{"id":66605,"date":"2026-10-09T10:11:13","date_gmt":"2026-10-09T07:11:13","guid":{"rendered":"https:\/\/wpcalc.com\/en\/?p=66605"},"modified":"2026-10-09T10:11:13","modified_gmt":"2026-10-09T07:11:13","slug":"trailer-tongue-weight-calculator","status":"publish","type":"post","link":"https:\/\/wpcalc.com\/en\/life\/trailer-tongue-weight-calculator\/","title":{"rendered":"Trailer Tongue Weight 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\">Check or Plan Your Trailer Tongue Weight<\/h2><\/div><div class=\"calcdash-favorite group\">\n  <button type=\"button\" class=\"favorite\" id=\"favorite\" data-favorite-id=\"66605\" data-favorite-title=\"Trailer Tongue Weight\" data-favorite-url=\"https:\/\/wpcalc.com\/en\/life\/trailer-tongue-weight-calculator\/\" data-favorite-excerpt=\"Enter your loaded trailer weight and either a measured tongue weight or a target percentage, and the calculator checks whether the hitch load falls in the safe 10\u201315% range for stable towing.\" aria-label=\"Add to Favorites\" data-favorite-icon=\"icon icon-roadways\">\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\/life\/trailer-tongue-weight-calculator\/\" method=\"POST\" class=\"calculator\" id=\"calculator-66605\" data-post=\"66605\"><fieldset class=\"fieldset-input is-2\"><legend class=\"sr-only\">Input Fields<\/legend><div class=\"field\" id=\"input-1\"><label for=\"field-1\">Weight unit<\/label><div class=\"grid grid-cols-1\"><select id=\"field-1\" name=\"weight_unit\"><option value=\"kg\" selected>kilograms (kg)<\/option><option value=\"lb\">pounds (lb)<\/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-2\"><label for=\"field-2\">Loaded trailer weight (W)<\/label><input type=\"text\" name=\"loaded_trailer_weight_w\" id=\"field-2\" aria-describedby=\"calc-info-2\" data-number inputmode=\"decimal\" autocomplete=\"off\" spellcheck=\"false\" min=\"1\" value=\"1500\"\/><small id=\"calc-info-2\">Gross weight fully loaded: trailer plus cargo, water, fuel<\/small><\/div><div class=\"field is-single\" id=\"input-3\"><label for=\"field-3\">What do you want to do?<\/label><div class=\"grid grid-cols-1\"><select id=\"field-3\" name=\"what_do_you_want_to_do\"><option value=\"check\" selected>Check a measured tongue weight<\/option><option value=\"plan\">Plan a target tongue weight<\/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-4\"><label for=\"field-4\">Measured tongue weight (TW)<\/label><input type=\"text\" name=\"measured_tongue_weight_tw\" id=\"field-4\" aria-describedby=\"calc-info-4\" data-number inputmode=\"decimal\" autocomplete=\"off\" spellcheck=\"false\" min=\"0\" value=\"180\"\/><small id=\"calc-info-4\">Weight pressing on the hitch, measured with a scale or a tongue-weight scale<\/small><\/div><div class=\"field\" id=\"input-5\" hidden><label for=\"field-5\">Target tongue-weight percentage (T%)<\/label><input type=\"text\" name=\"target_tongueweight_percentage_t\" id=\"field-5\" aria-describedby=\"calc-unit-5 calc-info-5\" data-number inputmode=\"decimal\" autocomplete=\"off\" spellcheck=\"false\" min=\"1\" max=\"40\" value=\"12\"\/><div class=\"unit\" id=\"calc-unit-5\">%<\/div><small id=\"calc-info-5\">Share of the trailer weight you want on the hitch (10\u201315% is typical)<\/small><\/div><\/fieldset><div class=\"buttons\"><button type=\"submit\" data-text=\"Re-Calculate\" id=\"calculate-button\" data-post=\"66605\">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> Tongue Weight Check<\/h3><div class=\"result-box\"><div class=\"field-result\" id=\"output-1\"><span class=\"field-title\"><span>Tongue weight<\/span><span class=\"result-term\">TW<\/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 class=\"field-result\" id=\"output-2\"><span class=\"field-title\"><span>Tongue-weight percentage<\/span><span class=\"result-term\">%<\/span><\/span><span class=\"field-value\" id=\"result-2\"><\/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 class=\"field-result\" id=\"output-3\"><span class=\"field-title\"><span>Recommended range (10\u201315%)<\/span><span class=\"result-term\">R<\/span><\/span><span class=\"field-value\" id=\"result-3\"><\/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 class=\"field-result is-column\" id=\"output-4\"><span class=\"field-title\"><span>Status<\/span><\/span><span class=\"field-value\" id=\"result-4\"><\/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=\"66605\" 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>Trailer Tongue Weight 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\">\\[ \\text{TW\\%} = \\frac{\\text{TW}}{W} \\times 100 \\]\nTo plan a target tongue weight, the formula is reversed:\n\\[ \\text{TW} = W \\times \\frac{T\\%}{100} \\]<\/div>\r\n\t<\/figure>\r\n\t<\/p>\n<p><strong>Where:<\/strong><\/p>\n<ul>\n<li>\\(\\text{TW}\\) \u2014 tongue weight, the load pressing down on the hitch<\/li>\n<li>\\(W\\) \u2014 loaded (gross) trailer weight, including trailer, cargo, water and fuel<\/li>\n<li>\\(T\\%\\) \u2014 target tongue-weight percentage<\/li>\n<\/ul>\n<p>The first formula tells you what share of the total trailer weight is carried by the hitch; the second tells you how many kilograms or pounds should rest on the hitch to hit a chosen percentage.<\/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>Trailer Tongue Weight \u2013 Calculation Example<\/h2><\/div>\r\n\r\n<\/p>\n<p><strong>Example:<\/strong> a loaded trailer weighs 1500 kg, and a tongue-weight scale reads 180 kg on the hitch.<\/p>\n<p>\\[ \\text{TW\\%} = \\frac{180}{1500} \\times 100 = 12\\,\\% \\]<\/p>\n<p>The recommended 10\u201315% range for this trailer is:<\/p>\n<p>\\[ 1500 \\times 0.10 = 150 \\text{ kg} \\quad \\text{to} \\quad 1500 \\times 0.15 = 225 \\text{ kg} \\]<\/p>\n<p><strong>Result:<\/strong> the tongue weight of 180 kg equals 12% of the trailer weight, which sits comfortably inside the recommended range of 150\u2013225 kg. The load is set up correctly for stable towing.<\/p>\n<p>\n\r\n<\/section>\n<h2>How to use the calculator<\/h2>\n<ol>\n<li>Choose the <strong>Weight unit<\/strong> \u2014 kilograms or pounds. It applies to every weight you enter and to the results.<\/li>\n<li>Enter the <strong>Loaded trailer weight (W)<\/strong> \u2014 the fully loaded gross weight, not the empty (dry) weight. Include cargo, water, fuel and propane.<\/li>\n<li>Pick what you want to do with <strong>What do you want to do?<\/strong> \u2014 check a weight you have already measured on a scale, or plan how much tongue weight you should aim for when loading.<\/li>\n<li>In <em>Check<\/em> mode, enter the <strong>Measured tongue weight (TW)<\/strong> from your scale. The calculator shows the percentage and whether it is in the safe range.<\/li>\n<li>In <em>Plan<\/em> mode, enter your <strong>Target tongue-weight percentage (T%)<\/strong> instead, and the calculator converts it into an actual weight to aim for.<\/li>\n<li>Read the <strong>Status<\/strong> line: it tells you whether the hitch load is good, too light (sway risk) or too heavy (hitch overload risk), and what to move.<\/li>\n<\/ol>\n<h2>What is tongue weight and why it matters<\/h2>\n<p>Tongue weight is the downward force the trailer exerts on the hitch ball of the tow vehicle. For a conventional bumper-pull trailer, this is typically 10\u201315% of the fully loaded trailer weight. That downward force does two important jobs: it keeps the trailer tracking straight behind the vehicle, and it presses the rear axle of the tow vehicle down, which affects steering, braking and suspension.<\/p>\n<p>Too little tongue weight is the more dangerous mistake. When less than about 10% of the weight sits on the hitch, the trailer's center of mass sits too far back, and the coupling becomes unstable. At highway speed this can trigger <em>trailer sway<\/em> \u2014 a growing side-to-side oscillation that is difficult to recover from. The classic cure is to shift heavy cargo forward, ahead of the trailer axle.<\/p>\n<p>Too much tongue weight causes the opposite problem: the rear of the tow vehicle squats, the front axle unloads, steering and braking performance drop, and you may exceed the hitch rating or the vehicle's payload capacity. If your measured percentage consistently runs above 15%, move cargo rearward (behind the axle), redistribute water and fuel tanks, or consider a weight-distributing hitch if your setup allows one.<\/p>\n<p>Note that gooseneck and fifth-wheel trailers follow a different rule \u2014 they typically need 15\u201325% of the trailer weight on the hitch because the coupling point sits over the rear axle rather than behind the bumper.<\/p>\n<h2>Assumptions, limitations and practical tips<\/h2>\n<ul>\n<li><strong>Weigh the trailer loaded.<\/strong> Dry weights from brochures are misleading. Cargo, water, fuel and propane can add hundreds of kilograms. Use a weighbridge or weigh each axle at a public scale.<\/li>\n<li><strong>Measure the tongue weight at towing height.<\/strong> Use a dedicated tongue-weight scale, a bathroom scale with a lever setup, or a vehicle scale with the trailer coupled and the wheels chocked. Measuring at the wrong height skews the reading.<\/li>\n<li><strong>Stay within ratings.<\/strong> Even a \"correct\" percentage can overload your equipment. Check the tongue weight against the hitch rating, the tow vehicle's payload and its maximum tongue-weight rating. The <a href=\"https:\/\/wpcalc.com\/en\/life\/vehicle-payload-calculator\/\">Vehicle Payload Calculator<\/a> helps you see whether the hitch load plus passengers and cargo fits within your vehicle's limits.<\/li>\n<li><strong>Re-check after every trip change.<\/strong> Loading a different set of gear, filling the water tank or moving a generator changes the balance. A quick re-measure before a long trip takes minutes and prevents sway problems.<\/li>\n<li><strong>The 10\u201315% rule is a guideline, not a law.<\/strong> Some setups are stable slightly below or above it, but the farther you drift outside the range, the higher the risk. The calculator flags readings below 9% or above 16% as clearly unsafe.<\/li>\n<li><strong>Weight distribution does not change the percentage.<\/strong> A weight-distributing hitch spreads the hitch load to the front axle and trailer axles, improving vehicle attitude, but the raw tongue weight and its percentage stay the same.<\/li>\n<\/ul>\n<p>Once your hitch load is dialed in, planning the rest of the trip becomes easier: use the <a href=\"https:\/\/wpcalc.com\/en\/life\/road-trip-fuel-stops-calculator\/\">Road Trip Fuel Stops Calculator<\/a> to plan refueling with a loaded trailer, and the <a href=\"https:\/\/wpcalc.com\/en\/life\/road-trip-arrival-time-calculator\/\">Road Trip Arrival Time Calculator<\/a> to estimate when you will arrive at realistic towing speeds.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Enter your loaded trailer weight and either a measured tongue weight or a target percentage, and the calculator checks whether the hitch load falls in the safe 10\u201315% range for stable towing.<\/p>\n","protected":false},"author":3168,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[6],"tags":[99],"class_list":["post-66605","post","type-post","status-publish","format-standard","hentry","category-life","tag-auto-travel"],"acf":[],"_links":{"self":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/66605","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\/3168"}],"replies":[{"embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/comments?post=66605"}],"version-history":[{"count":1,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/66605\/revisions"}],"predecessor-version":[{"id":66606,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/66605\/revisions\/66606"}],"wp:attachment":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/media?parent=66605"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/categories?post=66605"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/tags?post=66605"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}