{"id":15425,"date":"2026-05-15T15:28:42","date_gmt":"2026-05-15T07:28:42","guid":{"rendered":"https:\/\/aobosteel.com\/?page_id=15425"},"modified":"2026-05-15T15:38:46","modified_gmt":"2026-05-15T07:38:46","slug":"steel-weight-calculator-for-round-bar-and-plate","status":"publish","type":"page","link":"https:\/\/aobosteel.com\/es\/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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var(--aobo-orange);\n      color: #ffffff;\n      box-shadow: 0 12px 22px rgba(255, 107, 44, 0.18);\n    }\n\n    .aobo-btn-secondary {\n      background: #ffffff;\n      color: var(--aobo-blue);\n      border: 1px solid var(--aobo-blue-border);\n    }\n\n    .aobo-btn:hover,\n    .aobo-btn:focus {\n      transform: translateY(-1px);\n    }\n\n    .aobo-card-note {\n      margin-top: 16px;\n      border-radius: 14px;\n      padding: 14px 16px;\n      color: var(--aobo-muted);\n      background: #ffffff;\n      border: 1px solid var(--aobo-blue-border);\n      font-size: 14px;\n      line-height: 1.65;\n    }\n\n    .aobo-error {\n      display: none;\n      margin-top: 16px;\n      border-radius: 14px;\n      padding: 14px 16px;\n      border: 1px solid #ffb8aa;\n      background: #fff4f1;\n      color: #9b2d1f;\n      font-size: 14px;\n      line-height: 1.65;\n    }\n\n    .aobo-error.is-visible {\n      display: block;\n    }\n\n    .aobo-warning {\n      background: var(--aobo-orange-soft);\n      border-left: 4px solid var(--aobo-orange);\n      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: 24px;\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-result-panel {\n        grid-template-columns: 1fr;\n        gap: 12px;\n        padding: 24px 20px;\n      }\n\n      .aobo-calc-grid {\n        grid-template-columns: 1fr;\n      }\n\n      .aobo-input-grid {\n        grid-template-columns: 1fr;\n      }\n\n      .aobo-btn {\n        width: 100%;\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-result-panel\" aria-live=\"polite\">\n      <div>\n        <p class=\"aobo-result-label\">Estimated weight<\/p>\n        <p class=\"aobo-result-value\" id=\"aoboResult\">0.00 kg<\/p>\n      <\/div>\n      <p class=\"aobo-result-note\" id=\"aoboResultNote\">Density: 7.85 g\/cm3. Choose a calculator below and enter dimensions.<\/p>\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-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\" placeholder=\"Example: 50\">\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\" placeholder=\"Example: 6000\">\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-button-row\">\n          <button class=\"aobo-btn aobo-btn-primary\" type=\"submit\">Calculate Round Bar<\/button>\n          <button class=\"aobo-btn aobo-btn-secondary\" type=\"button\" data-aobo-reset>Reset<\/button>\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-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\" placeholder=\"Example: 10\">\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\" placeholder=\"Example: 1500\">\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\" placeholder=\"Example: 6000\">\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-button-row\">\n          <button class=\"aobo-btn aobo-btn-orange\" type=\"submit\">Calculate Plate<\/button>\n          <button class=\"aobo-btn aobo-btn-secondary\" type=\"button\" data-aobo-reset>Reset<\/button>\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-error\" id=\"aoboError\">Please enter all required dimensions greater than 0.<\/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 result = calculator.querySelector(\"#aoboResult\");\n      var resultNote = calculator.querySelector(\"#aoboResultNote\");\n      var error = calculator.querySelector(\"#aoboError\");\n      var forms = calculator.querySelectorAll(\"[data-aobo-form]\");\n\n      function getNumber(form, name) {\n        var input = form.elements.namedItem(name);\n        return input ? parseFloat(input.value) : 0;\n      }\n\n      function showError(message) {\n        error.textContent = message;\n        error.classList.add(\"is-visible\");\n      }\n\n      function hideError() {\n        error.classList.remove(\"is-visible\");\n      }\n\n      function formatKg(value) {\n        return value.toLocaleString(undefined, {\n          minimumFractionDigits: 2,\n          maximumFractionDigits: 2\n        }) + \" kg\";\n      }\n\n      function setResult(weight, label) {\n        result.textContent = formatKg(weight);\n        resultNote.textContent = label + \" | Density: 7.85 g\/cm3\";\n      }\n\n      function calculateRound(form) {\n        var diameter = getNumber(form, \"diameter\");\n        var length = getNumber(form, \"length\");\n        var quantity = getNumber(form, \"quantity\") || 1;\n\n        if (diameter <= 0 || length <= 0 || quantity <= 0) {\n          showError(\"Please enter diameter, length, and quantity greater than 0.\");\n          return;\n        }\n\n        hideError();\n        setResult(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\") || 1;\n\n        if (thickness <= 0 || width <= 0 || length <= 0 || quantity <= 0) {\n          showError(\"Please enter thickness, width, length, and quantity greater than 0.\");\n          return;\n        }\n\n        hideError();\n        setResult(thickness * width * length * 0.00000785 * quantity, \"Steel plate total\");\n      }\n\n      function hasRequiredValues(form) {\n        var type = form.getAttribute(\"data-aobo-form\");\n\n        if (type === \"round\") {\n          return getNumber(form, \"diameter\") > 0 && getNumber(form, \"length\") > 0 && getNumber(form, \"quantity\") > 0;\n        }\n\n        return getNumber(form, \"thickness\") > 0 && getNumber(form, \"width\") > 0 && getNumber(form, \"length\") > 0 && getNumber(form, \"quantity\") > 0;\n      }\n\n      function calculateForm(form, showValidation) {\n        var type = form.getAttribute(\"data-aobo-form\");\n\n        if (!hasRequiredValues(form)) {\n          if (showValidation) {\n            if (type === \"round\") {\n              showError(\"Please enter diameter, length, and quantity greater than 0.\");\n            } else {\n              showError(\"Please enter thickness, width, length, and quantity greater than 0.\");\n            }\n          } else {\n            hideError();\n          }\n\n          return;\n        }\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          calculateForm(form, true);\n        });\n\n        form.addEventListener(\"input\", function () {\n          calculateForm(form, false);\n        });\n      });\n\n      calculator.querySelectorAll(\"[data-aobo-reset]\").forEach(function (button) {\n        button.addEventListener(\"click\", function () {\n          var form = button.closest(\"form\");\n          form.reset();\n          hideError();\n          result.textContent = \"0.00 kg\";\n          resultNote.textContent = \"Density: 7.85 g\/cm3. Choose a calculator below and enter dimensions.\";\n        });\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. Estimated weight 0.00 kg Density: 7.85 g\/cm3. Choose a calculator below and enter dimensions. Round Bar [&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 (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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