{"id":55864,"date":"2015-10-24T16:03:20","date_gmt":"2015-10-24T14:03:20","guid":{"rendered":"http:\/\/wpcalc.com\/?p=55864"},"modified":"2026-09-28T09:28:02","modified_gmt":"2026-09-28T06:28:02","slug":"magnetic-flux-density","status":"publish","type":"post","link":"https:\/\/wpcalc.com\/en\/converters\/magnetic-flux-density\/","title":{"rendered":"Magnetic Flux Density 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\">Convert Magnetic Flux Density Between Units<\/h2><\/div><div class=\"calcdash-favorite group\">\n  <button type=\"button\" class=\"favorite\" id=\"favorite\" data-favorite-id=\"55864\" data-favorite-title=\"Magnetic Flux Density\" data-favorite-url=\"https:\/\/wpcalc.com\/en\/converters\/magnetic-flux-density\/\" data-favorite-excerpt=\"Convert magnetic flux density between tesla, millitesla, microtesla, nanotesla, gauss, and kilogauss. Enter a value, then choose the From unit and To unit.\" aria-label=\"Add to Favorites\" data-favorite-icon=\"icon icon-physic\">\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\/magnetic-flux-density\/\" method=\"POST\" class=\"calculator\" id=\"calculator-55864\" data-post=\"55864\"><fieldset class=\"fieldset-input\"><legend class=\"sr-only\">Input Fields<\/legend><div class=\"field is-single\" id=\"input-1\"><label for=\"field-1\">Magnetic flux density value<\/label><input type=\"text\" name=\"magnetic_flux_density_value\" id=\"field-1\" aria-describedby=\"calc-unit-1 calc-info-1\" data-number inputmode=\"decimal\" autocomplete=\"off\" spellcheck=\"false\" min=\"0\" value=\"0.01\"\/><div class=\"unit\" id=\"calc-unit-1\"><\/div><small id=\"calc-info-1\">Enter the magnetic flux density value 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=\"T\">Tesla (T)<\/option><option value=\"mT\">Millitesla (mT)<\/option><option value=\"\u00b5T\">Microtesla (\u00b5T)<\/option><option value=\"nT\">Nanotesla (nT)<\/option><option value=\"G\">Gauss (G)<\/option><option value=\"kG\">Kilogauss (kG)<\/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=\"T\">Tesla (T)<\/option><option value=\"mT\">Millitesla (mT)<\/option><option value=\"\u00b5T\">Microtesla (\u00b5T)<\/option><option value=\"nT\">Nanotesla (nT)<\/option><option value=\"G\">Gauss (G)<\/option><option value=\"kG\">Kilogauss (kG)<\/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=\"55864\">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 Magnetic Flux Density<\/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=\"55864\" 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>Magnetic Flux Density 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\\[ B_{\\mathrm{to}}=B_{\\mathrm{from}}\\frac{f_{\\mathrm{from}}}{f_{\\mathrm{to}}} \\]\n<\/div>\r\n\t<\/figure>\r\n\t<\/p>\n<p><strong>Where:<\/strong><\/p>\n<ul>\n<li>\\(B_{\\mathrm{from}}\\) \u2014 the entered magnetic flux density<\/li>\n<li>\\(B_{\\mathrm{to}}\\) \u2014 the converted magnetic flux density<\/li>\n<li>\\(f_{\\mathrm{from}}\\) \u2014 tesla per unit of the selected From unit<\/li>\n<li>\\(f_{\\mathrm{to}}\\) \u2014 tesla per unit of the selected To unit<\/li>\n<\/ul>\n<p>The converter first expresses the entered value in tesla, then divides by the tesla equivalent of the target unit. The factors are listed in the reference table below.<\/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>Magnetic Flux Density \u2013 Calculation Example<\/h2><\/div>\r\n\r\n<\/p>\n<p><strong>Example:<\/strong> With the default settings, convert 0.01 tesla to gauss.<\/p>\n<p>Because 1 T equals 10,000 G, multiply the value in tesla by 10,000:<\/p>\n<p>\\[ 0.01\\,\\mathrm{T}\\times 10^{4}\\,\\frac{\\mathrm{G}}{\\mathrm{T}}=100\\,\\mathrm{G} \\]<\/p>\n<p><strong>Result:<\/strong> 0.01 T = 100 G.<\/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>Magnetic flux density value<\/strong>. The default is 0.01.<\/li>\n<li>Choose the unit of that number under <strong>From unit<\/strong>. The default is Tesla (T).<\/li>\n<li>Choose the unit you need under <strong>To unit<\/strong>. The default is Gauss (G).<\/li>\n<li>Read <strong>Converted Magnetic Flux Density<\/strong>, which displays the converted number and its unit symbol.<\/li>\n<\/ol>\n<p>You can choose the same unit in both menus to leave the numerical value unchanged. For a conversion in the opposite direction, swap the two unit selections and enter the value you want to convert.<\/p>\n<h2>What magnetic flux density means<\/h2>\n<p>Magnetic flux density, usually written \\(B\\), describes the magnetic field in terms of the flux passing through an area. Its SI unit is the tesla (T), equal to one weber per square meter (Wb\/m\u00b2). Flux density is used when describing fields around magnets and coils, and in equipment such as electric motors, transformers, and MRI systems. Converting its units changes only how a field value is expressed; it does not change the field itself.<\/p>\n<p>Tesla and its metric submultiples are convenient for different field magnitudes: millitesla (mT), microtesla (\u00b5T), and nanotesla (nT) represent successively smaller units. Gauss (G) and kilogauss (kG) are also used in magnetic-field specifications and older references. For example, 0.01 T, 10 mT, and 100 G all describe the same flux density. Selecting a suitable unit can make results easier to read and compare.<\/p>\n<p>Magnetic flux density is related to, but different from, <a href=\"https:\/\/wpcalc.com\/en\/converters\/magnetic-flux\/\">magnetic flux<\/a>. Flux describes a total through a surface, while flux density describes a field at a point or over a region. It is also distinct from magnetic field strength \\(H\\), which is measured in amperes per meter. The relationship between \\(B\\) and \\(H\\) depends on the medium; <a href=\"https:\/\/wpcalc.com\/en\/converters\/permeability\/\">permeability<\/a> is relevant when working with that relationship. This page converts units of \\(B\\); it does not calculate \\(B\\) from flux, current, or material properties.<\/p>\n<h2>Conversion factors<\/h2>\n<p>The calculator uses tesla as its common reference. Multiply a value by the factor in the right-hand column to express it in tesla; divide a value in tesla by that factor to express it in the listed unit.<\/p>\n<table>\n<thead>\n<tr>\n<th>Unit<\/th>\n<th>Symbol<\/th>\n<th>Tesla per unit<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Tesla<\/td>\n<td>T<\/td>\n<td>1<\/td>\n<\/tr>\n<tr>\n<td>Millitesla<\/td>\n<td>mT<\/td>\n<td>0.001<\/td>\n<\/tr>\n<tr>\n<td>Microtesla<\/td>\n<td>\u00b5T<\/td>\n<td>0.000001<\/td>\n<\/tr>\n<tr>\n<td>Nanotesla<\/td>\n<td>nT<\/td>\n<td>0.000000001<\/td>\n<\/tr>\n<tr>\n<td>Gauss<\/td>\n<td>G<\/td>\n<td>0.0001<\/td>\n<\/tr>\n<tr>\n<td>Kilogauss<\/td>\n<td>kG<\/td>\n<td>0.1<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>In particular, 1 T = 10,000 G and 1 G = 100 \u00b5T. Also, 1 kG = 1,000 G = 0.1 T. These equalities are useful checks when moving between SI units and gauss-based measurements.<\/p>\n<h2>Assumptions and practical tips<\/h2>\n<p>This is a unit converter, not a model of a magnetic field. It assumes the entered number already represents magnetic flux density and applies fixed conversion factors. Weber per square meter is equivalent to tesla, but Wb\/m\u00b2 is not a separate menu option. If a source gives a value in Wb\/m\u00b2, select T as the From unit.<\/p>\n<p>The input accepts nonnegative values. A negative value can indicate direction along a chosen axis, but that sign cannot be entered here; converting a magnitude does not describe the field\u2019s direction. Keep any direction information separately when reporting a measurement.<\/p>\n<p>The displayed result is rounded to ten decimal places. Very small results in a large unit, such as an extremely small field expressed in tesla, may therefore display as zero. Choose a smaller target unit, such as nT, to show more of the value. Conversion also cannot add precision to the original measurement: report only as many significant digits as its source supports.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Convert magnetic flux density between tesla, millitesla, microtesla, nanotesla, gauss, and kilogauss. 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":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[3],"tags":[34],"class_list":["post-55864","post","type-post","status-publish","format-standard","hentry","category-converters","tag-physics-units"],"acf":[],"_links":{"self":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/55864","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=55864"}],"version-history":[{"count":3,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/55864\/revisions"}],"predecessor-version":[{"id":65290,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/55864\/revisions\/65290"}],"wp:attachment":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/media?parent=55864"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/categories?post=55864"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/tags?post=55864"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}