{"id":55856,"date":"2015-10-24T16:03:25","date_gmt":"2015-10-24T14:03:25","guid":{"rendered":"http:\/\/wpcalc.com\/?p=55856"},"modified":"2026-09-28T09:27:37","modified_gmt":"2026-09-28T06:27:37","slug":"magnetic-flux","status":"publish","type":"post","link":"https:\/\/wpcalc.com\/en\/converters\/magnetic-flux\/","title":{"rendered":"Magnetic Flux 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 Between Units<\/h2><\/div><div class=\"calcdash-favorite group\">\n  <button type=\"button\" class=\"favorite\" id=\"favorite\" data-favorite-id=\"55856\" data-favorite-title=\"Magnetic Flux\" data-favorite-url=\"https:\/\/wpcalc.com\/en\/converters\/magnetic-flux\/\" data-favorite-excerpt=\"Convert magnetic flux between webers, milliwebers, microwebers, nanowebers, and maxwells. 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\/\" method=\"POST\" class=\"calculator\" id=\"calculator-55856\" data-post=\"55856\"><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 value<\/label><input type=\"text\" name=\"magnetic_flux_value\" id=\"field-1\" aria-describedby=\"calc-unit-1 calc-info-1\" data-number inputmode=\"decimal\" autocomplete=\"off\" spellcheck=\"false\" min=\"0\" value=\"1\"\/><div class=\"unit\" id=\"calc-unit-1\"><\/div><small id=\"calc-info-1\">Enter the magnetic flux 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=\"Wb\">Weber (Wb)<\/option><option value=\"mWb\">Milliweber (mWb)<\/option><option value=\"\u00b5Wb\">Microweber (\u00b5Wb)<\/option><option value=\"nWb\">Nanoweber (nWb)<\/option><option value=\"Mx\">Maxwell (Mx)<\/option><option value=\"Wb\/m\u00b2\">Weber per square meter (for density)<\/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=\"Wb\">Weber (Wb)<\/option><option value=\"mWb\">Milliweber (mWb)<\/option><option value=\"\u00b5Wb\">Microweber (\u00b5Wb)<\/option><option value=\"nWb\">Nanoweber (nWb)<\/option><option value=\"Mx\">Maxwell (Mx)<\/option><option value=\"Wb\/m\u00b2\">Weber per square meter (for density)<\/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=\"55856\">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<\/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=\"55856\" 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 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\\[\\Phi_{\\text{to}}=\\Phi_{\\text{from}}\\frac{f_{\\text{from}}}{f_{\\text{to}}}\\]\n<\/div>\r\n\t<\/figure>\r\n\t<\/p>\n<p><strong>Where:<\/strong><\/p>\n<ul>\n<li>\\(\\Phi_{\\text{from}}\\) \u2014 the entered magnetic flux.<\/li>\n<li>\\(\\Phi_{\\text{to}}\\) \u2014 the converted magnetic flux.<\/li>\n<li>\\(f_{\\text{from}}\\) and \\(f_{\\text{to}}\\) \u2014 the respective units\u2019 values in webers.<\/li>\n<\/ul>\n<p>The converter first expresses the input in webers, then divides by the value of the destination unit in webers. This formula applies to flux units; Wb\/m\u00b2 is a flux density unit and cannot be converted to flux without an area.<\/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 \u2013 Calculation Example<\/h2><\/div>\r\n\r\n<\/p>\n<p><strong>Example:<\/strong> convert the default value of 1 weber (Wb) to maxwells (Mx). One maxwell equals \\(10^{-8}\\) Wb.<\/p>\n<p>\\[1\\ \\mathrm{Wb}\\times\\frac{1\\ \\mathrm{Wb}}{10^{-8}\\ \\mathrm{Wb\/Mx}}=100{,}000{,}000\\ \\mathrm{Mx}\\]<\/p>\n<p><strong>Result:<\/strong> 1 Wb = 100,000,000 Mx.<\/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 value<\/strong>.<\/li>\n<li>Choose the unit of that number in <strong>From unit<\/strong>.<\/li>\n<li>Choose the unit you need in <strong>To unit<\/strong>.<\/li>\n<li>Read the <strong>Converted Magnetic Flux<\/strong> result. For a flux conversion, choose Wb, mWb, \u00b5Wb, nWb, or Mx in both unit fields.<\/li>\n<\/ol>\n<p>For example, leave the default settings at 1, Wb, and Mx to obtain 100,000,000 Mx. You can reverse the selections to convert maxwells back to webers. If you are copying a value from a specification, check its unit symbol before entering it: mWb and \u00b5Wb differ by a factor of 1,000.<\/p>\n<h2>What magnetic flux means<\/h2>\n<p>Magnetic flux describes the magnetic field passing through a specified surface. Its SI unit is the weber (Wb); the maxwell (Mx) is a smaller unit used in the centimeter\u2013gram\u2013second (CGS) system. A weber is also equivalent to a volt-second (V\u00b7s), although V\u00b7s is not a selectable unit in this calculator. Flux conversions change how a quantity is expressed, not the physical quantity itself.<\/p>\n<p>Flux depends on both the field and the surface. For a uniform magnetic field through a flat area, its magnitude is \\(\\Phi=BA\\cos\\theta\\), where \\(B\\) is magnetic flux density, \\(A\\) is area, and \\(\\theta\\) is the angle between the field and the surface normal. A field tilted relative to the surface normal produces less flux through that surface than the same field directed straight through it. For a field that varies over the surface, finding total flux requires accounting for that variation rather than multiplying one field value by the whole area.<\/p>\n<p>Flux is useful when interpreting transformer and coil specifications because a changing flux through a circuit is associated with an induced voltage. Converting units helps you compare values reported in different systems, but it does not calculate induced voltage or determine the field geometry. If the quantity you have is in teslas or Wb\/m\u00b2, use the <a href=\"https:\/\/wpcalc.com\/en\/converters\/magnetic-flux-density\/\">magnetic flux density converter<\/a> for density units instead.<\/p>\n<h2>Conversion factors and practical limits<\/h2>\n<p>The table gives the weber value of each supported <em>flux<\/em> unit. For instance, converting from \u00b5Wb to mWb divides the input\u2019s weber value by \\(10^{-3}\\). Choose units that keep the result at a useful scale: nWb may be easier to read than a very small decimal number of webers.<\/p>\n<table>\n<thead>\n<tr>\n<th>Unit<\/th>\n<th>Value in webers<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Weber (Wb)<\/td>\n<td>1 Wb<\/td>\n<\/tr>\n<tr>\n<td>Milliweber (mWb)<\/td>\n<td>\\(10^{-3}\\) Wb<\/td>\n<\/tr>\n<tr>\n<td>Microweber (\u00b5Wb)<\/td>\n<td>\\(10^{-6}\\) Wb<\/td>\n<\/tr>\n<tr>\n<td>Nanoweber (nWb)<\/td>\n<td>\\(10^{-9}\\) Wb<\/td>\n<\/tr>\n<tr>\n<td>Maxwell (Mx)<\/td>\n<td>\\(10^{-8}\\) Wb<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>Do not use Wb\/m\u00b2 for a flux conversion.<\/strong> The unit appears in the menus, but it measures magnetic flux density, not magnetic flux. The calculator assigns it the same numerical factor as Wb; a result involving Wb\/m\u00b2 therefore does not represent a valid conversion between flux and density. Converting between those quantities requires an area and information about the field\u2019s direction and distribution. For a uniform field perpendicular to a flat surface, flux equals flux density multiplied by area.<\/p>\n<p>The input accepts nonnegative values, so this tool is intended for magnitudes rather than signed flux through an oriented surface. Results are rounded to at most 10 decimal places; a sufficiently small result in webers may therefore display as zero. If that happens, select a smaller output unit, such as nWb or Mx. To explore related magnetic quantities, see the <a href=\"https:\/\/wpcalc.com\/en\/converters\/magnetomotive-force\/\">magnetomotive force converter<\/a> or the <a href=\"https:\/\/wpcalc.com\/en\/converters\/permeability\/\">permeability converter<\/a>; neither quantity is interchangeable with flux.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Convert magnetic flux between webers, milliwebers, microwebers, nanowebers, and maxwells. 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-55856","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\/55856","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=55856"}],"version-history":[{"count":3,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/55856\/revisions"}],"predecessor-version":[{"id":65289,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/55856\/revisions\/65289"}],"wp:attachment":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/media?parent=55856"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/categories?post=55856"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/tags?post=55856"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}