display: flex; justify-content: center; align-items: center; background: var(--cream); border-radius: 4px; padding: 16px; min-height: 180px; }\n  .pattern-svg-wrap svg { max-width: 100%; height: auto; display: block; }\n\n  .callout { background: var(--cream); border: 1px solid var(--border); border-radius: 4px; padding: 24px 28px; margin: 32px 0; }\n  .callout-title { font-family: 'Playfair Display', serif; font-size: 1.05rem; font-weight: 700; color: var(--ink); margin-bottom: 16px; }\n\n  table { width: 100%; border-collapse: collapse; margin: 28px 0; font-size: 0.95rem; }\n  thead tr { background: var(--ink); color: white; }\n  thead th { padding: 12px 16px; text-align: left; font-family: 'Source Serif 4', serif; font-weight: 600; font-size: 0.82rem; letter-spacing: 0.08em; text-transform: uppercase; }\n  tbody tr:nth-child(even) { background: var(--cream); }\n  tbody tr:nth-child(odd) { background: white; }\n  tbody td { padding: 11px 16px; border-bottom: 1px solid var(--border); color: var(--muted); }\n  tbody td:first-child { font-weight: 600; color: var(--ink); }\n\n  .tips-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin: 24px 0; }\n  @media (max-width: 520px) { .tips-grid { grid-template-columns: 1fr; } }\n  .tip-card { background: white; border: 1px solid var(--border); border-radius: 3px; padding: 18px 20px; }\n  .tip-card .tip-icon { font-size: 1.4rem; margin-bottom: 8px; }\n  .tip-card strong { display: block; color: var(--rust); margin-bottom: 4px; font-size: 0.88rem; letter-spacing: 0.05em; text-transform: uppercase; }\n  .tip-card p { margin: 0; color: var(--muted); line-height: 1.5; font-size: 0.93rem; }\n\n  .diagram-wrap { margin: 32px 0; background: var(--cream); border: 1px solid var(--border); border-radius: 4px; padding: 20px; overflow-x: auto; }\n  .diagram-wrap svg { display: block; margin: 0 auto; max-width: 100%; }\n\n  .examples-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin: 28px 0; }\n  @media (max-width: 540px) { .examples-grid { grid-template-columns: 1fr; } }\n  .ex-card { background: white; border: 1px solid var(--border); border-radius: 4px; padding: 22px 20px; position: relative; }\n  .ex-card::before { content: attr(data-room); position: absolute; top: -13px; left: 16px; background: var(--gold); color: white; font-family: 'Source Serif 4', serif; font-size: 0.74rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; padding: 3px 10px; border-radius: 2px; }\n  .ex-card h3 { font-size: 1.05rem; margin: 6px 0 10px; color: var(--ink); }\n  .ex-step { display: flex; gap: 10px; align-items: baseline; margin-bottom: 7px; font-size: 0.93rem; color: var(--muted); }\n  .ex-arrow { color: var(--gold); font-weight: 700; flex-shrink: 0; }\n  .ex-result { margin-top: 14px; background: #f8faf9; border: 1px solid #c5d9d5; border-radius: 3px; padding: 10px 14px; font-size: 1rem; font-weight: 700; color: var(--teal); }\n\n  .faq { margin: 24px 0; }\n  .faq-item { border-top: 1px solid var(--border); padding: 20px 0; }\n  .faq-q { font-family: 'Playfair Display', serif; font-size: 1.05rem; font-weight: 700; color: var(--ink); margin-bottom: 8px; }\n  .faq-a { color: var(--muted); font-size: 0.97rem; line-height: 1.7; margin: 0; }\n\n  .cta-box { background: var(--ink); color: white; border-radius: 4px; padding: 28px 32px; margin: 48px 0 24px; text-align: center; }\n  .cta-box p { color: rgba(255,255,255,0.75); margin-bottom: 16px; font-size: 0.97rem; }\n  .cta-btn { display: inline-block; background: var(--rust); color: white; font-family: 'Source Serif 4', serif; font-weight: 600; font-size: 0.9rem; letter-spacing: 0.06em; text-transform: uppercase; padding: 12px 28px; border-radius: 2px; text-decoration: none; }\n  .cta-btn:hover { background: #9e3e22; text-decoration: none; }\n<\/style>\n\n<!-- INTRO -->\n<header>\n  <p class=\"subtitle\">Wallpaper waste doesn&#8217;t come from the room&#8217;s shape \u2014 it comes from the pattern. Every repeat has to line up strip after strip, which means offcuts you can&#8217;t reuse and rolls you have to buy in whole numbers, not fractions. Underestimate the repeat and you&#8217;ll be short a roll from a print run that&#8217;s already sold out. Here&#8217;s how to get the count right.<\/p>\n<\/header>\n\n<div class=\"toc\">\n  <div class=\"toc-title\">In this guide<\/div>\n  <ol>\n    <li><a href=\"#formula\">The formula<\/a><\/li>\n    <li><a href=\"#steps\">Step-by-step process<\/a><\/li>\n    <li><a href=\"#wall-area\">Measuring wall area and subtracting openings<\/a><\/li>\n    <li><a href=\"#roll-sizes\">Roll sizes \u2014 American vs European<\/a><\/li>\n    <li><a href=\"#plain\">Plain and textured wallpaper<\/a><\/li>\n    <li><a href=\"#straight-match\">Straight match patterns<\/a><\/li>\n    <li><a href=\"#drop-match\">Drop match patterns<\/a><\/li>\n    <li><a href=\"#murals\">Large-scale murals and panels<\/a><\/li>\n    <li><a href=\"#examples\">Worked examples by room<\/a><\/li>\n    <li><a href=\"#reference\">Quick reference table<\/a><\/li>\n    <li><a href=\"#mistakes\">Mistakes to avoid<\/a><\/li>\n    <li><a href=\"#faq\">Frequently asked questions<\/a><\/li>\n  <\/ol>\n<\/div>\n\n<p>Wallpaper calculation shares the wall-area math you&#8217;d use for paint, but it adds a variable paint doesn&#8217;t have: pattern repeat. A plain grasscloth and a large-scale floral cost the same per roll but need completely different waste allowances, because every repeat forces you to shift the next strip up or down and trim off what doesn&#8217;t align.<\/p>\n\n<p>Have your room dimensions ready? Use <a href=\"https:\/\/squarefootcalc.com\/\">SquareFootCalc.com<\/a> to get your wall area in seconds, then apply the roll coverage and waste factor from this guide.<\/p>\n\n<hr class=\"divider\" id=\"formula\">\n\n<h2>The Formula<\/h2>\n\n<div class=\"formula-hero\">\n  <div class=\"label\">Wallpaper Order Formula<\/div>\n  <div class=\"formula\">Net wall area \u00d7 Waste factor \u00f7 Usable sq ft per roll = Rolls needed<br><br>Round UP to the nearest whole roll \u2014 always buy from one dye lot<\/div>\n  <div class=\"note\">Usable coverage is always lower than the sq ft printed on the roll label \u2014 pattern matching and trim eat into it before it ever reaches the wall.<\/div>\n<\/div>\n\n<div class=\"diagram-wrap\" style=\"padding:16px;\">\n  <svg width=\"100%\" viewBox=\"0 0 480 170\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"max-width:480px; display:block; margin:0 auto;\" role=\"img\">\n    <title>Wallpaper calculation flow: net wall area times waste factor divided by usable roll coverage equals rolls needed<\/title>\n    <defs>\n      <marker id=\"arr-w\" viewBox=\"0 0 10 10\" refX=\"9\" refY=\"5\" markerWidth=\"6\" markerHeight=\"6\" orient=\"auto\">\n        <path d=\"M1 2L8 5L1 8\" fill=\"none\" stroke=\"#c9983a\" stroke-width=\"2\" stroke-linecap=\"round\"\/>\n      <\/marker>\n    <\/defs>\n\n    <rect x=\"10\" y=\"30\" width=\"100\" height=\"80\" rx=\"4\" fill=\"#f5ede0\" stroke=\"#b84c2a\" stroke-width=\"1.5\"\/>\n    <text x=\"60\" y=\"58\" text-anchor=\"middle\" font-family=\"'Source Serif 4', serif\" font-size=\"10\" fill=\"#6b6257\">Net wall area<\/text>\n    <text x=\"60\" y=\"80\" text-anchor=\"middle\" font-family=\"'Playfair Display', serif\" font-size=\"20\" font-weight=\"700\" fill=\"#b84c2a\">280<\/text>\n    <text x=\"60\" y=\"98\" text-anchor=\"middle\" font-family=\"'Source Serif 4', serif\" font-size=\"10\" fill=\"#6b6257\">sq ft<\/text>\n    <text x=\"60\" y=\"130\" text-anchor=\"middle\" font-family=\"'Source Serif 4', serif\" font-size=\"9\" fill=\"#6b6257\">Openings out<\/text>\n\n    <line x1=\"114\" y1=\"70\" x2=\"148\" y2=\"70\" stroke=\"#c9983a\" stroke-width=\"2\" marker-end=\"url(#arr-w)\"\/>\n    <text x=\"131\" y=\"60\" text-anchor=\"middle\" font-family=\"'Source Serif 4', serif\" font-size=\"10\" fill=\"#8a6820\" font-weight=\"600\">\u00d7 1.20<\/text>\n    <text x=\"131\" y=\"85\" text-anchor=\"middle\" font-family=\"'Source Serif 4', serif\" font-size=\"9\" fill=\"#6b6257\">drop match<\/text>\n\n    <rect x=\"152\" y=\"30\" width=\"100\" height=\"80\" rx=\"4\" fill=\"#f0f8f5\" stroke=\"#2a7c72\" stroke-width=\"1.5\"\/>\n    <text x=\"202\" y=\"58\" text-anchor=\"middle\" font-family=\"'Source Serif 4', serif\" font-size=\"10\" fill=\"#6b6257\">With buffer<\/text>\n    <text x=\"202\" y=\"80\" text-anchor=\"middle\" font-family=\"'Playfair Display', serif\" font-size=\"20\" font-weight=\"700\" fill=\"#2a7c72\">336<\/text>\n    <text x=\"202\" y=\"98\" text-anchor=\"middle\" font-family=\"'Source Serif 4', serif\" font-size=\"10\" fill=\"#6b6257\">sq ft<\/text>\n    <text x=\"202\" y=\"130\" text-anchor=\"middle\" font-family=\"'Source Serif 4', serif\" font-size=\"9\" fill=\"#6b6257\">Pattern allowance added<\/text>\n\n    <line x1=\"256\" y1=\"70\" x2=\"290\" y2=\"70\" stroke=\"#c9983a\" stroke-width=\"2\" marker-end=\"url(#arr-w)\"\/>\n    <text x=\"273\" y=\"60\" text-anchor=\"middle\" font-family=\"'Source Serif 4', serif\" font-size=\"10\" fill=\"#8a6820\" font-weight=\"600\">\u00f7 30<\/text>\n    <text x=\"273\" y=\"85\" text-anchor=\"middle\" font-family=\"'Source Serif 4', serif\" font-size=\"9\" fill=\"#6b6257\">sq ft\/roll<\/text>\n\n    <rect x=\"294\" y=\"20\" width=\"176\" height=\"100\" rx=\"4\" fill=\"#1a1612\"\/>\n    <text x=\"382\" y=\"52\" text-anchor=\"middle\" font-family=\"'Source Serif 4', serif\" font-size=\"10\" fill=\"rgba(255,255,255,0.6)\">Rolls needed<\/text>\n    <text x=\"382\" y=\"82\" text-anchor=\"middle\" font-family=\"'Playfair Display', serif\" font-size=\"28\" font-weight=\"700\" fill=\"#c9983a\">12<\/text>\n    <text x=\"382\" y=\"104\" text-anchor=\"middle\" font-family=\"'Source Serif 4', serif\" font-size=\"10\" fill=\"rgba(255,255,255,0.6)\">rolls \u2014 round UP<\/text>\n    <text x=\"382\" y=\"138\" text-anchor=\"middle\" font-family=\"'Source Serif 4', serif\" font-size=\"9\" fill=\"#6b6257\">11.2 rounds to 12<\/text>\n  <\/svg>\n<\/div>\n\n<hr class=\"divider\" id=\"steps\">\n\n<h2>Step-by-Step Process<\/h2>\n\n<div class=\"steps\">\n  <div class=\"step\">\n    <div class=\"step-num\">1<\/div>\n    <div class=\"step-content\">\n      <strong>Measure the room&#8217;s perimeter and wall height<\/strong>\n      Add up all four walls, then multiply by ceiling height to get gross wall area \u2014 the same starting point as a paint calculation.\n      <div class=\"example-box\" style=\"margin-top:10px;\">\n        <div class=\"ex-label\">Example \u2014 14\u00d712 ft room, 9 ft ceiling<\/div>\n        Perimeter: 2 \u00d7 (14+12) = 52 ft \u00b7 Gross area: 52 \u00d7 9 = <strong>468 sq ft<\/strong>\n      <\/div>\n    <\/div>\n  <\/div>\n  <div class=\"step\">\n    <div class=\"step-num\">2<\/div>\n    <div class=\"step-content\">\n      <strong>Subtract doors, windows, and large fixtures<\/strong>\n      Same openings you&#8217;d subtract for paint \u2014 roughly 20 sq ft per door, 15 sq ft per standard window.\n      <div class=\"example-box\" style=\"margin-top:10px;\">\n        <div class=\"ex-label\">2 doors + 2 windows<\/div>\n        468 \u2212 (40 + 30) = <strong>398 sq ft net wall area<\/strong>\n      <\/div>\n    <\/div>\n  <\/div>\n  <div class=\"step\">\n    <div class=\"step-num\">3<\/div>\n    <div class=\"step-content\">\n      <strong>Choose the waste factor for your pattern type<\/strong>\n      Plain or textured papers need 10%. Straight match needs 15%. Drop match patterns with a large repeat can need 20\u201325%. Full breakdown in the sections below.\n    <\/div>\n  <\/div>\n  <div class=\"step\">\n    <div class=\"step-num\">4<\/div>\n    <div class=\"step-content\">\n      <strong>Multiply net wall area by the waste factor<\/strong>\n      <div class=\"example-box\" style=\"margin-top:10px;\">\n        <div class=\"ex-label\">Straight match, 15%<\/div>\n        398 \u00d7 1.15 = <strong>457.7 sq ft needed<\/strong>\n      <\/div>\n    <\/div>\n  <\/div>\n  <div class=\"step\">\n    <div class=\"step-num\">5<\/div>\n    <div class=\"step-content\">\n      <strong>Divide by usable coverage per roll \u2014 round up<\/strong>\n      Usable coverage runs 28\u201330 sq ft per single roll after trim, even though the roll&#8217;s printed length suggests more.\n      <div class=\"example-box\" style=\"margin-top:10px;\">\n        <div class=\"ex-label\">At 30 sq ft usable per roll<\/div>\n        457.7 \u00f7 30 = 15.3 \u2192 <span class=\"ex-answer\">Buy 16 rolls<\/span>\n      <\/div>\n    <\/div>\n  <\/div>\n<\/div>\n\n<hr class=\"divider\" id=\"wall-area\">\n\n<h2>Measuring Wall Area and Subtracting Openings<\/h2>\n\n<p>Wallpaper starts from the exact same wall-area calculation as paint: perimeter times height, minus doors and windows. The difference shows up later, in how the material comes off the roll in fixed-width, fixed-pattern strips rather than spreading evenly like liquid paint.<\/p>\n\n<div class=\"formula-box\">\n  <div class=\"formula-label\">Wall area formula<\/div>\n  <div class=\"formula-text\">Perimeter \u00d7 Height = Gross wall area<br>Subtract openings: door \u2248 20 sq ft, window \u2248 15 sq ft, large mirror or built-in \u2248 10\u201315 sq ft<\/div>\n<\/div>\n\n<div class=\"callout\">\n  <div class=\"callout-title\">Don&#8217;t subtract small openings<\/div>\n  <p>Outlets, switches, and small wall fixtures aren&#8217;t worth subtracting \u2014 the strip still has to be cut to run past them, so the material gets used either way. Save the subtraction for openings large enough to skip an entire strip, like doors, windows, and built-in shelving.<\/p>\n<\/div>\n\n<hr class=\"divider\" id=\"roll-sizes\">\n\n<h2>Roll Sizes \u2014 American vs European<\/h2>\n\n<p>Wallpaper isn&#8217;t sold in a single global standard, and the roll&#8217;s printed length overstates what actually reaches your wall. Trimming for straight edges and shifting for pattern match both cut into the usable total.<\/p>\n\n<div class=\"tile-grid\">\n  <div class=\"tile-card\">\n    <div class=\"tile-size\">American Single Roll<\/div>\n    <div class=\"tile-sqft\">~28\u201330 sq ft usable<\/div>\n    <div class=\"tile-note\">27 in wide, sold individually or bundled as double rolls<\/div>\n  <\/div>\n  <div class=\"tile-card\">\n    <div class=\"tile-size\">American Double Roll<\/div>\n    <div class=\"tile-sqft\">~56\u201360 sq ft usable<\/div>\n    <div class=\"tile-note\">Most common bolt size in US big-box stores<\/div>\n  <\/div>\n  <div class=\"tile-card\">\n    <div class=\"tile-size\">European Roll<\/div>\n    <div class=\"tile-sqft\">~28\u201333 sq ft usable<\/div>\n    <div class=\"tile-note\">20.5 in \u00d7 33 ft \u2014 common for designer and imported patterns<\/div>\n  <\/div>\n  <div class=\"tile-card\">\n    <div class=\"tile-size\">Wide-Format Roll<\/div>\n    <div class=\"tile-sqft\">Varies<\/div>\n    <div class=\"tile-note\">36 in wide, fewer seams per wall \u2014 check coverage per listing<\/div>\n  <\/div>\n  <div class=\"tile-card\">\n    <div class=\"tile-size\">Grasscloth \/ Textured<\/div>\n    <div class=\"tile-sqft\">~24\u201328 sq ft usable<\/div>\n    <div class=\"tile-note\">No pattern match, but natural fiber shading needs sequential rolls<\/div>\n  <\/div>\n  <div class=\"tile-card\">\n    <div class=\"tile-size\">Mural Panel<\/div>\n    <div class=\"tile-sqft\">Sized to order<\/div>\n    <div class=\"tile-note\">Panels are custom-cut to your exact wall \u2014 see the mural section below<\/div>\n  <\/div>\n<\/div>\n\n<div class=\"formula-box\">\n  <div class=\"formula-label\">A safe default<\/div>\n  <div class=\"formula-text\">If your roll&#8217;s usable coverage isn&#8217;t listed, use 30 sq ft per single roll. It&#8217;s a conservative, commonly used figure that accounts for standard trim loss even before pattern matching is added on top.<\/div>\n<\/div>\n\n<hr class=\"divider\" id=\"plain\">\n\n<!-- PLAIN \/ TEXTURED -->\n<div class=\"pattern-card\" data-label=\"Pattern 01\">\n  <h3>Plain and Textured Wallpaper<\/h3>\n  <div class=\"pattern-meta\">Solid colors, grasscloth, linen weaves \u2014 no motif to align, so strips can run in any order<\/div>\n  <div class=\"pattern-body\">\n    <div class=\"pattern-svg-wrap\">\n      <svg viewBox=\"0 0 220 220\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"220\" height=\"220\">\n        <rect x=\"20\" y=\"10\" width=\"34\" height=\"150\" fill=\"#f5ede0\" stroke=\"#b84c2a\" stroke-width=\"1.5\"\/>\n        <rect x=\"58\" y=\"10\" width=\"34\" height=\"150\" fill=\"#f0e6d0\" stroke=\"#b84c2a\" stroke-width=\"1.5\"\/>\n        <rect x=\"96\" y=\"10\" width=\"34\" height=\"150\" fill=\"#f5ede0\" stroke=\"#b84c2a\" stroke-width=\"1.5\"\/>\n        <rect x=\"134\" y=\"10\" width=\"34\" height=\"150\" fill=\"#f0e6d0\" stroke=\"#b84c2a\" stroke-width=\"1.5\"\/>\n        <rect x=\"172\" y=\"10\" width=\"34\" height=\"150\" fill=\"#f5ede0\" stroke=\"#b84c2a\" stroke-width=\"1.5\"\/>\n        <text x=\"113\" y=\"90\" text-anchor=\"middle\" font-family=\"'Playfair Display', serif\" font-size=\"11\" font-weight=\"700\" fill=\"#8a5a2e\">No alignment needed<\/text>\n        <rect x=\"20\" y=\"192\" width=\"186\" height=\"22\" rx=\"3\" fill=\"#1a1612\"\/>\n        <text x=\"113\" y=\"207\" text-anchor=\"middle\" font-family=\"'Playfair Display', serif\" font-size=\"11\" font-weight=\"700\" fill=\"#c9983a\">Add 10% waste<\/text>\n      <\/svg>\n    <\/div>\n    <div>\n      <div class=\"formula-box\">\n        <div class=\"formula-label\">Waste factor<\/div>\n        <div class=\"formula-text\">10% \u2014 the lowest of any wallpaper type<br>Strips can be cut and hung in any order without matching a design across the seam<\/div>\n      <\/div>\n      <p style=\"font-size:0.95rem; color:var(--muted); margin-bottom:14px;\">Solid colors and non-directional textures are the closest thing to a plain-paint calculation you&#8217;ll get with wallpaper. The waste is just trim at the ceiling line and baseboard, plus the standard buffer for a miscut strip here and there.<\/p>\n      <div class=\"example-box\">\n        <div class=\"ex-label\">Bedroom accent wall \u2014 120 sq ft net, textured grasscloth<\/div>\n        120 \u00d7 1.10 = 132 sq ft<br>\n        132 \u00f7 26 (grasscloth usable) = 5.1<br>\n        <span class=\"ex-answer\">\u2192 Buy 6 rolls<\/span>\n      <\/div>\n    <\/div>\n  <\/div>\n<\/div>\n\n<hr class=\"divider\" id=\"straight-match\">\n\n<!-- STRAIGHT MATCH -->\n<div class=\"pattern-card teal\" data-label=\"Pattern 02\">\n  <h3>Straight Match Patterns<\/h3>\n  <div class=\"pattern-meta\">The design repeats at the same height across every strip \u2014 motifs line up in a straight horizontal row<\/div>\n  <div class=\"pattern-body\">\n    <div class=\"pattern-svg-wrap\">\n      <svg viewBox=\"0 0 220 220\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"220\" height=\"220\">\n        <rect x=\"20\" y=\"10\" width=\"186\" height=\"150\" fill=\"#e8f2f0\" stroke=\"#2a7c72\" stroke-width=\"1.5\"\/>\n        <circle cx=\"37\" cy=\"35\" r=\"6\" fill=\"#2a7c72\"\/>\n        <circle cx=\"37\" cy=\"85\" r=\"6\" fill=\"#2a7c72\"\/>\n        <circle cx=\"37\" cy=\"135\" r=\"6\" fill=\"#2a7c72\"\/>\n        <circle cx=\"75\" cy=\"35\" r=\"6\" fill=\"#2a7c72\"\/>\n        <circle cx=\"75\" cy=\"85\" r=\"6\" fill=\"#2a7c72\"\/>\n        <circle cx=\"75\" cy=\"135\" r=\"6\" fill=\"#2a7c72\"\/>\n        <circle cx=\"113\" cy=\"35\" r=\"6\" fill=\"#2a7c72\"\/>\n        <circle cx=\"113\" cy=\"85\" r=\"6\" fill=\"#2a7c72\"\/>\n        <circle cx=\"113\" cy=\"135\" r=\"6\" fill=\"#2a7c72\"\/>\n        <circle cx=\"151\" cy=\"35\" r=\"6\" fill=\"#2a7c72\"\/>\n        <circle cx=\"151\" cy=\"85\" r=\"6\" fill=\"#2a7c72\"\/>\n        <circle cx=\"151\" cy=\"135\" r=\"6\" fill=\"#2a7c72\"\/>\n        <circle cx=\"189\" cy=\"35\" r=\"6\" fill=\"#2a7c72\"\/>\n        <circle cx=\"189\" cy=\"85\" r=\"6\" fill=\"#2a7c72\"\/>\n        <circle cx=\"189\" cy=\"135\" r=\"6\" fill=\"#2a7c72\"\/>\n        <line x1=\"20\" y1=\"35\" x2=\"206\" y2=\"35\" stroke=\"#1a5147\" stroke-width=\"1\" stroke-dasharray=\"3,2\"\/>\n        <rect x=\"20\" y=\"192\" width=\"186\" height=\"22\" rx=\"3\" fill=\"#1a1612\"\/>\n        <text x=\"113\" y=\"207\" text-anchor=\"middle\" font-family=\"'Playfair Display', serif\" font-size=\"11\" font-weight=\"700\" fill=\"#c9983a\">Add 15% waste<\/text>\n      <\/svg>\n    <\/div>\n    <div>\n      <div class=\"formula-box\" style=\"border-left-color:var(--teal);\">\n        <div class=\"formula-label\">Waste factor<\/div>\n        <div class=\"formula-text\">15% for most straight match patterns with a repeat under 12 inches<br>18% if the repeat runs 12\u201320 inches<\/div>\n      <\/div>\n      <p style=\"font-size:0.95rem; color:var(--muted); margin-bottom:14px;\">Every strip lines up motif-to-motif with the one beside it, at the same height. The waste comes from trimming each new strip so its pattern starts at the right point \u2014 the offcut at the top of most strips is too short to reuse anywhere else on the wall.<\/p>\n      <div class=\"example-box\">\n        <div class=\"ex-label\">Dining room \u2014 300 sq ft net wall, 10 in repeat<\/div>\n        300 \u00d7 1.15 = 345 sq ft<br>\n        345 \u00f7 30 = 11.5<br>\n        <span class=\"ex-answer\">\u2192 Buy 12 rolls<\/span>\n      <\/div>\n    <\/div>\n  <\/div>\n<\/div>\n\n<hr class=\"divider\" id=\"drop-match\">\n\n<!-- DROP MATCH -->\n<div class=\"pattern-card gold\" data-label=\"Pattern 03\">\n  <h3>Drop Match Patterns<\/h3>\n  <div class=\"pattern-meta\">The motif shifts halfway down on every other strip \u2014 visually rich, but every alternate strip loses more to the offcut<\/div>\n  <div class=\"pattern-body\">\n    <div class=\"pattern-svg-wrap\">\n      <svg viewBox=\"0 0 220 220\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"220\" height=\"220\">\n        <rect x=\"20\" y=\"10\" width=\"186\" height=\"150\" fill=\"#fff8e8\" stroke=\"#c9983a\" stroke-width=\"1.5\"\/>\n        <circle cx=\"37\" cy=\"30\" r=\"6\" fill=\"#c9983a\"\/>\n        <circle cx=\"37\" cy=\"80\" r=\"6\" fill=\"#c9983a\"\/>\n        <circle cx=\"37\" cy=\"130\" r=\"6\" fill=\"#c9983a\"\/>\n        <circle cx=\"75\" cy=\"55\" r=\"6\" fill=\"#8a5a2e\"\/>\n        <circle cx=\"75\" cy=\"105\" r=\"6\" fill=\"#8a5a2e\"\/>\n        <circle cx=\"75\" cy=\"155\" r=\"6\" fill=\"#8a5a2e\"\/>\n        <circle cx=\"113\" cy=\"30\" r=\"6\" fill=\"#c9983a\"\/>\n        <circle cx=\"113\" cy=\"80\" r=\"6\" fill=\"#c9983a\"\/>\n        <circle cx=\"113\" cy=\"130\" r=\"6\" fill=\"#c9983a\"\/>\n        <circle cx=\"151\" cy=\"55\" r=\"6\" fill=\"#8a5a2e\"\/>\n        <circle cx=\"151\" cy=\"105\" r=\"6\" fill=\"#8a5a2e\"\/>\n        <circle cx=\"151\" cy=\"155\" r=\"6\" fill=\"#8a5a2e\"\/>\n        <circle cx=\"189\" cy=\"30\" r=\"6\" fill=\"#c9983a\"\/>\n        <circle cx=\"189\" cy=\"80\" r=\"6\" fill=\"#c9983a\"\/>\n        <circle cx=\"189\" cy=\"130\" r=\"6\" fill=\"#c9983a\"\/>\n        <text x=\"113\" y=\"180\" text-anchor=\"middle\" font-family=\"'Source Serif 4', serif\" font-size=\"8\" fill=\"#6b6257\">offset strips waste more at the top<\/text>\n        <rect x=\"20\" y=\"192\" width=\"186\" height=\"22\" rx=\"3\" fill=\"#1a1612\"\/>\n        <text x=\"113\" y=\"207\" text-anchor=\"middle\" font-family=\"'Playfair Display', serif\" font-size=\"11\" font-weight=\"700\" fill=\"#c9983a\">Add 20\u201325% waste<\/text>\n      <\/svg>\n    <\/div>\n    <div>\n      <div class=\"formula-box\" style=\"border-left-color:var(--gold);\">\n        <div class=\"formula-label\">Waste factor<\/div>\n        <div class=\"formula-text\">20% for a moderate drop repeat (under 20 in)<br>25% for a large-scale drop repeat (20 in or more)<\/div>\n      <\/div>\n      <p style=\"font-size:0.95rem; color:var(--muted); margin-bottom:14px;\">Half the strips in a drop match start partway into the repeat, which means those strips lose more to the trim than a straight match ever does. Large florals and damasks are usually drop match \u2014 check the manufacturer&#8217;s spec sheet for the exact repeat measurement before calculating.<\/p>\n      <div class=\"example-box\">\n        <div class=\"ex-label\">Powder room feature wall \u2014 90 sq ft net, 21 in drop repeat<\/div>\n        90 \u00d7 1.25 = 112.5 sq ft<br>\n        112.5 \u00f7 30 = 3.75<br>\n        <span class=\"ex-answer\">\u2192 Buy 4 rolls<\/span>\n      <\/div>\n    <\/div>\n  <\/div>\n<\/div>\n\n<hr class=\"divider\" id=\"murals\">\n\n<!-- MURALS -->\n<div class=\"pattern-card dark\" data-label=\"Pattern 04\">\n  <h3>Large-Scale Murals and Panels<\/h3>\n  <div class=\"pattern-meta\">Custom-printed to your exact wall dimensions \u2014 the calculation is closer to ordering a photograph than buying rolls<\/div>\n  <div class=\"pattern-body\">\n    <div class=\"pattern-svg-wrap\">\n      <svg viewBox=\"0 0 220 220\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"220\" height=\"220\">\n        <rect x=\"20\" y=\"10\" width=\"186\" height=\"150\" fill=\"#e8e2d5\" stroke=\"#3a3530\" stroke-width=\"1.5\"\/>\n        <rect x=\"30\" y=\"20\" width=\"80\" height=\"130\" fill=\"#d9d0c3\" stroke=\"#3a3530\" stroke-width=\"1\"\/>\n        <rect x=\"116\" y=\"20\" width=\"80\" height=\"130\" fill=\"#e8e2d5\" stroke=\"#3a3530\" stroke-width=\"1\"\/>\n        <text x=\"70\" y=\"90\" text-anchor=\"middle\" font-family=\"'Source Serif 4', serif\" font-size=\"8\" fill=\"#6b6257\">Panel 1<\/text>\n        <text x=\"156\" y=\"90\" text-anchor=\"middle\" font-family=\"'Source Serif 4', serif\" font-size=\"8\" fill=\"#6b6257\">Panel 2<\/text>\n        <rect x=\"20\" y=\"192\" width=\"186\" height=\"22\" rx=\"3\" fill=\"#1a1612\"\/>\n        <text x=\"113\" y=\"207\" text-anchor=\"middle\" font-family=\"'Playfair Display', serif\" font-size=\"11\" font-weight=\"700\" fill=\"#c9983a\">Add 5\u201310% only<\/text>\n      <\/svg>\n    <\/div>\n    <div>\n      <div class=\"formula-box\" style=\"border-left-color:#3a3530;\">\n        <div class=\"formula-label\">Waste factor<\/div>\n        <div class=\"formula-text\">5\u201310% \u2014 much lower than repeating patterns<br>The image is already sized and split into panels to fit your exact wall before it&#8217;s printed<\/div>\n      <\/div>\n      <p style=\"font-size:0.95rem; color:var(--muted); margin-bottom:14px;\">Murals flip the usual process: you give the supplier your wall&#8217;s exact width and height, and the image is scaled and split into panels to match \u2014 there&#8217;s no pattern repeat to align because there&#8217;s only one continuous image. The small waste allowance covers trim at the ceiling and floor line, plus a margin for a panel that doesn&#8217;t sit perfectly plumb.<\/p>\n      <div class=\"example-box\">\n        <div class=\"ex-label\">Accent wall mural \u2014 9 ft \u00d7 8 ft wall<\/div>\n        Order panels sized to 9 ft \u00d7 8 ft, plus 6 in of trim margin on each side<br>\n        <span class=\"ex-answer\">\u2192 Confirm exact panel count with the supplier&#8217;s layout tool<\/span>\n      <\/div>\n    <\/div>\n  <\/div>\n<\/div>\n\n<hr class=\"divider\" id=\"examples\">\n\n<h2>Worked Examples by Room<\/h2>\n\n<div class=\"examples-grid\">\n  <div class=\"ex-card\" data-room=\"Bedroom\">\n    <h3>12\u00d711 ft, 8 ft ceiling, plain textured paper<\/h3>\n    <div class=\"ex-step\"><span class=\"ex-arrow\">\u2192<\/span> Perimeter: 2\u00d7(12+11)=46 ft \u2192 Gross: 46\u00d78=368 sq ft<\/div>\n    <div class=\"ex-step\"><span class=\"ex-arrow\">\u2192<\/span> Openings: 50 sq ft \u2192 Net: 318 sq ft<\/div>\n    <div class=\"ex-step\"><span class=\"ex-arrow\">\u2192<\/span> 318 \u00d7 1.10 = 349.8 sq ft<\/div>\n    <div class=\"ex-step\"><span class=\"ex-arrow\">\u2192<\/span> 349.8 \u00f7 30 = 11.7<\/div>\n    <div class=\"ex-result\">Buy 12 rolls<\/div>\n  <\/div>\n  <div class=\"ex-card\" data-room=\"Dining Room\">\n    <h3>14\u00d712 ft, 9 ft ceiling, straight match pattern<\/h3>\n    <div class=\"ex-step\"><span class=\"ex-arrow\">\u2192<\/span> Perimeter: 52 ft \u2192 Gross: 468 sq ft<\/div>\n    <div class=\"ex-step\"><span class=\"ex-arrow\">\u2192<\/span> Openings: 68 sq ft \u2192 Net: 400 sq ft<\/div>\n    <div class=\"ex-step\"><span class=\"ex-arrow\">\u2192<\/span> 400 \u00d7 1.15 = 460 sq ft<\/div>\n    <div class=\"ex-step\"><span class=\"ex-arrow\">\u2192<\/span> 460 \u00f7 30 = 15.3<\/div>\n    <div class=\"ex-result\">Buy 16 rolls<\/div>\n  <\/div>\n  <div class=\"ex-card\" data-room=\"Powder Room\">\n    <h3>6\u00d75 ft, 8 ft ceiling, drop match, no windows<\/h3>\n    <div class=\"ex-step\"><span class=\"ex-arrow\">\u2192<\/span> Perimeter: 22 ft \u2192 Gross: 176 sq ft<\/div>\n    <div class=\"ex-step\"><span class=\"ex-arrow\">\u2192<\/span> Openings: 20 sq ft \u2192 Net: 156 sq ft<\/div>\n    <div class=\"ex-step\"><span class=\"ex-arrow\">\u2192<\/span> 156 \u00d7 1.25 = 195 sq ft<\/div>\n    <div class=\"ex-step\"><span class=\"ex-arrow\">\u2192<\/span> 195 \u00f7 30 = 6.5<\/div>\n    <div class=\"ex-result\">Buy 7 rolls<\/div>\n  <\/div>\n  <div class=\"ex-card\" data-room=\"Nursery Accent Wall\">\n    <h3>10\u00d78 ft single wall, 9 ft ceiling, drop match<\/h3>\n    <div class=\"ex-step\"><span class=\"ex-arrow\">\u2192<\/span> One wall: 10 \u00d7 9 = 90 sq ft gross<\/div>\n    <div class=\"ex-step\"><span class=\"ex-arrow\">\u2192<\/span> No openings on this wall \u2192 Net: 90 sq ft<\/div>\n    <div class=\"ex-step\"><span class=\"ex-arrow\">\u2192<\/span> 90 \u00d7 1.20 = 108 sq ft<\/div>\n    <div class=\"ex-step\"><span class=\"ex-arrow\">\u2192<\/span> 108 \u00f7 30 = 3.6<\/div>\n    <div class=\"ex-result\">Buy 4 rolls<\/div>\n  <\/div>\n<\/div>\n\n<hr class=\"divider\" id=\"reference\">\n\n<h2>Quick Reference Table<\/h2>\n\n<table>\n  <thead>\n    <tr>\n      <th>Room Size<\/th>\n      <th>Net Wall Area (approx.)<\/th>\n      <th>Plain (10%)<\/th>\n      <th>Straight Match (15%)<\/th>\n      <th>Drop Match (20\u201325%)<\/th>\n    <\/tr>\n  <\/thead>\n  <tbody>\n    <tr><td>10 \u00d7 10 ft<\/td><td>270 sq ft<\/td><td>10 rolls<\/td><td>11 rolls<\/td><td>12 rolls<\/td><\/tr>\n    <tr><td>12 \u00d7 11 ft<\/td><td>318 sq ft<\/td><td>12 rolls<\/td><td>13 rolls<\/td><td>14 rolls<\/td><\/tr>\n    <tr><td>14 \u00d7 12 ft<\/td><td>400 sq ft<\/td><td>15 rolls<\/td><td>16 rolls<\/td><td>17 rolls<\/td><\/tr>\n    <tr><td>Single accent wall (10\u00d79 ft)<\/td><td>90 sq ft<\/td><td>4 rolls<\/td><td>4 rolls<\/td><td>4 rolls<\/td><\/tr>\n  <\/tbody>\n<\/table>\n\n<p style=\"font-size:.88em; color:var(--muted)\">Figures assume 30 sq ft usable coverage per single roll. Adjust for your specific roll&#8217;s listed coverage and repeat size.<\/p>\n\n<hr class=\"divider\" id=\"mistakes\">\n\n<h2>Mistakes to Avoid<\/h2>\n\n<div class=\"tips-grid\">\n  <div class=\"tip-card\">\n    <div class=\"tip-icon\">\ud83d\udccf<\/div>\n    <strong>Using the roll&#8217;s printed length as usable coverage<\/strong>\n    <p>A roll listed at 56 sq ft doesn&#8217;t put 56 sq ft on the wall \u2014 trim and pattern matching bring usable coverage down to roughly 28\u201330 sq ft. Calculating off the label number will leave you short.<\/p>\n  <\/div>\n  <div class=\"tip-card\">\n    <div class=\"tip-icon\">\ud83d\udd01<\/div>\n    <strong>Treating drop match like straight match<\/strong>\n    <p>Drop match patterns need a noticeably higher waste factor. Using a straight-match number on a drop-match paper is one of the most common reasons installers run short mid-room.<\/p>\n  <\/div>\n  <div class=\"tip-card\">\n    <div class=\"tip-icon\">\ud83c\udfa8<\/div>\n    <strong>Mixing dye lots<\/strong>\n    <p>Every roll needs to come from the same production run. Ordering rolls separately over time, or buying &#8220;just one more&#8221; from a different batch, risks a visible color shift across the wall.<\/p>\n  <\/div>\n  <div class=\"tip-card\">\n    <div class=\"tip-icon\">\ud83e\ude9f<\/div>\n    <strong>Forgetting to subtract large openings<\/strong>\n    <p>Doors, windows, and built-ins should come out of your gross wall area before you apply the waste factor. Skipping this step overstates your roll count and your budget.<\/p>\n  <\/div>\n  <div class=\"tip-card\">\n    <div class=\"tip-icon\">\ud83d\udce6<\/div>\n    <strong>Not checking discontinued status before ordering<\/strong>\n    <p>Wallpaper patterns get discontinued more often than paint colors. If a pattern is limited-run, order a spare roll upfront \u2014 reordering later may not be possible at all.<\/p>\n  <\/div>\n  <div class=\"tip-card\">\n    <div class=\"tip-icon\">\ud83e\uddee<\/div>\n    <strong>Rounding down to save a roll<\/strong>\n    <p>If your calculation lands at 15.3 rolls, buy 16. A short order mid-installation means a delay while you wait on a reorder, plus the same dye-lot risk all over again.<\/p>\n  <\/div>\n<\/div>\n\n<hr class=\"divider\" id=\"faq\">\n\n<h2>Frequently Asked Questions<\/h2>\n\n<div class=\"faq\">\n  <div class=\"faq-item\">\n    <div class=\"faq-q\">How many rolls of wallpaper do I need for a 12\u00d712 room?<\/div>\n    <p class=\"faq-a\">With an 8 ft ceiling: perimeter is 48 ft, gross wall area is 384 sq ft. Subtracting typical openings (35 sq ft) leaves 349 sq ft net. At 15% waste for a straight match pattern: 349 \u00d7 1.15 = 401 sq ft, divided by 30 sq ft usable per roll = about 14 rolls.<\/p>\n  <\/div>\n  <div class=\"faq-item\">\n    <div class=\"faq-q\">What&#8217;s the difference between straight match and drop match?<\/div>\n    <p class=\"faq-a\">Straight match means the pattern repeats at the same height on every strip, so motifs line up in a straight horizontal row. Drop match means the pattern on alternating strips shifts down by half the repeat, creating a more organic look but wasting more material at the top of every other strip.<\/p>\n  <\/div>\n  <div class=\"faq-item\">\n    <div class=\"faq-q\">How much wallpaper waste should I expect?<\/div>\n    <p class=\"faq-a\">10% for plain or textured paper, 15% for straight match, and 20\u201325% for drop match patterns with a large repeat. Murals are the exception, needing only 5\u201310% since the image is custom-sized to your wall.<\/p>\n  <\/div>\n  <div class=\"faq-item\">\n    <div class=\"faq-q\">Does one roll of wallpaper really cover less than its listed square footage?<\/div>\n    <p class=\"faq-a\">Yes. A roll&#8217;s printed length overstates what ends up on the wall once you account for trimming at the ceiling and baseboard, plus the offcuts from pattern matching. Using 28\u201330 sq ft of usable coverage per single roll is a safer planning number than the label&#8217;s raw square footage.<\/p>\n  <\/div>\n  <div class=\"faq-item\">\n    <div class=\"faq-q\">Should I order extra wallpaper beyond my calculation?<\/div>\n    <p class=\"faq-a\">Round your roll count up rather than down, and if the pattern is a limited or discontinued print, consider one additional roll beyond that for future repairs. Wallpaper reprints aren&#8217;t guaranteed to match years later even from the same manufacturer.<\/p>\n  <\/div>\n  <div class=\"faq-item\">\n    <div class=\"faq-q\">How is a wallpaper mural calculated differently from standard rolls?<\/div>\n    <p class=\"faq-a\">Murals are ordered by your exact wall dimensions rather than by the roll. You provide width and height, the supplier scales the image and splits it into panels sized to fit, and the waste allowance drops to 5\u201310% since there&#8217;s no repeating pattern to align.<\/p>\n  <\/div>\n<\/div>\n\n<div class=\"cta-box\">\n  <p>Have your room dimensions? Get your wall area instantly.<\/p>\n  <a href=\"https:\/\/squarefootcalc.com\/\" class=\"cta-btn\">Calculate Square Footage Free \u2192<\/a>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Wallpaper waste doesn&#8217;t come from the room&#8217;s shape \u2014 it comes from the pattern. Every repeat has to line up strip after strip, which means offcuts you can&#8217;t reuse and rolls you have to buy in whole numbers, not fractions. Underestimate the repeat and you&#8217;ll be short a roll from a print run that&#8217;s already&#8230;<\/p>\n","protected":false},"author":1,"featured_media":211,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-210","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"taxonomy_info":{"category":[{"value":1,"label":"Blog"}]},"featured_image_src_large":["https:\/\/squarefootcalc.com\/blog\/wp-content\/uploads\/2026\/07\/How-to-Calculate-Square-Footage-for-Wallpaper-1024x687.webp",1024,687,true],"author_info":{"display_name":"Luke","author_link":"https:\/\/squarefootcalc.com\/blog\/author\/aziz315\/"},"comment_info":0,"category_info":[{"term_id":1,"name":"Blog","slug":"blog","term_group":0,"term_taxonomy_id":1,"taxonomy":"category","description":"","parent":0,"count":30,"filter":"raw","cat_ID":1,"category_count":30,"category_description":"","cat_name":"Blog","category_nicename":"blog","category_parent":0}],"tag_info":false,"_links":{"self":[{"href":"https:\/\/squarefootcalc.com\/blog\/wp-json\/wp\/v2\/posts\/210","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/squarefootcalc.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/squarefootcalc.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/squarefootcalc.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/squarefootcalc.com\/blog\/wp-json\/wp\/v2\/comments?post=210"}],"version-history":[{"count":1,"href":"https:\/\/squarefootcalc.com\/blog\/wp-json\/wp\/v2\/posts\/210\/revisions"}],"predecessor-version":[{"id":213,"href":"https:\/\/squarefootcalc.com\/blog\/wp-json\/wp\/v2\/posts\/210\/revisions\/213"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/squarefootcalc.com\/blog\/wp-json\/wp\/v2\/media\/211"}],"wp:attachment":[{"href":"https:\/\/squarefootcalc.com\/blog\/wp-json\/wp\/v2\/media?parent=210"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/squarefootcalc.com\/blog\/wp-json\/wp\/v2\/categories?post=210"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/squarefootcalc.com\/blog\/wp-json\/wp\/v2\/tags?post=210"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}