{"id":2965,"date":"2026-04-24T13:30:06","date_gmt":"2026-04-24T11:30:06","guid":{"rendered":"https:\/\/science-x.net\/?page_id=2965"},"modified":"2026-04-24T13:30:07","modified_gmt":"2026-04-24T11:30:07","slug":"planet-gravity-comparison-calculator","status":"publish","type":"page","link":"https:\/\/science-x.net\/?page_id=2965","title":{"rendered":"Planet Gravity Comparison Calculator"},"content":{"rendered":"\n<div class=\"eco-tool wp-block-group\" id=\"eco-tool-planet-gravity-83f7b\">\n  <div class=\"eco-tool__header\">\n    <h2 class=\"eco-tool__title\">Planet Gravity Comparison Calculator<\/h2>\n    <p class=\"eco-tool__lead\">\n      Compare how much you would weigh on different planets and the Moon based on your Earth weight.\n    <\/p>\n  <\/div>\n\n  <form class=\"eco-tool__form\" id=\"eco-planet-gravity-form-83f7b\" novalidate>\n    <div class=\"eco-tool__grid3\">\n      <div class=\"eco-tool__field\">\n        <label class=\"eco-tool__label\" for=\"eco-gravity-weight-83f7b\">Your Earth<br>weight<\/label>\n        <input class=\"eco-tool__input\" id=\"eco-gravity-weight-83f7b\" type=\"number\" min=\"1\" step=\"0.1\" value=\"70\" inputmode=\"decimal\" \/>\n        <div class=\"eco-tool__hint\">Enter your current weight on Earth.<\/div>\n      <\/div>\n\n      <div class=\"eco-tool__field\">\n        <label class=\"eco-tool__label\" for=\"eco-gravity-unit-83f7b\">Weight<br>unit<\/label>\n        <select class=\"eco-tool__input\" id=\"eco-gravity-unit-83f7b\">\n          <option value=\"kg\">Kilograms (kg)<\/option>\n          <option value=\"lb\">Pounds (lb)<\/option>\n        <\/select>\n        <div class=\"eco-tool__hint\">Choose the unit you normally use.<\/div>\n      <\/div>\n\n      <div class=\"eco-tool__field\">\n        <label class=\"eco-tool__label\" for=\"eco-gravity-planet-83f7b\">Highlight<br>planet<\/label>\n        <select class=\"eco-tool__input\" id=\"eco-gravity-planet-83f7b\">\n          <option value=\"Mercury\">Mercury<\/option>\n          <option value=\"Venus\">Venus<\/option>\n          <option value=\"Moon\">Moon<\/option>\n          <option value=\"Mars\">Mars<\/option>\n          <option value=\"Jupiter\">Jupiter<\/option>\n          <option value=\"Saturn\">Saturn<\/option>\n          <option value=\"Uranus\">Uranus<\/option>\n          <option value=\"Neptune\">Neptune<\/option>\n        <\/select>\n        <div class=\"eco-tool__hint\">Used for the highlighted result card below.<\/div>\n      <\/div>\n    <\/div>\n\n    <div class=\"eco-tool__actions\">\n      <button type=\"button\" class=\"wp-element-button eco-tool__btn\" id=\"eco-gravity-calc-83f7b\">Calculate<\/button>\n      <button type=\"button\" class=\"wp-element-button eco-tool__btn eco-tool__btn--ghost\" id=\"eco-gravity-reset-83f7b\">Reset<\/button>\n      <div class=\"eco-tool__error\" id=\"eco-gravity-error-83f7b\" aria-live=\"polite\"><\/div>\n    <\/div>\n  <\/form>\n\n  <div class=\"eco-tool__result\" id=\"eco-gravity-result-83f7b\" hidden>\n    <h3 class=\"eco-tool__subtitle\">Result<\/h3>\n\n    <div class=\"eco-tool__cards\">\n      <div class=\"eco-tool__card\">\n        <div class=\"eco-tool__metric-label\">Highlighted planet<\/div>\n        <div class=\"eco-tool__metric-value\" id=\"eco-gravity-main-83f7b\">\u2014<\/div>\n        <div class=\"eco-tool__metric-sub\" id=\"eco-gravity-main-sub-83f7b\"><\/div>\n      <\/div>\n\n      <div class=\"eco-tool__card\">\n        <div class=\"eco-tool__metric-label\">Compared to Earth<\/div>\n        <div class=\"eco-tool__metric-value\" id=\"eco-gravity-diff-83f7b\">\u2014<\/div>\n        <div class=\"eco-tool__metric-sub\" id=\"eco-gravity-diff-sub-83f7b\"><\/div>\n      <\/div>\n    <\/div>\n\n    <div class=\"eco-tool__card eco-tool__card--wide\">\n      <div class=\"eco-tool__metric-label\">Weight on other worlds<\/div>\n      <div class=\"eco-tool__bars\" id=\"eco-gravity-bars-83f7b\"><\/div>\n      <div class=\"eco-tool__metric-sub eco-tool__muted\" id=\"eco-gravity-tip-83f7b\"><\/div>\n    <\/div>\n\n    <p class=\"eco-tool__note\">\n      Approximate estimate only. This calculator compares surface gravity, assuming the same mass everywhere.\n    <\/p>\n  <\/div>\n\n  <details class=\"eco-tool__details\">\n    <summary class=\"eco-tool__summary\">How we calculate<\/summary>\n    <div class=\"eco-tool__details-body\">\n      <p class=\"eco-tool__text\">\n        We multiply your Earth weight by each world&#8217;s surface gravity factor relative to Earth.\n      <\/p>\n      <ul class=\"eco-tool__list\" id=\"eco-gravity-factors-83f7b\"><\/ul>\n    <\/div>\n  <\/details>\n<\/div>\n\n<style>\n.eco-tool{border:1px solid rgba(0,0,0,.12);border-radius:12px;padding:16px}\n.eco-tool__header{margin-bottom:12px}\n.eco-tool__title{margin:0 0 8px}\n.eco-tool__lead{margin:0;opacity:.9}\n.eco-tool__form{margin-top:12px}\n.eco-tool__grid3{display:grid;grid-template-columns:1fr;gap:16px}\n@media (min-width:860px){.eco-tool__grid3{grid-template-columns:1fr 1fr 1fr}}\n.eco-tool__field{display:flex;flex-direction:column;gap:6px}\n.eco-tool__label{font-weight:600}\n.eco-tool__input{width:100%;height:44px;padding:0 12px;border:1px solid rgba(0,0,0,.20);border-radius:10px;background:#fff;box-sizing:border-box;font:inherit}\n.eco-tool select.eco-tool__input{appearance:none;-webkit-appearance:none;line-height:44px;padding-right:40px;background-image:linear-gradient(45deg,transparent 50%,rgba(0,0,0,.60) 50%),linear-gradient(135deg,rgba(0,0,0,.60) 50%,transparent 50%);background-position:calc(100% - 18px) 50%,calc(100% - 12px) 50%;background-size:6px 6px;background-repeat:no-repeat}\n.eco-tool__hint{font-size:.92em;opacity:.78;min-height:38px}\n.eco-tool__actions{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-top:16px}\n.eco-tool__btn{padding:10px 22px}\n.eco-tool__btn--ghost{background:transparent!important;border:1px solid rgba(0,0,0,.20)!important}\n.eco-tool__btn--ghost:hover,.eco-tool__btn--ghost:focus{background:rgba(0,0,0,.06)!important;border-color:rgba(0,0,0,.35)!important}\n.eco-tool__error{min-height:1.2em;font-weight:600;flex:1 1 240px}\n.eco-tool__result{margin-top:16px}\n.eco-tool__subtitle{margin:0 0 10px}\n.eco-tool__cards{display:grid;gap:10px;grid-template-columns:1fr}\n@media (min-width:860px){.eco-tool__cards{grid-template-columns:1fr 1fr}}\n.eco-tool__card{border:1px solid rgba(0,0,0,.12);border-radius:12px;padding:12px}\n.eco-tool__card--wide{margin-top:10px}\n.eco-tool__metric-label{opacity:.85;font-weight:600}\n.eco-tool__metric-value{font-size:1.6em;font-weight:800;margin-top:6px;line-height:1.1}\n.eco-tool__metric-sub{opacity:.85;margin-top:6px}\n.eco-tool__bars{display:grid;gap:10px;margin-top:12px}\n.eco-tool__barrow{display:grid;grid-template-columns:120px 1fr 90px;gap:10px;align-items:center}\n@media (max-width:480px){.eco-tool__barrow{grid-template-columns:90px 1fr 70px}}\n.eco-tool__barlabel{font-weight:600;opacity:.9}\n.eco-tool__bartrack{border:1px solid rgba(0,0,0,.12);border-radius:999px;height:12px;overflow:hidden;background:rgba(0,0,0,.03)}\n.eco-tool__barfill{height:100%;width:0%;background:rgba(0,0,0,.25)}\n.eco-tool__barval{text-align:right;opacity:.85;white-space:nowrap}\n.eco-tool__note{margin:10px 0 0;opacity:.9}\n.eco-tool__muted{opacity:.8}\n.eco-tool__details{margin-top:14px}\n.eco-tool__summary{cursor:pointer;font-weight:700}\n.eco-tool__details-body{margin-top:10px}\n.eco-tool__text{margin:0 0 10px}\n.eco-tool__list{margin:0;padding-left:18px}\n<\/style>\n\n<script>\n(function(){\n  const S = \"83f7b\";\n  const el = (id) => document.getElementById(id + \"-\" + S);\n\n  const weightEl = el(\"eco-gravity-weight\");\n  const unitEl = el(\"eco-gravity-unit\");\n  const planetEl = el(\"eco-gravity-planet\");\n\n  const calcBtn = el(\"eco-gravity-calc\");\n  const resetBtn = el(\"eco-gravity-reset\");\n  const errorEl = el(\"eco-gravity-error\");\n  const resultEl = el(\"eco-gravity-result\");\n\n  const mainEl = el(\"eco-gravity-main\");\n  const mainSubEl = el(\"eco-gravity-main-sub\");\n  const diffEl = el(\"eco-gravity-diff\");\n  const diffSubEl = el(\"eco-gravity-diff-sub\");\n  const barsEl = el(\"eco-gravity-bars\");\n  const tipEl = el(\"eco-gravity-tip\");\n  const factorsEl = el(\"eco-gravity-factors\");\n\n  const FACTORS = {\n    Mercury: 0.38,\n    Venus: 0.91,\n    Moon: 0.165,\n    Mars: 0.38,\n    Jupiter: 2.34,\n    Saturn: 1.06,\n    Uranus: 0.92,\n    Neptune: 1.19\n  };\n\n  function setError(msg){ errorEl.textContent = msg || \"\"; }\n  function fmt(x){ return (Math.round(x * 10) \/ 10).toLocaleString(undefined,{minimumFractionDigits:1,maximumFractionDigits:1}); }\n\n  function fillFactors(){\n    factorsEl.innerHTML = Object.keys(FACTORS).map(name =>\n      `<li><strong>${name}:<\/strong> ${FACTORS[name]} \u00d7 Earth gravity<\/li>`\n    ).join(\"\");\n  }\n\n  function barRow(label, pct, value){\n    const p = Math.max(0, Math.min(100, pct));\n    return `\n      <div class=\"eco-tool__barrow\">\n        <div class=\"eco-tool__barlabel\">${label}<\/div>\n        <div class=\"eco-tool__bartrack\"><div class=\"eco-tool__barfill\" style=\"width:${p}%;\"><\/div><\/div>\n        <div class=\"eco-tool__barval\">${value}<\/div>\n      <\/div>\n    `;\n  }\n\n  function calculate(){\n    setError(\"\");\n\n    const weight = Number(weightEl.value);\n    const unit = unitEl.value;\n    const selected = planetEl.value;\n\n    if (!Number.isFinite(weight) || weight <= 0){\n      setError(\"Please enter a valid Earth weight.\");\n      resultEl.hidden = true;\n      return;\n    }\n\n    const selectedWeight = weight * FACTORS[selected];\n    const diffPct = ((FACTORS[selected] - 1) * 100);\n\n    mainEl.textContent = `${fmt(selectedWeight)} ${unit}`;\n    mainSubEl.textContent = `Your weight on ${selected}`;\n\n    diffEl.textContent = `${diffPct >= 0 ? \"+\" : \"\"}${fmt(diffPct)}%`;\n    diffSubEl.textContent = `Compared to your Earth weight`;\n\n    const parts = Object.keys(FACTORS).map(name => ({\n      label: name,\n      value: weight * FACTORS[name]\n    })).sort((a,b) => b.value - a.value);\n\n    const max = Math.max(1, parts[0].value);\n    barsEl.innerHTML = parts.map(p => barRow(p.label, (p.value \/ max) * 100, `${fmt(p.value)} ${unit}`)).join(\"\");\n\n    tipEl.textContent =\n      FACTORS[selected] < 1\n        ? `${selected} has weaker gravity than Earth, so you would weigh less there.`\n        : `${selected} has stronger gravity than Earth, so you would weigh more there.`;\n\n    resultEl.hidden = false;\n  }\n\n  function reset(){\n    setError(\"\");\n    weightEl.value = \"70\";\n    unitEl.value = \"kg\";\n    planetEl.value = \"Mars\";\n    resultEl.hidden = true;\n  }\n\n  fillFactors();\n  planetEl.value = \"Mars\";\n  calcBtn.addEventListener(\"click\", calculate);\n  resetBtn.addEventListener(\"click\", reset);\n})();\n<\/script>\n","protected":false},"excerpt":{"rendered":"<p>Planet Gravity Comparison Calculator Compare how much you would weigh on different planets and the Moon based on your Earth weight. Your Earthweight Enter your current weight on Earth. Weightunit&hellip;<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":2295,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_sitemap_exclude":false,"_sitemap_priority":"","_sitemap_frequency":"","footnotes":""},"_links":{"self":[{"href":"https:\/\/science-x.net\/index.php?rest_route=\/wp\/v2\/pages\/2965"}],"collection":[{"href":"https:\/\/science-x.net\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/science-x.net\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/science-x.net\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/science-x.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2965"}],"version-history":[{"count":1,"href":"https:\/\/science-x.net\/index.php?rest_route=\/wp\/v2\/pages\/2965\/revisions"}],"predecessor-version":[{"id":2966,"href":"https:\/\/science-x.net\/index.php?rest_route=\/wp\/v2\/pages\/2965\/revisions\/2966"}],"up":[{"embeddable":true,"href":"https:\/\/science-x.net\/index.php?rest_route=\/wp\/v2\/pages\/2295"}],"wp:attachment":[{"href":"https:\/\/science-x.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2965"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}