{"id":55779,"date":"2015-10-08T14:12:01","date_gmt":"2015-10-08T12:12:01","guid":{"rendered":"http:\/\/wpcalc.com\/?p=55779"},"modified":"2026-09-28T09:25:00","modified_gmt":"2026-09-28T06:25:00","slug":"length","status":"publish","type":"post","link":"https:\/\/wpcalc.com\/en\/converters\/length\/","title":{"rendered":"Length Universal Converter"},"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\">Universal Length &amp; Distance Converter<\/h2><\/div><div class=\"calcdash-favorite group\">\n  <button type=\"button\" class=\"favorite\" id=\"favorite\" data-favorite-id=\"55779\" data-favorite-title=\"Length Universal Converter\" data-favorite-url=\"https:\/\/wpcalc.com\/en\/converters\/length\/\" data-favorite-excerpt=\"Convert a length or distance between meters, centimeters, millimeters, kilometers, inches, feet, yards, miles, and nautical miles. Enter a value, then choose the From unit and To unit.\" aria-label=\"Add to Favorites\" data-favorite-icon=\"icon icon-length\">\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\/converters\/length\/\" method=\"POST\" class=\"calculator\" id=\"calculator-55779\" data-post=\"55779\"><fieldset class=\"fieldset-input\"><legend class=\"sr-only\">Input Fields<\/legend><div class=\"field is-single has-term\" id=\"input-1\"><label for=\"field-1\">Length value<\/label><div class=\"term\">V<\/div>  <div class=\"absolute bottom-0 left-16 top-8 w-2 h-0.5 bg-blue-500\"><\/div><input type=\"text\" name=\"length_value\" id=\"field-1\" aria-describedby=\"calc-info-1\" data-number inputmode=\"decimal\" autocomplete=\"off\" spellcheck=\"false\" min=\"0\" value=\"1\"\/><small id=\"calc-info-1\">Enter the length value you want to convert<\/small><\/div><div class=\"field\" id=\"input-2\"><label for=\"field-2\">From unit<\/label><div class=\"grid grid-cols-1\"><select id=\"field-2\" name=\"from_unit\"><option value=\"m\">Meter (m)<\/option><option value=\"cm\">Centimeter (cm)<\/option><option value=\"mm\">Millimeter (mm)<\/option><option value=\"km\">Kilometer (km)<\/option><option value=\"in\">Inch (in)<\/option><option value=\"ft\">Foot (ft)<\/option><option value=\"yd\">Yard (yd)<\/option><option value=\"mi\">Mile (mi)<\/option><option value=\"nm\">Nautical mile (nm)<\/option><\/select><svg class=\"pointer-events-none col-start-1 row-start-1 mr-2 size-5 self-center justify-self-end text-gray-500 sm:size-4\" viewBox=\"0 0 16 16\" fill=\"currentColor\" aria-hidden=\"true\" data-slot=\"icon\">\n              <path fill-rule=\"evenodd\" d=\"M4.22 6.22a.75.75 0 0 1 1.06 0L8 8.94l2.72-2.72a.75.75 0 1 1 1.06 1.06l-3.25 3.25a.75.75 0 0 1-1.06 0L4.22 7.28a.75.75 0 0 1 0-1.06Z\" clip-rule=\"evenodd\" \/>\n            <\/svg><\/div><\/div><div class=\"field\" id=\"input-3\"><label for=\"field-3\">To unit<\/label><div class=\"grid grid-cols-1\"><select id=\"field-3\" name=\"to_unit\"><option value=\"m\">Meter (m)<\/option><option value=\"cm\">Centimeter (cm)<\/option><option value=\"mm\">Millimeter (mm)<\/option><option value=\"km\">Kilometer (km)<\/option><option value=\"in\">Inch (in)<\/option><option value=\"ft\">Foot (ft)<\/option><option value=\"yd\">Yard (yd)<\/option><option value=\"mi\">Mile (mi)<\/option><option value=\"nm\">Nautical mile (nm)<\/option><\/select><svg class=\"pointer-events-none col-start-1 row-start-1 mr-2 size-5 self-center justify-self-end text-gray-500 sm:size-4\" viewBox=\"0 0 16 16\" fill=\"currentColor\" aria-hidden=\"true\" data-slot=\"icon\">\n              <path fill-rule=\"evenodd\" d=\"M4.22 6.22a.75.75 0 0 1 1.06 0L8 8.94l2.72-2.72a.75.75 0 1 1 1.06 1.06l-3.25 3.25a.75.75 0 0 1-1.06 0L4.22 7.28a.75.75 0 0 1 0-1.06Z\" clip-rule=\"evenodd\" \/>\n            <\/svg><\/div><\/div><\/fieldset><div class=\"buttons\"><button type=\"submit\" data-text=\"Re-Calculate\" id=\"calculate-button\" data-post=\"55779\">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>Converted Length<\/span><\/span><span class=\"field-value\" id=\"result-1\"><\/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=\"55779\" 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\">0<\/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>Length Conversion 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\\[ V_{\\mathrm{to}}=V_{\\mathrm{from}}\\times\\frac{F_{\\mathrm{to}}}{F_{\\mathrm{from}}} \\]\n<\/div>\r\n\t<\/figure>\r\n\t<\/p>\n<p><strong>Where:<\/strong><\/p>\n<ul>\n<li>\\(V_{\\mathrm{from}}\\) \u2014 the length entered in the From unit.<\/li>\n<li>\\(V_{\\mathrm{to}}\\) \u2014 the converted length in the To unit.<\/li>\n<li>\\(F_{\\mathrm{from}}\\) \u2014 the number of From units per meter.<\/li>\n<li>\\(F_{\\mathrm{to}}\\) \u2014 the number of To units per meter.<\/li>\n<\/ul>\n<p>The calculator first divides by the source unit\u2019s units-per-meter factor to obtain meters. It then multiplies by the target unit\u2019s factor to produce the converted length.<\/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>Length Conversion \u2013 Calculation Example<\/h2><\/div>\r\n\r\n<\/p>\n<p><strong>Example:<\/strong> Convert the default value of 1 meter to feet. The calculator uses 1 meter per meter and 3.28084 feet per meter.<\/p>\n<p>\\[ V_{\\mathrm{to}}=1\\,\\mathrm{m}\\times\\frac{3.28084\\,\\mathrm{ft\/m}}{1\\,\\mathrm{m\/m}}=3.28084\\,\\mathrm{ft} \\]<\/p>\n<p><strong>Result:<\/strong> 1 meter is displayed as 3.28084 feet.<\/p>\n<p>\n\r\n<\/section>\n<h2>How to use the calculator<\/h2>\n<ol>\n<li>Enter a nonnegative number in <strong>Length value<\/strong>. Use the amount you want to convert, such as 2.5 for a length of 2.5 units.<\/li>\n<li>Choose the unit of that number in <strong>From unit<\/strong>.<\/li>\n<li>Choose the unit you want in <strong>To unit<\/strong>.<\/li>\n<li>Read <strong>Converted Length<\/strong>. The number is followed by the selected target unit.<\/li>\n<\/ol>\n<p>For example, to convert a measurement taken in inches to centimeters, enter the measured number, set <strong>From unit<\/strong> to Inch (in), and set <strong>To unit<\/strong> to Centimeter (cm). You can select the same unit in both menus to leave the value unchanged. For a dedicated version of the default conversion, see the <a href=\"https:\/\/wpcalc.com\/en\/converters\/meters-to-feet\/\">meters to feet calculator<\/a>.<\/p>\n<h2>What length conversion means<\/h2>\n<p>Length conversion expresses the same physical distance in a different unit. A number changes when its unit changes, but the distance does not: 1 meter and approximately 3.28084 feet describe the same length. This is useful when a drawing, product specification, route, or measurement uses units different from the ones you need.<\/p>\n<p>The available metric units are millimeters, centimeters, meters, and kilometers. The calculator also includes inches, feet, yards, miles, and nautical miles. Nautical miles are commonly used for marine and air navigation; they are not the same length as ordinary miles. Check the unit abbreviation next to the result when working with <strong>mi<\/strong> and <strong>nm<\/strong>.<\/p>\n<p>Every conversion passes through meters. For instance, converting feet to kilometers means first expressing the entered feet as meters and then expressing those meters as kilometers. This method allows the same formula to handle any pair of units in the menus. A length is a one-dimensional measurement, so this result should not be used as an area conversion. If you need to convert the size of a plot rather than the length of one side, use the <a href=\"https:\/\/wpcalc.com\/en\/converters\/land-area\/\">land area unit converter<\/a>.<\/p>\n<h2>Conversion factors used<\/h2>\n<p>The factors below are the numbers of each unit in one meter. They are the values used by this calculator, including its rounded factors for some nonmetric units:<\/p>\n<ul>\n<li><strong>Metric:<\/strong> 1 m, 100 cm, 1,000 mm, or 0.001 km per meter.<\/li>\n<li><strong>Inches, feet, and yards:<\/strong> 39.3701 in, 3.28084 ft, or 1.09361 yd per meter.<\/li>\n<li><strong>Longer distances:<\/strong> 0.000621371 mi or 0.000539957 nm per meter.<\/li>\n<\/ul>\n<p>These are <em>units per meter<\/em>, not meters per unit. To convert from a unit to meters, divide the entered value by its listed factor. To convert from meters to a unit, multiply by that factor. For metric-scale conversions involving other prefixes, the <a href=\"https:\/\/wpcalc.com\/en\/converters\/metric-prefix\/\">metric prefix converter<\/a> may also be useful.<\/p>\n<h2>Assumptions and practical tips<\/h2>\n<p>The calculator displays the result rounded to six decimal places. Its factors for inches, feet, yards, miles, and nautical miles are also rounded, so a converted value may differ slightly from one calculated using full-precision definitions. If you are checking a technical specification or need a regulated level of precision, use the specified conversion standard and retain sufficient digits throughout the calculation.<\/p>\n<p>Very small results can display as zero after rounding even though the unrounded length is greater than zero. In that case, try a smaller target unit: for example, choose millimeters instead of kilometers. The field accepts nonnegative values, so it is suited to lengths and distances rather than signed positions or displacements.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Convert a length or distance between meters, centimeters, millimeters, kilometers, inches, feet, yards, miles, and nautical miles. Enter a value, then choose the From unit and To unit.<\/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":[3],"tags":[29],"class_list":["post-55779","post","type-post","status-publish","format-standard","hentry","category-converters","tag-length-units"],"acf":[],"_links":{"self":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/55779","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=55779"}],"version-history":[{"count":3,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/55779\/revisions"}],"predecessor-version":[{"id":65282,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/55779\/revisions\/65282"}],"wp:attachment":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/media?parent=55779"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/categories?post=55779"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/tags?post=55779"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}