{"id":59958,"date":"2016-12-29T10:58:13","date_gmt":"2016-12-29T08:58:13","guid":{"rendered":"https:\/\/wpcalc.com\/?p=59958"},"modified":"2026-09-30T18:10:30","modified_gmt":"2026-09-30T15:10:30","slug":"concrete-column-fill","status":"publish","type":"post","link":"https:\/\/wpcalc.com\/en\/engineering\/concrete-column-fill\/","title":{"rendered":"Concrete Column Fill Calculator"},"content":{"rendered":"<section class=\"not-prose calculator-box\" aria-labelledby=\"calculator-title\"><div class=\"flex items-baseline sm:items-center justify-between gap-2 sm:gap-3\"><div class=\"flex flex-col sm:flex-row sm:items-center gap-2\"><span class=\"icon icon-calculator text-primary-700! text-base! dark:text-primary-300!\" aria-hidden=\"true\"><\/span><h2 id=\"calculator-title\" class=\"text-lg font-display font-bold\">Estimate Concrete for Round Column Fill<\/h2><\/div><div class=\"calcdash-favorite group\">\n  <button type=\"button\" class=\"favorite\" id=\"favorite\" data-favorite-id=\"59958\" data-favorite-title=\"Concrete Column Fill\" data-favorite-url=\"https:\/\/wpcalc.com\/en\/engineering\/concrete-column-fill\/\" data-favorite-excerpt=\"Estimate the concrete needed to fill a round column in cubic yards. Enter the diameter in inches and the height in feet \u2014 useful for piers, form tubes and structural columns.\" aria-label=\"Add to Favorites\" data-favorite-icon=\"icon icon-engineering\">\n    <span class=\"icon icon-shape-star-empty\" aria-hidden=\"true\"><\/span>\n  <\/button>\n  <div class=\"calcdash-favorite__tip\" aria-hidden=\"true\">\n   <span class=\"favorite-tooltip\" id=\"favorite-tooltip\"><\/span>\n  <\/div>\n  <span class=\"sr-only\" role=\"status\" id=\"favorite-status\"><\/span>\n<\/div><\/div><form action=\"https:\/\/wpcalc.com\/en\/engineering\/concrete-column-fill\/\" method=\"POST\" class=\"calculator\" id=\"calculator-59958\" data-post=\"59958\"><fieldset class=\"fieldset-input\"><legend class=\"sr-only\">Input Fields<\/legend><div class=\"field has-term\" id=\"input-1\"><label for=\"field-1\">Height \/ Depth<\/label><div class=\"term\">h<\/div>  <div class=\"absolute bottom-0 left-16 top-8 w-2 h-0.5 bg-blue-500\"><\/div><input type=\"number\" name=\"height_depth\" id=\"field-1\" aria-describedby=\"calc-unit-1\" step=\"0.01\" value=\"48\"\/><div class=\"unit\" id=\"calc-unit-1\">in<\/div><\/div><div class=\"field has-term\" id=\"input-2\"><label for=\"field-2\">Diameter<\/label><div class=\"term\">d<\/div>  <div class=\"absolute bottom-0 left-16 top-8 w-2 h-0.5 bg-blue-500\"><\/div><input type=\"number\" name=\"diameter\" id=\"field-2\" aria-describedby=\"calc-unit-2\" step=\"0.01\" value=\"12\"\/><div class=\"unit\" id=\"calc-unit-2\">in<\/div><\/div><\/fieldset><div class=\"buttons\"><button type=\"submit\" data-text=\"Re-Calculate\" id=\"calculate-button\" data-post=\"59958\">Calculate<\/button><button type=\"reset\">Reset<\/button><\/div><div class=\"field is-checkbox hidden!\" id=\"field-auto-calc\"><input type=\"checkbox\" id=\"auto-calc\"><label for=\"auto-calc\">Calculate automatically<\/label><small>If enabled, the result will update automatically when you change any value.<\/small><\/div><div class=\"fieldset-result is-hidden\" aria-labelledby=\"result-title\" aria-live=\"polite\" role=\"region\"> <h3 class=\"result-title bg-gradient-to-r from-primary-50 to-gray-50 dark:from-primary-900 dark:to-gray-800\" id=\"result-title\"><span class=\"icon icon-s-pulse\" aria-hidden=\"true\"><\/span> Your Results<\/h3><div class=\"result-box\"><div class=\"field-result\" id=\"output-1\"><span class=\"field-title\"><span>Cubic yards<\/span><span class=\"result-term\">V<\/span><\/span><span class=\"field-value\" id=\"result-1\" data-unit=\"yd\u00b3\"><\/span><button type=\"button\" class=\"copy-result\" data-tooltip=\"Copy Result\" aria-label=\"Copy Result\"><span class=\"copy-icon icon icon-document-copy\" aria-hidden=\"true\"><\/span><\/button><\/div><\/div><div class=\"result-actions\"><button type=\"button\" class=\"copy-link\"><svg viewBox=\"0 0 20 20\" fill=\"currentColor\" aria-hidden=\"true\"><path d=\"M12.232 4.232a2.5 2.5 0 0 1 3.536 3.536l-1.225 1.224a.75.75 0 0 0 1.061 1.06l1.224-1.224a4 4 0 0 0-5.656-5.656l-3 3a4 4 0 0 0 .225 5.865.75.75 0 0 0 .977-1.138 2.5 2.5 0 0 1-.142-3.667l3-3Z\"\/><path d=\"M11.603 7.963a.75.75 0 0 0-.977 1.138 2.5 2.5 0 0 1 .142 3.667l-3 3a2.5 2.5 0 0 1-3.536-3.536l1.225-1.224a.75.75 0 0 0-1.061-1.06l-1.224 1.224a4 4 0 1 0 5.656 5.656l3-3a4 4 0 0 0-.225-5.865Z\"\/><\/svg><span class=\"copy-link__text\">Copy link to this calculation<\/span><\/button><span class=\"sr-only\" role=\"status\" id=\"copy-link-status\"><\/span><\/div><\/div><a href=\"#respond\" class=\"hidden transition-opacity duration-300 opacity-0 w-50 text-sm justify-center items-center gap-2 px-4 py-2 rounded bg-gray-200 text-gray-700 hover:bg-gray-300\" id=\"leave-comment\"><span class=\"icon icon-comments\" aria-hidden=\"true\"><\/span>Leave a Comment<\/a><\/form><\/section><section id=\"calc-reactions\" class=\"not-prose hidden my-12 bg-gradient-to-r from-primary-50 to-gray-50 border border-indigo-100 rounded-xl px-6 py-4 shadow-sm\" data-post=\"59958\" aria-live=\"polite\" aria-labelledby=\"calc-reactions-title\"><p id=\"calc-reactions-title\" class=\"text-sm text-gray-500 text-center mb-2\">How did this result make you feel?<\/p><div role=\"group\" aria-labelledby=\"calc-reactions-title\" class=\"grid grid-cols-3 sm:flex sm:flex-row sm:justify-around gap-4 sm:items-center sm:flex-wrap\"><button type=\"button\" aria-pressed=\"false\" class=\"reaction-btn flex flex-col items-center gap-1 text-sm text-gray-700 hover:text-primary-600 cursor-pointer transition-transform hover:scale-105\" data-reaction=\"like\"><span class=\"reaction-count\" data-reaction-count=\"like\">0<\/span><span class=\"reaction text-3xl\" aria-hidden=\"true\">\ud83d\ude00 <\/span><span class=\"reaction-description font-medium\">Like <\/span><\/button><button type=\"button\" aria-pressed=\"false\" class=\"reaction-btn flex flex-col items-center gap-1 text-sm text-gray-700 hover:text-primary-600 cursor-pointer transition-transform hover:scale-105\" data-reaction=\"helpful\"><span class=\"reaction-count\" data-reaction-count=\"helpful\">0<\/span><span class=\"reaction text-3xl\" aria-hidden=\"true\">\ud83d\udca1 <\/span><span class=\"reaction-description font-medium\">Helpful <\/span><\/button><button type=\"button\" aria-pressed=\"false\" class=\"reaction-btn flex flex-col items-center gap-1 text-sm text-gray-700 hover:text-primary-600 cursor-pointer transition-transform hover:scale-105\" data-reaction=\"confused\"><span class=\"reaction-count\" data-reaction-count=\"confused\">0<\/span><span class=\"reaction text-3xl\" aria-hidden=\"true\">\ud83d\ude15 <\/span><span class=\"reaction-description font-medium\">Confused <\/span><\/button><button type=\"button\" aria-pressed=\"false\" class=\"reaction-btn flex flex-col items-center gap-1 text-sm text-gray-700 hover:text-primary-600 cursor-pointer transition-transform hover:scale-105\" data-reaction=\"disappointed\"><span class=\"reaction-count\" data-reaction-count=\"disappointed\">0<\/span><span class=\"reaction text-3xl\" aria-hidden=\"true\">\ud83d\ude1e <\/span><span class=\"reaction-description font-medium\">Disappointed <\/span><\/button><button type=\"button\" aria-pressed=\"false\" class=\"reaction-btn flex flex-col items-center gap-1 text-sm text-gray-700 hover:text-primary-600 cursor-pointer transition-transform hover:scale-105\" data-reaction=\"inaccurate\"><span class=\"reaction-count\" data-reaction-count=\"inaccurate\">1<\/span><span class=\"reaction text-3xl\" aria-hidden=\"true\">\u274c <\/span><span class=\"reaction-description font-medium\">Inaccurate <\/span><\/button><\/div><div id=\"reaction-message\" class=\"hidden mt-8 rounded-md border border-primary-100 bg-white\/50 backdrop-blur-sm px-4 py-2 text-sm text-center shadow-sm\"><\/div><\/section><div class=\"calcdash-ad not-prose calcdash-ad--calc_result calcdash-ad--in-article\"><ins class=\"adsbygoogle\" style=\"display:block\" data-ad-client=\"ca-pub-1721569815777345\" data-ad-slot=\"6317458308\" data-ad-layout=\"in-article\" data-ad-format=\"fluid\"><\/ins><script>(adsbygoogle = window.adsbygoogle || []).push({});<\/script><\/div>\n<style id=\"wpcoderpro-inline-1\">.formula-box {\r\n\tborder-bottom: none !important;\r\n}<\/style><section class=\"formula-box\" aria-labelledby=\"formula-title\">\r\n\t<div id=\"formula-title\" class=\"not-prose font-display mb-4\"><span class=\"icon icon-formula\" aria-hidden=\"true\"><\/span><h2>Concrete Column Fill Formula<\/h2><\/div>\r\n\t<figure class=\"not-prose formula\">\r\n\t\t<figcaption class=\"formula-title\">Formula<\/figcaption>\r\n\t\t<div class=\"text-base text-gray-800\" id=\"formula\">\n\\[ r = \\frac{d}{24} \\\\ V = \\frac{h \\cdot r^{2} \\cdot \\frac{22}{7}}{27} \\]\n<\/div>\r\n\t<\/figure>\r\n\t<\/p>\n<p><strong>Where:<\/strong><\/p>\n<ul>\n<li>\\(d\\) \u2014 diameter of the column, in inches<\/li>\n<li>\\(r\\) \u2014 radius of the column, in feet (dividing the diameter by 24 converts inches to feet and halves it)<\/li>\n<li>\\(h\\) \u2014 height (depth) of the column, in feet<\/li>\n<li>\\(\\frac{22}{7}\\) \u2014 approximation of \\(\\pi\\)<\/li>\n<li>\\(27\\) \u2014 number of cubic feet in one cubic yard<\/li>\n<\/ul>\n<p>This is the standard cylinder volume formula \\(V = \\pi r^{2} h\\), with the diameter converted from inches to a radius in feet and the answer converted from cubic feet to cubic yards.<\/p>\n<p>\r\n<\/section>\n<style id=\"wpcoderpro-inline-459\">.calculation-box {\r\n\tborder-bottom: none !important;\r\n}<\/style><section id=\"calculation\" class=\"calculation-box\" aria-labelledby=\"calculation-title\">\r\n\t<div id=\"calculation-title\" class=\"not-prose font-display\"><span class=\"icon icon-unordered-list\" aria-hidden=\"true\"><\/span><h2>Concrete Column Fill \u2013 Calculation Example<\/h2><\/div>\r\n\r\n<\/p>\n<p><strong>Example:<\/strong> a round form tube 12 inches in diameter and 4 feet tall must be filled with concrete. Enter Height \/ Depth = 4 and Diameter = 12.<\/p>\n<p>\\[ r = \\frac{12}{24} = 0.5 \\text{ ft} \\]<\/p>\n<p>\\[ V = \\frac{4 \\times 0.5^{2} \\times \\frac{22}{7}}{27} = \\frac{3.1429}{27} \\approx 0.1164 \\text{ yd}^{3} \\]<\/p>\n<p><strong>Result:<\/strong> about 0.12 cubic yards of concrete for one column.<\/p>\n<p>\n\r\n<\/section>\n<h2>How to Use the Calculator<\/h2>\n<ol>\n<li>Measure the height (or depth) of the column in feet and enter it in the <strong>Height \/ Depth<\/strong> field.<\/li>\n<li>Measure the inside diameter of the column or form tube in inches and enter it in the <strong>Diameter<\/strong> field.<\/li>\n<li>Read the result in the <strong>Cubic yards<\/strong> field \u2014 this is the concrete needed to fill one column.<\/li>\n<li>For several identical columns, multiply the result by the number of columns and add a 5\u201310% waste margin before ordering.<\/li>\n<\/ol>\n<h2>What Is Concrete Column Fill?<\/h2>\n<p>Round concrete columns appear in many projects: deck piers, porch columns, pole-barn posts, sign footings and the cylindrical piers that support beams under a house. The concrete is usually poured into cardboard form tubes (often called Sonotubes) or into hollow steel columns, and the amount needed depends on only two dimensions \u2014 the diameter and the height of the cylinder.<\/p>\n<p>Ready-mix concrete is sold by the cubic yard, so estimating the volume in cubic yards lines up directly with how you order it. A single small column is often below a supplier's minimum load \u2014 commonly around one cubic yard \u2014 in which case bagged concrete mix is more practical. An 80 lb bag yields roughly 0.6 ft\u00b3 (about 0.022 yd\u00b3) of concrete, so the 12 in \u00d7 4 ft column in the example above needs a little over five bags; round up to six to allow for waste.<\/p>\n<p>The result is the net volume of the cavity. To turn it into an order, multiply by the number of columns, add the waste margin, and compare with delivery sizes. If you are pouring footings or a slab at the same time, add this result to the estimate from our <a href=\"https:\/\/wpcalc.com\/en\/engineering\/concrete-footing-slab-pours\/\">concrete footing and slab pours calculator<\/a> so the whole job is covered by a single delivery. To check the total for the entire project, the <a href=\"https:\/\/wpcalc.com\/en\/engineering\/concrete-yardage\/\">concrete yardage calculator<\/a> is also handy.<\/p>\n<h2>Concrete Needed per Foot of Column Height<\/h2>\n<p>The table below shows the fill volume of a round column per foot of height, using the same formula as the calculator. Multiply the value by the column height in feet.<\/p>\n<table>\n<thead>\n<tr>\n<th>Diameter (in)<\/th>\n<th>Concrete per foot of height (yd\u00b3)<\/th>\n<th>Concrete per 10 ft column (yd\u00b3)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>8<\/td>\n<td>0.0129<\/td>\n<td>0.13<\/td>\n<\/tr>\n<tr>\n<td>10<\/td>\n<td>0.0202<\/td>\n<td>0.20<\/td>\n<\/tr>\n<tr>\n<td>12<\/td>\n<td>0.0291<\/td>\n<td>0.29<\/td>\n<\/tr>\n<tr>\n<td>16<\/td>\n<td>0.0518<\/td>\n<td>0.52<\/td>\n<\/tr>\n<tr>\n<td>18<\/td>\n<td>0.0655<\/td>\n<td>0.65<\/td>\n<\/tr>\n<tr>\n<td>24<\/td>\n<td>0.1164<\/td>\n<td>1.16<\/td>\n<\/tr>\n<tr>\n<td>30<\/td>\n<td>0.1819<\/td>\n<td>1.82<\/td>\n<\/tr>\n<tr>\n<td>36<\/td>\n<td>0.2619<\/td>\n<td>2.62<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Assumptions, Limitations and Tips<\/h2>\n<ul>\n<li><strong>Height in feet, diameter in inches.<\/strong> The calculator converts the diameter to a radius in feet (\\(d \\div 24\\)) but uses the height value exactly as entered, so enter the height in feet for a correct cubic-yard result. If your height is measured in inches, divide it by 12 before entering it.<\/li>\n<li><strong>Straight, vertical cylinder.<\/strong> The formula assumes a uniform diameter over the full height. Tapered columns or piers with a belled, wider base need the extra footing volume computed separately \u2014 see the <a href=\"https:\/\/wpcalc.com\/en\/engineering\/concrete-footing-yard\/\">concrete footing yardage calculator<\/a>.<\/li>\n<li><strong>Rebar and inserts.<\/strong> Reinforcing bars, anchor bolts and inner posts displace a small amount of concrete, typically 1\u20133% \u2014 usually covered by the waste margin.<\/li>\n<li><strong>Approximate \u03c0.<\/strong> The calculator uses 22\/7 for \\(\\pi\\), which differs from the true value by less than 0.04% \u2014 negligible for ordering purposes.<\/li>\n<li><strong>Order extra.<\/strong> Add 5\u201310% for spillage, an uneven excavation bottom and variations in mixing; a ready-mix supplier generally cannot deliver a small top-up load.<\/li>\n<li><strong>Round columns only.<\/strong> For rectangular columns or walls, use the <a href=\"https:\/\/wpcalc.com\/en\/engineering\/concrete-wall\/\">concrete wall calculator<\/a> instead.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Estimate the concrete needed to fill a round column in cubic yards. Enter the diameter in inches and the height in feet \u2014 useful for piers, form tubes and structural columns.<\/p>\n","protected":false},"author":70,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[4],"tags":[96],"class_list":["post-59958","post","type-post","status-publish","format-standard","hentry","category-engineering","tag-concrete"],"acf":[],"_links":{"self":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/59958","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/users\/70"}],"replies":[{"embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/comments?post=59958"}],"version-history":[{"count":3,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/59958\/revisions"}],"predecessor-version":[{"id":65955,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/59958\/revisions\/65955"}],"wp:attachment":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/media?parent=59958"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/categories?post=59958"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/tags?post=59958"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}