{"id":2251,"date":"2026-01-21T22:27:19","date_gmt":"2026-01-21T20:27:19","guid":{"rendered":"https:\/\/nature-o.net\/?page_id=2251"},"modified":"2026-02-02T17:35:19","modified_gmt":"2026-02-02T15:35:19","slug":"tree-co%e2%82%82-offset-oxygen-estimator","status":"publish","type":"page","link":"https:\/\/nature-o.net\/?page_id=2251","title":{"rendered":"Tree CO\u2082 Offset &amp; Oxygen Estimator"},"content":{"rendered":"\n<div class=\"eco-tool wp-block-group\" id=\"eco-tool-trees-7a1c3\">\n  <div class=\"eco-tool__header\">\n    <h2 class=\"eco-tool__title\">Tree CO\u2082 Offset &#038; Oxygen Estimator<\/h2>\n    <p class=\"eco-tool__lead\">\n      A fun estimate of how much CO\u2082 trees could capture and how much oxygen they could produce over time (toy model).\n    <\/p>\n  <\/div>\n\n  <form class=\"eco-tool__form\" novalidate>\n    <div class=\"eco-tool__grid2\">\n      <div class=\"eco-tool__field\">\n        <label class=\"eco-tool__label\" for=\"eco-tr-n-7a1c3\">Number of trees<\/label>\n        <input class=\"eco-tool__input\" id=\"eco-tr-n-7a1c3\" type=\"number\" min=\"0\" step=\"1\" value=\"10\" inputmode=\"numeric\">\n        <div class=\"eco-tool__hint\">Example: 1\u2013100 trees.<\/div>\n      <\/div>\n\n      <div class=\"eco-tool__field\">\n        <label class=\"eco-tool__label\" for=\"eco-tr-years-7a1c3\">Time period<\/label>\n        <select class=\"eco-tool__input\" id=\"eco-tr-years-7a1c3\">\n          <option value=\"5\">5 years<\/option>\n          <option value=\"10\" selected>10 years<\/option>\n          <option value=\"20\">20 years<\/option>\n          <option value=\"30\">30 years<\/option>\n        <\/select>\n        <div class=\"eco-tool__hint\">More time = more CO\u2082 captured and oxygen produced (roughly).<\/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-tr-calc-7a1c3\">Calculate<\/button>\n      <button type=\"button\" class=\"wp-element-button eco-tool__btn eco-tool__btn--ghost\" id=\"eco-tr-reset-7a1c3\">Reset<\/button>\n      <div class=\"eco-tool__error\" id=\"eco-tr-error-7a1c3\" aria-live=\"polite\"><\/div>\n    <\/div>\n  <\/form>\n\n  <div class=\"eco-tool__result\" id=\"eco-tr-result-7a1c3\" 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\">Estimated CO\u2082 captured<\/div>\n        <div class=\"eco-tool__metric-value\" id=\"eco-tr-co2-7a1c3\">\u2014<\/div>\n        <div class=\"eco-tool__metric-sub\" id=\"eco-tr-co2sub-7a1c3\">\u2014<\/div>\n      <\/div>\n\n      <div class=\"eco-tool__card\">\n        <div class=\"eco-tool__metric-label\">Estimated oxygen produced<\/div>\n        <div class=\"eco-tool__metric-value\" id=\"eco-tr-o2-7a1c3\">\u2014<\/div>\n        <div class=\"eco-tool__metric-sub\" id=\"eco-tr-o2sub-7a1c3\">\u2014<\/div>\n      <\/div>\n    <\/div>\n\n    <div class=\"eco-tool__card eco-tool__card--wide\">\n      <div class=\"eco-tool__metric-label\">\u201cHow many people could this oxygen support?\u201d<\/div>\n      <div class=\"eco-tool__metric-value\" id=\"eco-tr-people-7a1c3\">\u2014<\/div>\n      <div class=\"eco-tool__metric-sub\" id=\"eco-tr-peoplesub-7a1c3\">\u2014<\/div>\n    <\/div>\n\n    <p class=\"eco-tool__note\">\n      Reality check: trees don\u2019t \u201cproduce oxygen for you personally\u201d. Earth\u2019s oxygen cycle is huge and complex.\n      This is just a playful back-of-the-envelope estimate.\n    <\/p>\n  <\/div>\n\n  <details class=\"eco-tool__details\">\n    <summary class=\"eco-tool__summary\">Assumptions (toy model)<\/summary>\n    <div class=\"eco-tool__details-body\">\n      <p class=\"eco-tool__text\" id=\"eco-tr-assume-7a1c3\"><\/p>\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__title{margin:0 0 8px}\n.eco-tool__lead{margin:0;opacity:.9}\n.eco-tool__grid2{display:grid;grid-template-columns:1fr;gap:16px;margin-top:12px}\n@media(min-width:860px){.eco-tool__grid2{grid-template-columns: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,.2);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,.6) 50%),linear-gradient(135deg,rgba(0,0,0,.6) 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:34px}\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,.2)!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:1.7em;font-weight:900;margin-top:6px;line-height:1.1}\n.eco-tool__metric-sub{opacity:.85;margin-top:6px}\n.eco-tool__note{margin:10px 0 0;opacity:.9}\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;opacity:.95}\n<\/style>\n\n<script>\n(function(){\n  const S=\"7a1c3\";\n  const el=(id)=>document.getElementById(id+\"-\"+S);\n\n  const nEl=el(\"eco-tr-n\");\n  const yEl=el(\"eco-tr-years\");\n  const calcBtn=el(\"eco-tr-calc\");\n  const resetBtn=el(\"eco-tr-reset\");\n  const errEl=el(\"eco-tr-error\");\n\n  const resEl=el(\"eco-tr-result\");\n  const co2El=el(\"eco-tr-co2\");\n  const co2SubEl=el(\"eco-tr-co2sub\");\n  const o2El=el(\"eco-tr-o2\");\n  const o2SubEl=el(\"eco-tr-o2sub\");\n  const peopleEl=el(\"eco-tr-people\");\n  const peopleSubEl=el(\"eco-tr-peoplesub\");\n  const assumeEl=el(\"eco-tr-assume\");\n\n  function setErr(m){ errEl.textContent=m||\"\"; }\n  function n(v){ return Number(v); }\n\n  function fmtKg(x){\n    const v=Math.round(x);\n    return v.toLocaleString() + \" kg\";\n  }\n  function fmtTons(x){\n    const v=Math.round(x*100)\/100;\n    return v.toLocaleString(undefined,{minimumFractionDigits:2,maximumFractionDigits:2}) + \" t\";\n  }\n  function fmt1(x){\n    const v=Math.round(x*10)\/10;\n    return v.toLocaleString(undefined,{minimumFractionDigits:1,maximumFractionDigits:1});\n  }\n\n  \/\/ Toy averages:\n  const KG_CO2_PER_TREE_PER_YEAR = 10;   \/\/ playful average\n  const KG_O2_PER_TREE_PER_YEAR  = 118;  \/\/ playful average\n  const KG_O2_PER_PERSON_PER_YEAR = 550; \/\/ playful average\n\n  function fillAssumptions(){\n    assumeEl.textContent =\n      `Assumes 1 tree captures ~${KG_CO2_PER_TREE_PER_YEAR} kg CO\u2082\/year and produces ~${KG_O2_PER_TREE_PER_YEAR} kg O\u2082\/year (toy averages). ` +\n      `Also assumes 1 person consumes ~${KG_O2_PER_PERSON_PER_YEAR} kg O\u2082\/year (toy average). Real values vary massively by species, size, age, climate, and survival rate.`;\n  }\n\n  calcBtn.addEventListener(\"click\", function(){\n    setErr(\"\");\n    const trees=n(nEl.value);\n    const years=n(yEl.value);\n    if(!Number.isFinite(trees) || trees<0){ setErr(\"Please enter number of trees (0 or more).\"); resEl.hidden=true; return; }\n\n    const kgCO2 = trees * years * KG_CO2_PER_TREE_PER_YEAR;\n    const tCO2 = kgCO2 \/ 1000;\n\n    const kgO2 = trees * years * KG_O2_PER_TREE_PER_YEAR;\n    const people = kgO2 \/ KG_O2_PER_PERSON_PER_YEAR;\n\n    co2El.textContent = fmtTons(tCO2) + \" CO\u2082\";\n    co2SubEl.textContent = `${fmtKg(kgCO2)} CO\u2082 over ${years} years (toy estimate).`;\n\n    o2El.textContent = fmtTons(kgO2\/1000) + \" O\u2082\";\n    o2SubEl.textContent = `${fmtKg(kgO2)} O\u2082 over ${years} years (toy estimate).`;\n\n    peopleEl.textContent = `${fmt1(people)} people`;\n    peopleSubEl.textContent = `Based on ~${KG_O2_PER_PERSON_PER_YEAR} kg O\u2082\/year per person (toy average).`;\n\n    resEl.hidden=false;\n  });\n\n  resetBtn.addEventListener(\"click\", function(){\n    setErr(\"\");\n    nEl.value=\"10\";\n    yEl.value=\"10\";\n    resEl.hidden=true;\n  });\n\n  fillAssumptions();\n})();\n<\/script>\n\n","protected":false},"excerpt":{"rendered":"<p>Tree CO\u2082 Offset &#038; Oxygen Estimator A fun estimate of how much CO\u2082 trees could capture and how much oxygen they could produce over time (toy model). Number of trees&hellip;<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":2432,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_sitemap_exclude":false,"_sitemap_priority":"","_sitemap_frequency":"","footnotes":""},"_links":{"self":[{"href":"https:\/\/nature-o.net\/index.php?rest_route=\/wp\/v2\/pages\/2251"}],"collection":[{"href":"https:\/\/nature-o.net\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/nature-o.net\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/nature-o.net\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/nature-o.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2251"}],"version-history":[{"count":4,"href":"https:\/\/nature-o.net\/index.php?rest_route=\/wp\/v2\/pages\/2251\/revisions"}],"predecessor-version":[{"id":2270,"href":"https:\/\/nature-o.net\/index.php?rest_route=\/wp\/v2\/pages\/2251\/revisions\/2270"}],"up":[{"embeddable":true,"href":"https:\/\/nature-o.net\/index.php?rest_route=\/wp\/v2\/pages\/2432"}],"wp:attachment":[{"href":"https:\/\/nature-o.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2251"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}