{"id":2964,"date":"2025-09-06T05:01:42","date_gmt":"2025-09-06T05:01:42","guid":{"rendered":"https:\/\/garyhengeveld.com\/wordpress\/?p=2964"},"modified":"2026-03-05T15:22:48","modified_gmt":"2026-03-05T15:22:48","slug":"automotive-calculators","status":"publish","type":"post","link":"https:\/\/garyhengeveld.com\/wordpress\/automotive-calculators\/","title":{"rendered":"Automotive Calculators"},"content":{"rendered":"\n<!DOCTYPE html>\n<html lang=\"en\">\n<head>\n  <meta charset=\"UTF-8\">\n  <title>Automotive Calculators<\/title>\n   <style>\n    body {\n      font-family: sans-serif;\n      background: #fff;\n      color: #000;\n      padding: 20px;\n    }\n    h1 {\n      color: #003366;\n      border-bottom: 2px solid #003366;\n      padding-bottom: 5px;\n    }\n    h2 {\n      color: #0055aa;\n      margin-top: 30px;\n    }\n    input, select {\n      margin: 5px;\n      padding: 5px;\n      width: 120px;\n      border: 1px solid #ccc;\n      border-radius: 4px;\n    }\n    button {\n      margin: 10px;\n      padding: 6px 12px;\n      background-color: #0055aa;\n      color: #fff;\n      border: none;\n      border-radius: 4px;\n      cursor: pointer;\n    }\n    button:hover {\n      background-color: #003366;\n    }\n    .calc {\n      margin-bottom: 30px;\n      border-bottom: 1px solid #ccc;\n      padding-bottom: 20px;\n    }\n    label {\n      display: inline-block;\n      width: 220px;\n    }\n    .result {\n      margin-top: 10px;\n      color: #aa0000;\n      font-weight: bold;\n    }\n  <\/style>\n\n<\/head>\n<body>\n  <h1> Automotive Calculators<\/h1>\n\n  <div class=\"calc\">\n    <h2>Engine Displacement<\/h2>\n    <label>Bore (Inches): <input id=\"bore\" type=\"number\"><\/label>\n    <label>Stroke (Inches): <input id=\"stroke\" type=\"number\"><\/label>\n    <label>Cylinders: <input id=\"cylinders\" type=\"number\"><\/label>\n    <button onclick=\"calcDisplacement()\">Calculate<\/button>\n    <div class=\"result\" id=\"dispResult\"><\/div>\n  <\/div>\n\n  <div class=\"calc\">\n    <h2>Compression Ratio<\/h2>\n    <label>Combustion Chamber Volume (cc): <input id=\"chamber\" type=\"number\"><\/label>\n    <label>Clearance Volume (cc): <input id=\"clearance\" type=\"number\"><\/label>\n    <button onclick=\"calcCompression()\">Calculate<\/button>\n    <div class=\"result\" id=\"compResult\"><\/div>\n  <\/div>\n\n  <div class=\"calc\">\n    <h2>Gear Ratio &#038; Speed<\/h2>\n    <label>RPM: <input id=\"rpm\" type=\"number\"><\/label>\n    <label>Gear Ratio: <input id=\"gearRatio\" type=\"number\"><\/label>\n    <label>Final Drive Ratio: <input id=\"finalDrive\" type=\"number\"><\/label>\n    <label>Tire Diameter (in): <input id=\"tireDia\" type=\"number\"><\/label>\n    <button onclick=\"calcSpeed()\">Calculate<\/button>\n    <div class=\"result\" id=\"speedResult\"><\/div>\n  <\/div>\n\n  <div class=\"calc\">\n    <h2>Tire Size Converter<\/h2>\n    <label>Width (mm): <input id=\"tireWidth\" type=\"number\"><\/label>\n    <label>Aspect Ratio (%): <input id=\"aspectRatio\" type=\"number\"><\/label>\n    <label>Rim Diameter (in): <input id=\"rimDia\" type=\"number\"><\/label>\n    <button onclick=\"calcTireSize()\">Convert<\/button>\n    <div class=\"result\" id=\"tireResult\"><\/div>\n  <\/div>\n\n  <div class=\"calc\">\n    <h2>Fuel Consumption<\/h2>\n    <label>MPG: <input id=\"mpg\" type=\"number\"><\/label>\n    <button onclick=\"calcFuel()\">Convert<\/button>\n    <div class=\"result\" id=\"fuelResult\"><\/div>\n  <\/div>\n\n  <div class=\"calc\">\n    <h2>Injector Size<\/h2>\n    <label>Horsepower: <input id=\"injHP\" type=\"number\"><\/label>\n    <label>Fuel Pressure (psi): <input id=\"injPSI\" type=\"number\"><\/label>\n    <button onclick=\"calcInjector()\">Calculate<\/button>\n    <div class=\"result\" id=\"injResult\"><\/div>\n  <\/div>\n\n  <div class=\"calc\">\n    <h2>Horsepower &#x2194; Torque<\/h2>\n    <label>RPM: <input id=\"rpmHT\" type=\"number\"><\/label>\n    <label>Horsepower: <input id=\"hpHT\" type=\"number\"><\/label>\n    <button onclick=\"calcTorque()\">Calculate Torque<\/button>\n    <label>Torque (lb-ft): <input id=\"torqueHT\" type=\"number\"><\/label>\n    <button onclick=\"calcHP()\">Calculate HP<\/button>\n    <div class=\"result\" id=\"htResult\"><\/div>\n  <\/div>\n\n  <div class=\"calc\">\n    <h2>\u00bc Mile Trap Speed<\/h2>\n    <label>Vehicle Weight (lbs): <input id=\"trapWeight\" type=\"number\"><\/label>\n    <label>Horsepower: <input id=\"trapHP\" type=\"number\"><\/label>\n    <button onclick=\"calcTrap()\">Estimate<\/button>\n    <div class=\"result\" id=\"trapResult\"><\/div>\n  <\/div>\n\n  <div class=\"calc\">\n    <h2>BSFC Fuel Flow<\/h2>\n    <label>Horsepower: <input id=\"bsfcHP\" type=\"number\"><\/label>\n    <label>BSFC (lb\/hp\/hr): <input id=\"bsfcVal\" type=\"number\" value=\"0.5\"><\/label>\n    <button onclick=\"calcBSFC()\">Calculate<\/button>\n    <div class=\"result\" id=\"bsfcResult\"><\/div>\n  <\/div>\n\n  <script>\n   function calcDisplacement() {\n  const bore = parseFloat(document.getElementById('bore').value);     \/\/ in inches\n  const stroke = parseFloat(document.getElementById('stroke').value); \/\/ in inches\n  const cyl = parseInt(document.getElementById('cylinders').value);   \/\/ count\n\n  if (bore > 0 && stroke > 0 && cyl > 0) {\n    const disp = (Math.PI \/ 4) * Math.pow(bore, 2) * stroke * cyl;\n    document.getElementById('dispResult').textContent = `Displacement: ${disp.toFixed(2)} Cubicc Inches`;\n  } else {\n    document.getElementById('dispResult').textContent = `Please enter valid bore, stroke, and cylinder count`;\n  }\n}\n\n    function calcCompression() {\n      const chamber = parseFloat(document.getElementById('chamber').value);\n      const clearance = parseFloat(document.getElementById('clearance').value);\n      const ratio = (chamber + clearance) \/ clearance;\n      document.getElementById('compResult').textContent = `Compression Ratio: ${ratio.toFixed(2)}:1`;\n    }\n\n    function calcSpeed() {\n      const rpm = parseFloat(document.getElementById('rpm').value);\n      const gear = parseFloat(document.getElementById('gearRatio').value);\n      const final = parseFloat(document.getElementById('finalDrive').value);\n      const tire = parseFloat(document.getElementById('tireDia').value);\n      const speed = (rpm * tire) \/ (gear * final * 336);\n      document.getElementById('speedResult').textContent = `Speed: ${speed.toFixed(2)} mph`;\n    }\n\n    function calcTireSize() {\n      const width = parseFloat(document.getElementById('tireWidth').value);\n      const aspect = parseFloat(document.getElementById('aspectRatio').value);\n      const rim = parseFloat(document.getElementById('rimDia').value);\n      const sidewall = (width * (aspect \/ 100)) \/ 25.4;\n      const diameter = (2 * sidewall) + rim;\n      document.getElementById('tireResult').textContent = `Overall Diameter: ${diameter.toFixed(2)} in`;\n    }\n\n    function calcFuel() {\n      const mpg = parseFloat(document.getElementById('mpg').value);\n      const l100km = 235.214583 \/ mpg;\n      document.getElementById('fuelResult').textContent = `Fuel Consumption: ${l100km.toFixed(2)} L\/100km`;\n    }\n\n    function calcInjector() {\n      const hp = parseFloat(document.getElementById('injHP').value);\n      const psi = parseFloat(document.getElementById('injPSI').value);\n      const flow = hp * 0.5 \/ (psi \/ 43.5); \/\/ Approximate formula\n      document.getElementById('injResult').textContent = `Required Injector Flow: ${flow.toFixed(2)} lb\/hr`;\n    }\n\n   function calcTorque() {\n  const rpm = parseFloat(document.getElementById('rpmHT').value);\n  const hp = parseFloat(document.getElementById('hpHT').value);\n\n  if (rpm > 0) {\n    const torque = (hp * 5252) \/ rpm;\n    document.getElementById('htResult').textContent = `Torque: ${torque.toFixed(2)} lb-ft`;\n  } else {\n    document.getElementById('htResult').textContent = `RPM must be greater than zero`;\n  }\n}\n\n    function calcHP() {\n      const rpm = parseFloat(document.getElementById('rpmHT').value);\n      const torque = parseFloat(document.getElementById('torqueHT').value);\n      const hp = (torque * rpm) \/ 5252;\n      document.getElementById('htResult').textContent = `Horsepower: ${hp.toFixed(2)} HP`;\n    }\n\n    function calcTrap() {\n      const weight = parseFloat(document.getElementById('trapWeight').value);\n      const hp = parseFloat(document.getElementById('trapHP').value);\n      const speed = Math.sqrt(hp \/ weight) * 234; \/\/ Approximate formula\n      document.getElementById('trapResult').textContent = `Estimated Trap Speed: ${speed.toFixed(2)} mph`;\n    }\n\n    function calcBSFC() {\n      const hp = parseFloat(document.getElementById('bsfcHP').value);\n      const bsfc = parseFloat(document.getElementById('bsfcVal').value);\n      const fuelFlow = hp * bsfc;\n      document.getElementById('bsfcResult').textContent = `Fuel Flow: ${fuelFlow.toFixed(2)} lb\/hr`;\n    }\n  <\/script>\n<\/body>\n<\/html>\n","protected":false},"excerpt":{"rendered":"<p>Automotive Calculators Automotive Calculators Engine Displacement Bore (Inches): Stroke (Inches): Cylinders: Calculate Compression Ratio Combustion Chamber Volume (cc): Clearance Volume (cc): Calculate Gear Ratio &#038; Speed RPM: Gear Ratio: Final Drive Ratio: Tire Diameter (in): Calculate Tire Size Converter Width (mm): Aspect Ratio (%): Rim Diameter (in): Convert Fuel Consumption MPG: Convert Injector Size Horsepower: [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":2973,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[21,106],"tags":[],"class_list":["post-2964","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-programming","category-software"],"_links":{"self":[{"href":"https:\/\/garyhengeveld.com\/wordpress\/wp-json\/wp\/v2\/posts\/2964","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/garyhengeveld.com\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/garyhengeveld.com\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/garyhengeveld.com\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/garyhengeveld.com\/wordpress\/wp-json\/wp\/v2\/comments?post=2964"}],"version-history":[{"count":3,"href":"https:\/\/garyhengeveld.com\/wordpress\/wp-json\/wp\/v2\/posts\/2964\/revisions"}],"predecessor-version":[{"id":3221,"href":"https:\/\/garyhengeveld.com\/wordpress\/wp-json\/wp\/v2\/posts\/2964\/revisions\/3221"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/garyhengeveld.com\/wordpress\/wp-json\/wp\/v2\/media\/2973"}],"wp:attachment":[{"href":"https:\/\/garyhengeveld.com\/wordpress\/wp-json\/wp\/v2\/media?parent=2964"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/garyhengeveld.com\/wordpress\/wp-json\/wp\/v2\/categories?post=2964"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/garyhengeveld.com\/wordpress\/wp-json\/wp\/v2\/tags?post=2964"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}