{"id":696,"date":"2026-05-31T20:24:33","date_gmt":"2026-05-31T18:24:33","guid":{"rendered":"https:\/\/e-car.day\/?page_id=696"},"modified":"2026-05-31T20:24:34","modified_gmt":"2026-05-31T18:24:34","slug":"ev-charging-cost-calculator","status":"publish","type":"page","link":"https:\/\/e-car.day\/?page_id=696","title":{"rendered":"EV Charging Cost Calculator"},"content":{"rendered":"\n<div class=\"eco-tool wp-block-group\" id=\"ev-charge-calc-a91x\">\n  <div class=\"eco-tool__header\">\n    <h2 class=\"eco-tool__title\">EV Charging Cost Calculator<\/h2>\n    <p class=\"eco-tool__lead\">\n      Estimate how much it costs to charge your electric vehicle at home or at a charging station.\n    <\/p>\n  <\/div>\n\n  <form class=\"eco-tool__form\" id=\"ev-charge-form-a91x\" novalidate>\n    <div class=\"eco-tool__grid3\">\n\n      <!-- Battery size -->\n      <div class=\"eco-tool__field\">\n        <label class=\"eco-tool__label\" for=\"ev-battery-a91x\">\n          Battery size<br>(kWh)\n        <\/label>\n\n        <input\n          class=\"eco-tool__input\"\n          id=\"ev-battery-a91x\"\n          type=\"number\"\n          min=\"1\"\n          step=\"1\"\n          value=\"75\"\n          inputmode=\"decimal\"\n        \/>\n\n        <div class=\"eco-tool__hint\">\n          Example: Tesla Model 3 Long Range \u2248 75 kWh.\n        <\/div>\n      <\/div>\n\n      <!-- Current battery -->\n      <div class=\"eco-tool__field\">\n        <label class=\"eco-tool__label\" for=\"ev-current-a91x\">\n          Current battery<br>level (%)\n        <\/label>\n\n        <input\n          class=\"eco-tool__input\"\n          id=\"ev-current-a91x\"\n          type=\"number\"\n          min=\"0\"\n          max=\"100\"\n          step=\"1\"\n          value=\"20\"\n          inputmode=\"numeric\"\n        \/>\n\n        <div class=\"eco-tool__hint\">\n          Current state of charge.\n        <\/div>\n      <\/div>\n\n      <!-- Target battery -->\n      <div class=\"eco-tool__field\">\n        <label class=\"eco-tool__label\" for=\"ev-target-a91x\">\n          Target battery<br>level (%)\n        <\/label>\n\n        <input\n          class=\"eco-tool__input\"\n          id=\"ev-target-a91x\"\n          type=\"number\"\n          min=\"1\"\n          max=\"100\"\n          step=\"1\"\n          value=\"80\"\n          inputmode=\"numeric\"\n        \/>\n\n        <div class=\"eco-tool__hint\">\n          Recommended daily charging is often 80\u201390%.\n        <\/div>\n      <\/div>\n\n      <!-- Electricity price -->\n      <div class=\"eco-tool__field\">\n        <label class=\"eco-tool__label\" for=\"ev-price-a91x\">\n          Electricity price<br>($\/kWh)\n        <\/label>\n\n        <input\n          class=\"eco-tool__input\"\n          id=\"ev-price-a91x\"\n          type=\"number\"\n          min=\"0\"\n          step=\"0.01\"\n          value=\"0.15\"\n          inputmode=\"decimal\"\n        \/>\n\n        <div class=\"eco-tool__hint\">\n          Your home or charging station electricity price.\n        <\/div>\n      <\/div>\n\n      <!-- Efficiency -->\n      <div class=\"eco-tool__field\">\n        <label class=\"eco-tool__label\" for=\"ev-efficiency-a91x\">\n          Charging<br>efficiency (%)\n        <\/label>\n\n        <input\n          class=\"eco-tool__input\"\n          id=\"ev-efficiency-a91x\"\n          type=\"number\"\n          min=\"50\"\n          max=\"100\"\n          step=\"1\"\n          value=\"90\"\n          inputmode=\"numeric\"\n        \/>\n\n        <div class=\"eco-tool__hint\">\n          Charging losses are normal (usually 85\u201395%).\n        <\/div>\n      <\/div>\n\n      <!-- Consumption -->\n      <div class=\"eco-tool__field\">\n        <label class=\"eco-tool__label\" for=\"ev-consumption-a91x\">\n          EV consumption<br>(kWh\/100 km)\n        <\/label>\n\n        <input\n          class=\"eco-tool__input\"\n          id=\"ev-consumption-a91x\"\n          type=\"number\"\n          min=\"1\"\n          step=\"0.1\"\n          value=\"18\"\n          inputmode=\"decimal\"\n        \/>\n\n        <div class=\"eco-tool__hint\">\n          Used to estimate driving cost.\n        <\/div>\n      <\/div>\n\n    <\/div>\n\n    <div class=\"eco-tool__actions\">\n      <button type=\"button\" class=\"wp-element-button eco-tool__btn\" id=\"ev-calc-a91x\">\n        Calculate\n      <\/button>\n\n      <button type=\"button\" class=\"wp-element-button eco-tool__btn eco-tool__btn--ghost\" id=\"ev-reset-a91x\">\n        Reset\n      <\/button>\n\n      <div class=\"eco-tool__error\" id=\"ev-error-a91x\"><\/div>\n    <\/div>\n  <\/form>\n\n  <div class=\"eco-tool__result\" id=\"ev-result-a91x\" hidden>\n\n    <div class=\"eco-tool__cards\">\n\n      <div class=\"eco-tool__card\">\n        <div class=\"eco-tool__metric-label\">Energy needed<\/div>\n        <div class=\"eco-tool__metric-value\" id=\"ev-energy-a91x\">\u2014<\/div>\n        <div class=\"eco-tool__metric-sub\">\n          Estimated electricity added to the battery.\n        <\/div>\n      <\/div>\n\n      <div class=\"eco-tool__card\">\n        <div class=\"eco-tool__metric-label\">Charging cost<\/div>\n        <div class=\"eco-tool__metric-value\" id=\"ev-cost-a91x\">\u2014<\/div>\n        <div class=\"eco-tool__metric-sub\">\n          Approximate charging session cost.\n        <\/div>\n      <\/div>\n\n      <div class=\"eco-tool__card\">\n        <div class=\"eco-tool__metric-label\">Full battery cost<\/div>\n        <div class=\"eco-tool__metric-value\" id=\"ev-fullcost-a91x\">\u2014<\/div>\n        <div class=\"eco-tool__metric-sub\">\n          Estimated cost for a full 0\u2013100% charge.\n        <\/div>\n      <\/div>\n\n      <div class=\"eco-tool__card\">\n        <div class=\"eco-tool__metric-label\">Estimated driving cost<\/div>\n        <div class=\"eco-tool__metric-value\" id=\"ev-drivecost-a91x\">\u2014<\/div>\n        <div class=\"eco-tool__metric-sub\">\n          Approximate electricity cost per 100 km.\n        <\/div>\n      <\/div>\n\n    <\/div>\n\n    <p class=\"eco-tool__note\">\n      Approximate estimate only. Actual charging costs vary by weather, charger type, battery condition, and electricity tariffs.\n    <\/p>\n\n  <\/div>\n\n  <details class=\"eco-tool__details\">\n    <summary class=\"eco-tool__summary\">How we calculate<\/summary>\n\n    <div class=\"eco-tool__details-body\">\n      <p class=\"eco-tool__text\">\n        Charging cost is based on battery size, charge percentage difference, electricity price, and charging efficiency losses.\n      <\/p>\n\n      <ul class=\"eco-tool__list\">\n        <li>Energy needed = battery size \u00d7 charge difference<\/li>\n        <li>Actual grid energy = battery energy \u00f7 charging efficiency<\/li>\n        <li>Charging cost = grid energy \u00d7 electricity price<\/li>\n        <li>Driving cost = EV consumption \u00d7 electricity price<\/li>\n      <\/ul>\n    <\/div>\n  <\/details>\n<\/div>\n\n<style>\n.eco-tool{\n  border:1px solid rgba(0,0,0,.12);\n  border-radius:12px;\n  padding:16px;\n}\n\n.eco-tool__header{\n  margin-bottom:12px;\n}\n\n.eco-tool__title{\n  margin:0 0 8px;\n}\n\n.eco-tool__lead{\n  margin:0;\n  opacity:.9;\n}\n\n.eco-tool__form{\n  margin-top:12px;\n}\n\n.eco-tool__grid3{\n  display:grid;\n  grid-template-columns:1fr;\n  gap:16px;\n}\n\n@media (min-width:860px){\n  .eco-tool__grid3{\n    grid-template-columns:1fr 1fr 1fr;\n  }\n}\n\n.eco-tool__field{\n  display:flex;\n  flex-direction:column;\n  gap:6px;\n}\n\n.eco-tool__label{\n  font-weight:600;\n}\n\n.eco-tool__input{\n  width:100%;\n  height:44px;\n  padding:0 12px;\n  border:1px solid rgba(0,0,0,.20);\n  border-radius:10px;\n  background:#fff;\n  box-sizing:border-box;\n  font:inherit;\n}\n\n.eco-tool__hint{\n  font-size:.92em;\n  opacity:.78;\n  min-height:38px;\n}\n\n.eco-tool__actions{\n  display:flex;\n  flex-wrap:wrap;\n  gap:10px;\n  align-items:center;\n  margin-top:16px;\n}\n\n.eco-tool__btn{\n  padding:10px 22px;\n}\n\n.eco-tool__btn--ghost{\n  background:transparent !important;\n  border:1px solid rgba(0,0,0,.20) !important;\n}\n\n.eco-tool__btn--ghost:hover,\n.eco-tool__btn--ghost:focus{\n  background:rgba(0,0,0,.06) !important;\n  border-color:rgba(0,0,0,.35) !important;\n}\n\n.eco-tool__error{\n  min-height:1.2em;\n  font-weight:600;\n  flex:1 1 240px;\n}\n\n.eco-tool__result{\n  margin-top:18px;\n}\n\n.eco-tool__cards{\n  display:grid;\n  gap:10px;\n  grid-template-columns:1fr;\n}\n\n@media (min-width:860px){\n  .eco-tool__cards{\n    grid-template-columns:1fr 1fr;\n  }\n}\n\n.eco-tool__card{\n  border:1px solid rgba(0,0,0,.12);\n  border-radius:12px;\n  padding:12px;\n}\n\n.eco-tool__metric-label{\n  opacity:.85;\n  font-weight:600;\n}\n\n.eco-tool__metric-value{\n  font-size:1.7em;\n  font-weight:800;\n  margin-top:6px;\n  line-height:1.1;\n}\n\n.eco-tool__metric-sub{\n  opacity:.85;\n  margin-top:6px;\n}\n\n.eco-tool__note{\n  margin-top:12px;\n  opacity:.9;\n}\n\n.eco-tool__details{\n  margin-top:16px;\n}\n\n.eco-tool__summary{\n  cursor:pointer;\n  font-weight:700;\n}\n\n.eco-tool__details-body{\n  margin-top:10px;\n}\n\n.eco-tool__text{\n  margin:0 0 10px;\n}\n\n.eco-tool__list{\n  margin:0;\n  padding-left:18px;\n}\n<\/style>\n\n<script>\n(function(){\n\n  const S = \"a91x\";\n\n  const el = (id) => document.getElementById(id + \"-\" + S);\n\n  const batteryEl = el(\"ev-battery\");\n  const currentEl = el(\"ev-current\");\n  const targetEl = el(\"ev-target\");\n  const priceEl = el(\"ev-price\");\n  const efficiencyEl = el(\"ev-efficiency\");\n  const consumptionEl = el(\"ev-consumption\");\n\n  const calcBtn = el(\"ev-calc\");\n  const resetBtn = el(\"ev-reset\");\n\n  const errorEl = el(\"ev-error\");\n  const resultEl = el(\"ev-result\");\n\n  const energyEl = el(\"ev-energy\");\n  const costEl = el(\"ev-cost\");\n  const fullCostEl = el(\"ev-fullcost\");\n  const driveCostEl = el(\"ev-drivecost\");\n\n  function setError(msg){\n    errorEl.textContent = msg || \"\";\n  }\n\n  function fmt(x){\n    return Number(x).toLocaleString(undefined,{\n      minimumFractionDigits:1,\n      maximumFractionDigits:1\n    });\n  }\n\n  function calculate(){\n\n    setError(\"\");\n\n    const battery = Number(batteryEl.value);\n    const current = Number(currentEl.value);\n    const target = Number(targetEl.value);\n    const price = Number(priceEl.value);\n    const efficiency = Number(efficiencyEl.value) \/ 100;\n    const consumption = Number(consumptionEl.value);\n\n    if(\n      !battery || battery <= 0 ||\n      current < 0 || current > 100 ||\n      target <= current || target > 100 ||\n      !price || price < 0 ||\n      efficiency <= 0 ||\n      !consumption || consumption <= 0\n    ){\n      setError(\"Please enter valid values.\");\n      resultEl.hidden = true;\n      return;\n    }\n\n    const batteryDelta = (target - current) \/ 100;\n\n    const energyNeeded = battery * batteryDelta;\n\n    const gridEnergy = energyNeeded \/ efficiency;\n\n    const chargingCost = gridEnergy * price;\n\n    const fullBatteryCost = (battery \/ efficiency) * price;\n\n    const drivingCost = consumption * price;\n\n    energyEl.textContent = fmt(energyNeeded) + \" kWh\";\n    costEl.textContent = \"$\" + fmt(chargingCost);\n    fullCostEl.textContent = \"$\" + fmt(fullBatteryCost);\n    driveCostEl.textContent = \"$\" + fmt(drivingCost) + \" \/ 100 km\";\n\n    resultEl.hidden = false;\n  }\n\n  function reset(){\n\n    setError(\"\");\n\n    batteryEl.value = \"75\";\n    currentEl.value = \"20\";\n    targetEl.value = \"80\";\n    priceEl.value = \"0.15\";\n    efficiencyEl.value = \"90\";\n    consumptionEl.value = \"18\";\n\n    resultEl.hidden = true;\n  }\n\n  calcBtn.addEventListener(\"click\", calculate);\n  resetBtn.addEventListener(\"click\", reset);\n\n})();\n<\/script>\n","protected":false},"excerpt":{"rendered":"<p>EV Charging Cost Calculator Estimate how much it costs to charge your electric vehicle at home or at a charging station. Battery size(kWh) Example: Tesla Model 3 Long Range \u2248&hellip;<\/p>\n","protected":false},"author":25,"featured_media":0,"parent":652,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_sitemap_exclude":false,"_sitemap_priority":"","_sitemap_frequency":"","footnotes":""},"_links":{"self":[{"href":"https:\/\/e-car.day\/index.php?rest_route=\/wp\/v2\/pages\/696"}],"collection":[{"href":"https:\/\/e-car.day\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/e-car.day\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/e-car.day\/index.php?rest_route=\/wp\/v2\/users\/25"}],"replies":[{"embeddable":true,"href":"https:\/\/e-car.day\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=696"}],"version-history":[{"count":1,"href":"https:\/\/e-car.day\/index.php?rest_route=\/wp\/v2\/pages\/696\/revisions"}],"predecessor-version":[{"id":697,"href":"https:\/\/e-car.day\/index.php?rest_route=\/wp\/v2\/pages\/696\/revisions\/697"}],"up":[{"embeddable":true,"href":"https:\/\/e-car.day\/index.php?rest_route=\/wp\/v2\/pages\/652"}],"wp:attachment":[{"href":"https:\/\/e-car.day\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=696"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}