{"id":15425,"date":"2026-05-15T15:28:42","date_gmt":"2026-05-15T07:28:42","guid":{"rendered":"https:\/\/aobosteel.com\/?page_id=15425"},"modified":"2026-05-18T23:41:37","modified_gmt":"2026-05-18T15:41:37","slug":"steel-weight-calculator-for-round-bar-and-plate","status":"publish","type":"page","link":"https:\/\/aobosteel.com\/pt\/steel-weight-calculator-for-round-bar-and-plate\/","title":{"rendered":"Steel Weight Calculator for Round Bar and Plate | Aobo Steel"},"content":{"rendered":"\n<section class=\"aobo-weight-page\">\n  <style>\n    .aobo-weight-page {\n      --aobo-blue: #0c56d0;\n      --aobo-blue-dark: #16385f;\n      --aobo-blue-soft: #eaf4ff;\n      --aobo-blue-border: #d7e8fb;\n      --aobo-orange: #ff6b2c;\n      --aobo-orange-soft: #fff0e8;\n      --aobo-text: #23364d;\n      --aobo-muted: #52647a;\n      font-family: Arial, Helvetica, sans-serif;\n      color: var(--aobo-text);\n      background: transparent;\n      padding: 0;\n      box-sizing: border-box;\n    }\n\n  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border-radius: 14px;\n      padding: 16px 18px;\n      color: var(--aobo-muted);\n      line-height: 1.65;\n      font-size: 14.5px;\n      margin-top: 18px;\n    }\n\n    @media (max-width: 900px) {\n      .aobo-weight-page {\n        padding: 0;\n      }\n\n      .aobo-hero,\n      .aobo-calc-card {\n        padding: 28px 22px;\n        border-radius: 22px;\n      }\n\n      .aobo-calc-body {\n        display: grid;\n        grid-template-columns: 1fr;\n      }\n\n      .aobo-input-grid {\n        grid-template-columns: repeat(2, minmax(0, 132px));\n        max-width: 100%;\n      }\n\n      .aobo-field {\n        width: 100%;\n        max-width: 132px;\n      }\n\n      .aobo-inline-result {\n        flex: initial;\n      }\n    }\n  <\/style>\n\n  <div class=\"aobo-weight-wrap\">\n    <div class=\"aobo-hero\">\n      <div>\n        <div class=\"aobo-kicker\">Aobo Steel Technical Tool<\/div>\n        <h1>Steel Weight Calculator for Round Bar and Plate<\/h1>\n        <p>\n          Calculate estimated steel weight in kilograms for common bulk supply sizes. Enter dimensions in millimeters, add quantity, and use the result for inquiry, quotation, and shipment planning.\n        <\/p>\n      <\/div>\n    <\/div>\n\n    <div class=\"aobo-calc-grid\">\n      <form class=\"aobo-calc-card\" id=\"aoboRoundForm\" data-aobo-form=\"round\">\n        <div class=\"aobo-calc-head\">\n          <h2>Round Bar Weight<\/h2>\n          <p>\n            Use this calculator for hot rolled, forged, peeled, or ground round bar. Input diameter and length in mm.\n          <\/p>\n        <\/div>\n\n        <div class=\"aobo-calc-body\">\n          <div class=\"aobo-input-grid\">\n            <div class=\"aobo-field\">\n              <label for=\"aoboRoundDiameter\">Diameter<\/label>\n              <div class=\"aobo-input-wrap\">\n                <input id=\"aoboRoundDiameter\" name=\"diameter\" type=\"number\" min=\"0\" step=\"0.01\" inputmode=\"decimal\">\n                <span class=\"aobo-unit\">mm<\/span>\n              <\/div>\n            <\/div>\n\n            <div class=\"aobo-field\">\n              <label for=\"aoboRoundLength\">Length<\/label>\n              <div class=\"aobo-input-wrap\">\n                <input id=\"aoboRoundLength\" name=\"length\" type=\"number\" min=\"0\" step=\"0.01\" inputmode=\"decimal\">\n                <span class=\"aobo-unit\">mm<\/span>\n              <\/div>\n            <\/div>\n\n            <div class=\"aobo-field\">\n              <label for=\"aoboRoundQty\">Quantity<\/label>\n              <div class=\"aobo-input-wrap\">\n                <input id=\"aoboRoundQty\" name=\"quantity\" type=\"number\" min=\"1\" step=\"1\" inputmode=\"numeric\" value=\"1\">\n                <span class=\"aobo-unit\">pcs<\/span>\n              <\/div>\n            <\/div>\n          <\/div>\n\n          <div class=\"aobo-inline-result\" aria-live=\"polite\" data-aobo-result-panel>\n            <p class=\"aobo-inline-result-label\">Estimated Weight<\/p>\n            <p class=\"aobo-inline-result-value\" data-aobo-result-value>0.00 kg<\/p>\n            <p class=\"aobo-inline-result-note\" data-aobo-result-note>Enter diameter, length, and quantity to see the round bar total automatically.<\/p>\n          <\/div>\n        <\/div>\n\n        <div class=\"aobo-card-note\">Formula: diameter x diameter x length x 0.000006165 x quantity.<\/div>\n      <\/form>\n\n      <form class=\"aobo-calc-card aobo-plate-card\" id=\"aoboPlateForm\" data-aobo-form=\"plate\">\n        <div class=\"aobo-calc-head\">\n          <h2>Steel Plate Weight<\/h2>\n          <p>\n            Use this calculator for tool steel plate, flat bar, block, or cut-to-size plate. Input thickness, width, and length in mm.\n          <\/p>\n        <\/div>\n\n        <div class=\"aobo-calc-body\">\n          <div class=\"aobo-input-grid\">\n            <div class=\"aobo-field\">\n              <label for=\"aoboPlateThickness\">Thickness<\/label>\n              <div class=\"aobo-input-wrap\">\n                <input id=\"aoboPlateThickness\" name=\"thickness\" type=\"number\" min=\"0\" step=\"0.01\" inputmode=\"decimal\">\n                <span class=\"aobo-unit\">mm<\/span>\n              <\/div>\n            <\/div>\n\n            <div class=\"aobo-field\">\n              <label for=\"aoboPlateWidth\">Width<\/label>\n              <div class=\"aobo-input-wrap\">\n                <input id=\"aoboPlateWidth\" name=\"width\" type=\"number\" min=\"0\" step=\"0.01\" inputmode=\"decimal\">\n                <span class=\"aobo-unit\">mm<\/span>\n              <\/div>\n            <\/div>\n\n            <div class=\"aobo-field\">\n              <label for=\"aoboPlateLength\">Length<\/label>\n              <div class=\"aobo-input-wrap\">\n                <input id=\"aoboPlateLength\" name=\"length\" type=\"number\" min=\"0\" step=\"0.01\" inputmode=\"decimal\">\n                <span class=\"aobo-unit\">mm<\/span>\n              <\/div>\n            <\/div>\n\n            <div class=\"aobo-field\">\n              <label for=\"aoboPlateQty\">Quantity<\/label>\n              <div class=\"aobo-input-wrap\">\n                <input id=\"aoboPlateQty\" name=\"quantity\" type=\"number\" min=\"1\" step=\"1\" inputmode=\"numeric\" value=\"1\">\n                <span class=\"aobo-unit\">pcs<\/span>\n              <\/div>\n            <\/div>\n          <\/div>\n\n          <div class=\"aobo-inline-result\" aria-live=\"polite\" data-aobo-result-panel>\n            <p class=\"aobo-inline-result-label\">Estimated Weight<\/p>\n            <p class=\"aobo-inline-result-value\" data-aobo-result-value>0.00 kg<\/p>\n            <p class=\"aobo-inline-result-note\" data-aobo-result-note>Enter thickness, width, length, and quantity to see the plate total automatically.<\/p>\n          <\/div>\n        <\/div>\n\n        <div class=\"aobo-card-note\">Formula: thickness x width x length x 0.00000785 x quantity.<\/div>\n      <\/form>\n    <\/div>\n\n    <div class=\"aobo-warning\">\n      Weight is an estimate based on steel density 7.85 g\/cm3. Actual order weight may vary with tolerance, machining allowance, cutting loss, and surface condition.\n    <\/div>\n  <\/div>\n\n  <script>\n    (function () {\n      var calculator = document.querySelector(\".aobo-weight-page\");\n      if (!calculator) {\n        return;\n      }\n\n      var forms = calculator.querySelectorAll(\"[data-aobo-form]\");\n\n      function getNumber(form, name) {\n        var input = form.elements.namedItem(name);\n        if (!input) {\n          return null;\n        }\n\n        var value = (input.value || \"\").trim();\n        if (value === \"\") {\n          return null;\n        }\n\n        var parsed = parseFloat(value);\n        return Number.isFinite(parsed) ? parsed : null;\n      }\n\n      function formatKg(value) {\n        return value.toLocaleString(undefined, {\n          minimumFractionDigits: 2,\n          maximumFractionDigits: 2\n        }) + \" kg\";\n      }\n\n      function setResult(form, weight, label) {\n        var panel = form.querySelector(\"[data-aobo-result-panel]\");\n        var value = form.querySelector(\"[data-aobo-result-value]\");\n        var note = form.querySelector(\"[data-aobo-result-note]\");\n\n        if (!panel || !value || !note) {\n          return;\n        }\n\n        value.textContent = formatKg(weight);\n        note.textContent = label + \" | Density: 7.85 g\/cm3\";\n        panel.classList.add(\"is-active\");\n      }\n\n      function resetResult(form, message, isError) {\n        var panel = form.querySelector(\"[data-aobo-result-panel]\");\n        var value = form.querySelector(\"[data-aobo-result-value]\");\n        var note = form.querySelector(\"[data-aobo-result-note]\");\n\n        if (!panel || !value || !note) {\n          return;\n        }\n\n        value.textContent = \"0.00 kg\";\n        note.textContent = message;\n        panel.classList.toggle(\"is-active\", !!isError);\n      }\n\n      function calculateRound(form) {\n        var diameter = getNumber(form, \"diameter\");\n        var length = getNumber(form, \"length\");\n        var quantity = getNumber(form, \"quantity\");\n\n        if (diameter === null && length === null && quantity === null) {\n          resetResult(form, \"0.00 kg\");\n          return;\n        }\n\n        if (diameter === null || length === null || quantity === null) {\n          resetResult(form, \"Complete all fields to see the round bar total.\");\n          return;\n        }\n\n        if (diameter <= 0 || length <= 0 || quantity <= 0) {\n          resetResult(form, \"Please enter values greater than 0 for diameter, length, and quantity.\", true);\n          return;\n        }\n\n        setResult(form, diameter * diameter * length * 0.000006165 * quantity, \"Round bar total\");\n      }\n\n      function calculatePlate(form) {\n        var thickness = getNumber(form, \"thickness\");\n        var width = getNumber(form, \"width\");\n        var length = getNumber(form, \"length\");\n        var quantity = getNumber(form, \"quantity\");\n\n        if (thickness === null &#038;&#038; width === null &#038;&#038; length === null &#038;&#038; quantity === null) {\n          resetResult(form, \"0.00 kg\");\n          return;\n        }\n\n        if (thickness === null || width === null || length === null || quantity === null) {\n          resetResult(form, \"Complete all fields to see the plate total.\");\n          return;\n        }\n\n        if (thickness <= 0 || width <= 0 || length <= 0 || quantity <= 0) {\n          resetResult(form, \"Please enter values greater than 0 for thickness, width, length, and quantity.\", true);\n          return;\n        }\n\n        setResult(form, thickness * width * length * 0.00000785 * quantity, \"Steel plate total\");\n      }\n\n      function calculateForm(form) {\n        var type = form.getAttribute(\"data-aobo-form\");\n\n        if (type === \"round\") {\n          calculateRound(form);\n        } else {\n          calculatePlate(form);\n        }\n      }\n\n      forms.forEach(function (form) {\n        form.addEventListener(\"submit\", function (event) {\n          event.preventDefault();\n        });\n\n        form.addEventListener(\"input\", function () {\n          calculateForm(form);\n        });\n\n        calculateForm(form);\n      });\n    })();\n  <\/script>\n<\/section>\n\n","protected":false},"excerpt":{"rendered":"<p>Aobo Steel Technical Tool Steel Weight Calculator for Round Bar and Plate Calculate estimated steel weight in kilograms for common bulk supply sizes. Enter dimensions in millimeters, add quantity, and use the result for inquiry, quotation, and shipment planning. Round Bar Weight Use this calculator for hot rolled, forged, peeled, or ground round bar. Input [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"content-type":"","_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"normal-width-container","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"class_list":["post-15425","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.6.1 (Yoast SEO v27.6) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Steel Weight Calculator for Round Bar and Plate | Aobo Steel - AoboSteel<\/title>\n<meta name=\"description\" content=\"Use this steel weight calculator to estimate round bar, steel plate, and flat bar weight in kg. 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