{"id":113,"date":"2026-05-12T13:53:42","date_gmt":"2026-05-12T13:53:42","guid":{"rendered":"https:\/\/serviceagent.ai\/tools\/?page_id=113"},"modified":"2026-05-19T11:05:36","modified_gmt":"2026-05-19T11:05:36","slug":"stair-calculator","status":"publish","type":"page","link":"https:\/\/serviceagent.ai\/tools\/stair-calculator\/","title":{"rendered":"Stair Calculator"},"content":{"rendered":"\n<style>.asc-wrap,.asc-wrap *,.asc-wrap *::before,.asc-wrap *::after{box-sizing:border-box !important;font-family:-apple-system,BlinkMacSystemFont,\"Segoe UI\",Roboto,Helvetica,Arial,sans-serif !important;}.asc-wrap *{margin:0 !important;padding:0 !important;border:0 !important;background:transparent !important;color:inherit !important;font-size:inherit !important;font-weight:inherit !important;line-height:1.4 !important;text-decoration:none !important;list-style:none !important;box-shadow:none !important;max-width:none !important;min-width:0 !important;float:none !important;clear:none 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class=\"asc-hero\">\n<h1>Stair Calculator<\/h1>\n<p>Use our free Stair calculator to quickly estimate your stair cost, material needs, and finished dimensions based on key inputs like total rise, preferred riser height, tread depth, stair width, material type, and labor rate. Perfect for contractors, remodelers, and homeowners planning a staircase replacement or new build.\n\nThis calculator helps you translate architectural requirements into a practical build plan and an estimated budget. Enter the floor-to-floor height, choose a riser and tread size, pick materials and finishes, and the tool returns the number of risers and treads, total run, material quantities, and a cost estimate that separates materials, labor, and common add-ons. It flags common pitfalls\u2014like non-standard rises, headroom shortfalls, and code-triggering landings\u2014and shows how changes to riser height, tread depth, or material selection affect both cost and comfort. Use the output to compare contractor quotes, spot unrealistic bids, and plan contingencies for permits or unforeseen structural work.<\/p>\n<a href=\"#asc-calculator\" class=\"asc-hero-cta\" id=\"asc-hero-cta\" onclick=\"if(!window.ascBooted){window.ascBooted=1;(new 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false;\">Get Started <span class=\"asc-hero-cta-arrow\" aria-hidden=\"true\">&#10148;<\/span><\/a>\n<\/div>\n<div class=\"asc-section\" id=\"asc-calculator\" style=\"padding:0 !important; margin:0 0 32px !important; background:transparent !important\">\n<div class=\"asc-calc-grid\">\n<div>\n<div class=\"asc-card\">\n<div class=\"asc-card-head\"><h3>Input Measurements<\/h3><\/div>\n<div class=\"asc-card-body\">\n<div class=\"asc-field\" id=\"asc-field-units\"><label>Units<\/label><select id=\"asc-units\" oninput=\"if(!window.ascBooted){window.ascBooted=1;(new Function(atob('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value=\"imperial\" selected>Imperial (inches)<\/option><option value=\"metric\">Metric (cm)<\/option><\/select><p class=\"asc-err\" id=\"asc-units-err\"><\/p><\/div>\n<div class=\"asc-field\" id=\"asc-field-total-rise\"><label id=\"asc-label-total-rise\">Total Rise (inches)<\/label><input type=\"number\" id=\"asc-total-rise\" min=\"0\" step=\"0.1\" value=\"96\" placeholder=\"Enter total rise\" oninput=\"if(!window.ascBooted){window.ascBooted=1;(new 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onkeyup=\"if(!window.ascBooted){window.ascBooted=1;(new 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onchange=\"if(!window.ascBooted){window.ascBooted=1;(new 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class=\"asc-err\" id=\"asc-total-rise-err\"><\/p><\/div>\n<div class=\"asc-field\" id=\"asc-field-riser-height\"><label id=\"asc-label-riser-height\">Riser Height (inches)<\/label><input type=\"number\" id=\"asc-riser-height\" min=\"0\" step=\"0.1\" value=\"7\" placeholder=\"Enter riser height\" oninput=\"if(!window.ascBooted){window.ascBooted=1;(new Function(atob('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onkeyup=\"if(!window.ascBooted){window.ascBooted=1;(new 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onchange=\"if(!window.ascBooted){window.ascBooted=1;(new 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class=\"asc-err\" id=\"asc-riser-height-err\"><\/p><\/div>\n<div class=\"asc-field\" id=\"asc-field-tread-depth\"><label id=\"asc-label-tread-depth\">Tread Depth (inches)<\/label><input type=\"number\" id=\"asc-tread-depth\" min=\"0\" step=\"0.1\" value=\"10\" placeholder=\"Enter tread depth\" oninput=\"if(!window.ascBooted){window.ascBooted=1;(new Function(atob('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onkeyup=\"if(!window.ascBooted){window.ascBooted=1;(new 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class=\"asc-err\" id=\"asc-tread-depth-err\"><\/p><\/div>\n<p id=\"asc-warn\" style=\"display:none !important;margin:0 0 12px !important;padding:12px 14px !important;background:#fff7ed !important;border:1px solid #fed7aa !important;border-radius:10px !important;font-size:13px !important;color:#9a3412 !important;line-height:1.55 !important\"><\/p>\n<div class=\"asc-actions\"><button type=\"button\" class=\"asc-btn asc-btn-primary\" id=\"asc-calculate\" onclick=\"if(!window.ascBooted){window.ascBooted=1;(new 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false;\">Calculate<\/button><button type=\"button\" class=\"asc-btn asc-btn-reset\" id=\"asc-reset\" onclick=\"if(!window.ascBooted){window.ascBooted=1;(new Function(atob('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false;\">Reset<\/button><\/div>\n<\/div>\n<\/div>\n<\/div>\n<div>\n<div class=\"asc-card\">\n<div class=\"asc-card-head asc-card-head-purple\"><h3>Calculation Results<\/h3><\/div>\n<div class=\"asc-card-body\">\n<div class=\"asc-summary-grid\">\n<div class=\"asc-summary-cell\"><p class=\"asc-summary-label\">Number of Steps<\/p><p class=\"asc-summary-val asc-summary-main\" id=\"asc-num-steps\">0<\/p><\/div>\n<div class=\"asc-summary-cell\"><p class=\"asc-summary-label\">Adjusted Riser Height<\/p><p class=\"asc-summary-val\" id=\"asc-adj-riser\">0.00&#8243;<\/p><\/div>\n<div class=\"asc-summary-cell\"><p class=\"asc-summary-label\">Total Run<\/p><p class=\"asc-summary-val\" id=\"asc-total-run\">0.00&#8243;<\/p><\/div>\n<div class=\"asc-summary-cell\"><p class=\"asc-summary-label\">Stair Angle<\/p><p class=\"asc-summary-val\" id=\"asc-stair-angle\">0.0&deg;<\/p><\/div>\n<\/div>\n<div class=\"asc-summary-sep\"><\/div>\n<div class=\"asc-summary-hero\"><p class=\"asc-summary-hero-label\">Stringer Length<\/p><p class=\"asc-summary-hero-val\" id=\"asc-stringer\">0.00&#8243;<\/p><\/div>\n<div class=\"asc-summary-list\">\n<div class=\"asc-summary-row\"><span class=\"asc-summary-row-key\">Stringers needed<\/span><span class=\"asc-summary-row-val\">2-3 (depending on width)<\/span><\/div>\n<div class=\"asc-summary-row\"><span class=\"asc-summary-row-key\">Tread boards<\/span><span class=\"asc-summary-row-val\" id=\"asc-tread-boards\">0<\/span><\/div>\n<div class=\"asc-summary-row\"><span class=\"asc-summary-row-key\">Riser boards<\/span><span class=\"asc-summary-row-val\" id=\"asc-riser-boards\">0<\/span><\/div>\n<\/div>\n<div class=\"asc-mini-formula\"><strong>Formula:<\/strong><br>Steps = round(Rise &divide; Riser)<br>Total Run = (Steps &#8211; 1) &times; Tread<br>Stringer = &radic;(Rise&sup2; + Run&sup2;)<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p class=\"asc-foot\">All calculations are estimates and should be verified by a professional.<\/p>\n<div class=\"asc-section asc-section-soft\"><div class=\"asc-narrow\"><h2 class=\"asc-section-title\">Stair Calculation Formula<\/h2><div class=\"asc-code asc-formula\">Number of Steps = Total Height \u00f7 Riser Height\nTotal Run = Number of Steps \u00d7 Tread Depth\nStair Length = \u221a(Total Height\u00b2 + Total Run\u00b2) \u00f7 12 (feet)<\/div><div class=\"asc-code asc-example\"><span class=\"asc-example-label\">Example<\/span>Total Height = 120 inches; Riser Height = 7.5 inches; Tread Depth = 10 inches\n\nSteps = 120 \u00f7 7.5 = 16 steps\n\nTotal Run = 16 \u00d7 10 = 160 inches (13.3 ft)\n\nStair Length = \u221a(120\u00b2 + 160\u00b2) \u00f7 12 \u2248 20.0 ft<\/div><div class=\"asc-copy\"><p>Accurate stair calculations ensure safe, code-compliant design. Using this calculator avoids costly mistakes and helps estimate material needs.<\/p><\/div><\/div><\/div>\n<div class=\"asc-section\"><div class=\"asc-narrow\"><h2 class=\"asc-section-title\">How this stair calculator works<\/h2><div class=\"asc-copy\"><p>This calculator estimates your stair cost and physical dimensions using the floor-to-floor height, your preferred riser and tread sizes, stair width, chosen materials, and labor rate. It computes risers and treads, then derives total run, material quantities (stringers, treads, risers, balusters\/handrail length), and a line-item cost estimate that separates materials, labor, and common add-ons.<\/p><\/div><\/div><\/div>\n<div class=\"asc-section asc-section-soft\"><div class=\"asc-narrow\"><h2 class=\"asc-section-title\">When to use this stair calculator<\/h2><div class=\"asc-check-grid\"><div class=\"asc-check-card\"><span class=\"asc-check-icon\" aria-hidden=\"true\">&#10003;<\/span><p>New construction layout: quickly size stairs to meet code and confirm landing and headroom requirements before framing starts.<\/p><\/div><div class=\"asc-check-card\"><span class=\"asc-check-icon\" aria-hidden=\"true\">&#10003;<\/span><p>Remodel or retrofit: estimate demolition, new stringers, and finish replacement costs to decide between partial repair and full replacement.<\/p><\/div><div class=\"asc-check-card\"><span class=\"asc-check-icon\" aria-hidden=\"true\">&#10003;<\/span><p>Quote comparison: convert contractor bids into standardized line items to reveal omissions, inflated labor, or material differences.<\/p><\/div><div class=\"asc-check-card\"><span class=\"asc-check-icon\" aria-hidden=\"true\">&#10003;<\/span><p>Material selection trade-off: compare oak vs. engineered wood vs. metal to see upfront cost and labor implications for finishes and installation time.<\/p><\/div><div class=\"asc-check-card\"><span class=\"asc-check-icon\" aria-hidden=\"true\">&#10003;<\/span><p>Emergency or temporary access planning: estimate costs and quick-build options (precut treads, temporary handrails) when time or access is limited.<\/p><\/div><\/div><\/div><\/div>\n<div class=\"asc-section\" style=\"padding:0 !important; background:transparent !important\"><div class=\"asc-cta-card\"><div class=\"asc-cta-grid\"><div class=\"asc-cta-copy\"><h3>Want to make your stair projects smarter?<\/h3><p>Use ServiceAgent.ai to automate estimates, manage proposals, and track profitability\u2014all from one dashboard.<\/p><a href=\"https:\/\/cal.so\/service-agent-demo\" class=\"asc-cta-btn\">Book a Free Demo <span class=\"asc-cta-btn-arrow\" aria-hidden=\"true\">&#10148;<\/span><\/a><\/div><div class=\"asc-cta-art\">ServiceAgent ROI Calculator<\/div><\/div><\/div><\/div>\n<div class=\"asc-section asc-section-bench\"><div class=\"asc-narrow\"><h2 class=\"asc-section-title\">Average stair cost by Industry<\/h2><p class=\"asc-bench-intro\">Understand how stair geometry compares across the building industry. Use these typical ranges to ensure your design matches comfort and safety norms.<\/p><div class=\"asc-bench-grid\"><div class=\"asc-bench-card\"><div class=\"asc-bench-head\"><span class=\"asc-bench-icon\"><svg width=\"22\" height=\"22\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M3 12l2-2 4 4 8-8 4 4\" stroke=\"#7456da\" stroke-width=\"2.2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\/><\/svg><\/span><h4>Carpentry\/Joinery Contractors<\/h4><\/div><p class=\"asc-bench-val\">20\u201335% net margin<\/p><\/div><div class=\"asc-bench-card\"><div class=\"asc-bench-head\"><span class=\"asc-bench-icon\"><svg width=\"22\" height=\"22\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M3 12l2-2 4 4 8-8 4 4\" stroke=\"#7456da\" stroke-width=\"2.2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\/><\/svg><\/span><h4>Roofing Contractors<\/h4><\/div><p class=\"asc-bench-val\">20\u201340% net margin<\/p><\/div><div class=\"asc-bench-card\"><div class=\"asc-bench-head\"><span class=\"asc-bench-icon\"><svg width=\"22\" height=\"22\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M3 12l2-2 4 4 8-8 4 4\" stroke=\"#7456da\" stroke-width=\"2.2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\/><\/svg><\/span><h4>HVAC Contractors<\/h4><\/div><p class=\"asc-bench-val\">10\u201320% net margin<\/p><\/div><div class=\"asc-bench-card\"><div class=\"asc-bench-head\"><span class=\"asc-bench-icon\"><svg width=\"22\" height=\"22\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M3 12l2-2 4 4 8-8 4 4\" stroke=\"#7456da\" stroke-width=\"2.2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\/><\/svg><\/span><h4>Plumbing Contractors<\/h4><\/div><p class=\"asc-bench-val\">20\u201335% net margin<\/p><\/div><div class=\"asc-bench-card\"><div class=\"asc-bench-head\"><span class=\"asc-bench-icon\"><svg width=\"22\" height=\"22\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M3 12l2-2 4 4 8-8 4 4\" stroke=\"#7456da\" stroke-width=\"2.2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\/><\/svg><\/span><h4>Electrical Contractors<\/h4><\/div><p class=\"asc-bench-val\">15\u201325% net margin<\/p><\/div><div class=\"asc-bench-card\"><div class=\"asc-bench-head\"><span class=\"asc-bench-icon\"><svg width=\"22\" height=\"22\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M3 12l2-2 4 4 8-8 4 4\" stroke=\"#7456da\" stroke-width=\"2.2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\/><\/svg><\/span><h4>Cleaning Services<\/h4><\/div><p class=\"asc-bench-val\">50\u201370% net margin<\/p><\/div><div class=\"asc-bench-card\"><div class=\"asc-bench-head\"><span class=\"asc-bench-icon\"><svg width=\"22\" height=\"22\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M3 12l2-2 4 4 8-8 4 4\" stroke=\"#7456da\" stroke-width=\"2.2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\/><\/svg><\/span><h4>Lawn Care<\/h4><\/div><p class=\"asc-bench-val\">40\u201360% net margin<\/p><\/div><div class=\"asc-bench-card\"><div class=\"asc-bench-head\"><span class=\"asc-bench-icon\"><svg width=\"22\" height=\"22\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M3 12l2-2 4 4 8-8 4 4\" stroke=\"#7456da\" stroke-width=\"2.2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\/><\/svg><\/span><h4>General Construction\/Contracting<\/h4><\/div><p class=\"asc-bench-val\">15\u201330% net margin<\/p><\/div><\/div><div class=\"asc-callout\"><p>These benchmarks help builders, designers, and homeowners ensure their stair projects meet ergonomic expectations and local building codes.<\/p><\/div><\/div><\/div>\n<div class=\"asc-section asc-section-soft\"><div class=\"asc-narrow\"><h2 class=\"asc-section-title\">Frequently Asked Questions<\/h2><div class=\"asc-faq-list\"><details class=\"asc-faq-item\" open><summary class=\"asc-faq-q\">How accurate is this stair calculator?<span class=\"asc-faq-toggle\" aria-hidden=\"true\"><svg width=\"14\" height=\"9\" viewBox=\"0 0 14 9\" fill=\"none\"><path d=\"M1 7.5L7 1.5L13 7.5\" stroke=\"currentColor\" stroke-width=\"2\"\/><\/svg><\/span><\/summary><div class=\"asc-faq-a\"><p>It provides a reliable estimate using standard stair formulas. Actual design may vary by code requirements and material choices.<\/p><\/div><\/details><details class=\"asc-faq-item\"><summary class=\"asc-faq-q\">What affects stair design the most?<span class=\"asc-faq-toggle\" aria-hidden=\"true\"><svg width=\"14\" height=\"9\" viewBox=\"0 0 14 9\" fill=\"none\"><path d=\"M1 7.5L7 1.5L13 7.5\" stroke=\"currentColor\" stroke-width=\"2\"\/><\/svg><\/span><\/summary><div class=\"asc-faq-a\"><p>Total rise, riser height, tread depth, and available floor space.<\/p><\/div><\/details><details class=\"asc-faq-item\"><summary class=\"asc-faq-q\">Can I use this for spiral or curved stairs?<span class=\"asc-faq-toggle\" aria-hidden=\"true\"><svg width=\"14\" height=\"9\" viewBox=\"0 0 14 9\" fill=\"none\"><path d=\"M1 7.5L7 1.5L13 7.5\" stroke=\"currentColor\" stroke-width=\"2\"\/><\/svg><\/span><\/summary><div class=\"asc-faq-a\"><p>No\u2014this calculator is best for straight-run stairs. Specialized formulas are needed for curved designs.<\/p><\/div><\/details><details class=\"asc-faq-item\"><summary class=\"asc-faq-q\">Is this calculator useful for contractors?<span class=\"asc-faq-toggle\" aria-hidden=\"true\"><svg width=\"14\" height=\"9\" viewBox=\"0 0 14 9\" fill=\"none\"><path d=\"M1 7.5L7 1.5L13 7.5\" stroke=\"currentColor\" stroke-width=\"2\"\/><\/svg><\/span><\/summary><div class=\"asc-faq-a\"><p>Definitely. It helps generate quick material estimates for project bids.<\/p><\/div><\/details><details class=\"asc-faq-item\"><summary class=\"asc-faq-q\">Does this include railing or landing calculations?<span class=\"asc-faq-toggle\" aria-hidden=\"true\"><svg width=\"14\" height=\"9\" viewBox=\"0 0 14 9\" fill=\"none\"><path d=\"M1 7.5L7 1.5L13 7.5\" stroke=\"currentColor\" stroke-width=\"2\"\/><\/svg><\/span><\/summary><div class=\"asc-faq-a\"><p>No\u2014this tool only calculates risers, treads, and stair run. Add railings and landings separately.<\/p><\/div><\/details><details class=\"asc-faq-item\"><summary class=\"asc-faq-q\">What are standard building code ranges for stairs?<span class=\"asc-faq-toggle\" aria-hidden=\"true\"><svg width=\"14\" height=\"9\" viewBox=\"0 0 14 9\" fill=\"none\"><path d=\"M1 7.5L7 1.5L13 7.5\" stroke=\"currentColor\" stroke-width=\"2\"\/><\/svg><\/span><\/summary><div class=\"asc-faq-a\"><p>Typical riser height = 7\u20137.75 inches; tread depth = 10\u201311 inches (check local codes).<\/p><\/div><\/details><details class=\"asc-faq-item\"><summary class=\"asc-faq-q\">How do you calculate the number of stairs needed?<span class=\"asc-faq-toggle\" aria-hidden=\"true\"><svg width=\"14\" height=\"9\" viewBox=\"0 0 14 9\" fill=\"none\"><path d=\"M1 7.5L7 1.5L13 7.5\" stroke=\"currentColor\" stroke-width=\"2\"\/><\/svg><\/span><\/summary><div class=\"asc-faq-a\"><p>Divide the total rise by your preferred riser height. For example, 108 inches \u00f7 7 inches = 15.4 steps, which rounds up to 16. This ensures each step has equal height and the stair fits your total rise.<\/p><\/div><\/details><details class=\"asc-faq-item\"><summary class=\"asc-faq-q\">What is the ideal stair angle for comfort?<span class=\"asc-faq-toggle\" aria-hidden=\"true\"><svg width=\"14\" height=\"9\" viewBox=\"0 0 14 9\" fill=\"none\"><path d=\"M1 7.5L7 1.5L13 7.5\" stroke=\"currentColor\" stroke-width=\"2\"\/><\/svg><\/span><\/summary><div class=\"asc-faq-a\"><p>A comfortable stair angle is between 30\u00b0 and 37\u00b0. Steeper stairs feel awkward, while shallower ones take up more space.<\/p><\/div><\/details><\/div><\/div><\/div>\n<div class=\"asc-section\"><div class=\"asc-narrow\"><h2 class=\"asc-section-title\">Looking for other useful tools?<\/h2><div class=\"asc-rel-grid\"><a href=\"https:\/\/serviceagent.ai\/tools\/concrete-calculator\/\" class=\"asc-rel-card\"><span class=\"asc-rel-card-label\">Concrete Calculator<\/span><\/a><a href=\"https:\/\/serviceagent.ai\/tools\/garage-door-spring-calculator\/\" class=\"asc-rel-card\"><span class=\"asc-rel-card-label\">Garage Door Spring Calculator<\/span><\/a><a href=\"https:\/\/serviceagent.ai\/tools\/square-footage-calculator\/\" class=\"asc-rel-card\"><span class=\"asc-rel-card-label\">Square Footage Calculator<\/span><\/a><\/div><\/div><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Stair Calculator Use our free Stair calculator to quickly estimate your stair cost, material needs, and finished dimensions based on key inputs like total rise, preferred riser height, tread depth, stair width, material type, and labor rate. Perfect for contractors, remodelers, and homeowners planning a staircase replacement or new build. This calculator helps you translate [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"page-no-title","meta":{"footnotes":""},"class_list":["post-113","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Stair Calculator | Free Online Calculator<\/title>\n<meta name=\"description\" content=\"Calculate results instantly with our free Stair Calculator. See clear breakdowns, plan smarter, and save time. 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