CordialCalc/CordialCalc.html at main · LondonRain/CordialCalc · GitHub

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<!DOCTYPE html>
<html lang="de">

<head>
  <meta charset="UTF-8">
  <title>Sugar Dilution Calculator</title>
  <style>
    body {
      font-family: Arial, sans-serif;
      margin: 20px;
    }

    h1 {
      margin-bottom: 10px;
    }

    h2 {
      margin-top: 35px;
      margin-bottom: 10px;
    }

    .info {
      border: 1px solid #ccc;
      color: #3a3a3a;
      background: #f9f9f9;
      padding: 5px 15px;
      margin-top: 20px;
      border-radius: 6px;
      font-size: 0.9em;
      max-width: 600px;
    }

    .info #infoemoji{
       font-size: xx-large;
       padding-right: 10px;
    }

    .row {
      display: flex;
      align-items: center;
      margin-bottom: 10px;
    }

    .row label {
      width: 130px;
    }

    .row input {
      text-align: right;
      direction: rtl;
      padding: 5px;
      width: 100px;
      margin-right: 30px;
    }

    table#results{
      border-collapse: collapse;
      margin-top: 20px;
      width: auto;
    }

    table#results th,
    table#results td {
      border: 1px solid #ccc;
      padding: 5px 10px;
      text-align: left;
    }

    table th {
      background: #f0f0f0;
    }

    .section-divider {
      margin-top: 20px;
      border-top: 2px solid #ddd;
      padding-top: 10px;
    }

    #copyLink {
      margin-top: 20px;
    }

    .error {
      color: red;
      margin-bottom: 20px;
    }
  </style>
</head>

<body>
  <h1>Sugar Dilution Calculator</h1>
  <div class="info">
    <table>
      <tbody>
        <tr>
          <td id="infoemoji">ℹ️</td>
          <td>
            <p>
              This calculator computes how much sugar and water must be added as a
              <a href="https://en.wikipedia.org/w/index.php?title=Syrup#Simple_sugar_syrups" target="_blank">syrup</a>
              to dilute an alcoholic liquid to a desired alcohol and sugar content. It can be used to adjust an
              <a href="https://en.wikipedia.org/w/index.php?title=Maceration" target="_blank">alcohol-fruit-macerate</a>
              to a desired target ABV and sugar content to create a
              <a href="https://en.wikipedia.org/wiki/Liqueur" target="_blank">liqueur</a>.
            </p>
            <p>It assumes that <b>1 g sugar increases the volume by 0.63 ml</b> – an approximation from typical density
              tables. Also it simplifies by assuming the input volume does not already contain sugar - so possible sugar
              from macerated fruits is not considered.</p>
            <p>The syrup does not need to be boiled, just heated until the sugar dissolves. It should cool to room
              temperature before using it.</p>
          </td>
        </tr>
      </tbody>
    </table>

  </div>

  <h2>Input</h2>
  <div class="row">
    <label>Volume (ml):</label>
    <input id="inputVolume" type="number" min="0">
    <label>ABV (%):</label>
    <input id="inputAbv" type="number" step="0.1" min="0">
  </div>

  <h2>Target</h2>
  <div class="row">
    <label>Target ABV (%):</label>
    <input id="targetAbv" type="number" step="0.5" min="0">
    <label>Target sugar (g/l):</label>
    <input id="targetSugar" type="number" step="1" min="0">
  </div>

  <h2>Results</h2>
  <table id="results">
    <tbody></tbody>
  </table>

  <button id="copyLink">Copy Link</button>

  <script>
    // Constant: Sugar volume factor (1 g sugar adds ~0.63 ml to volume)
    const SUGAR_VOLUME_FACTOR = 0.63;

    // Attach wheel scrolling for number inputs
    document.addEventListener('wheel', function (e) {
      if (document.activeElement.type === "number" && document.activeElement === e.target) {
        e.preventDefault();
        let input = document.activeElement;
        let step = parseFloat(input.step) || 1;
        let min = parseFloat(input.min) || 0;
        let value = parseFloat(input.value) || 0;
        if (e.deltaY < 0) { value += step; } else { value -= step; }
        if (value >= min) input.value = value;
        calculate();
      }
    }, { passive: false });

    // Parse URL params into inputs
    function loadParams() {
      const params = new URLSearchParams(window.location.search);
      if (params.has("vol")) document.getElementById("inputVolume").value = params.get("vol");
      if (params.has("abv")) document.getElementById("inputAbv").value = params.get("abv");
      if (params.has("abvT")) document.getElementById("targetAbv").value = params.get("abvT");
      if (params.has("sugarT")) document.getElementById("targetSugar").value = params.get("sugarT");
    }

    // Save inputs into URL
    function saveParams() {
      const params = new URLSearchParams();
      let v = document.getElementById("inputVolume").value;
      let a = document.getElementById("inputAbv").value;
      let at = document.getElementById("targetAbv").value;
      let st = document.getElementById("targetSugar").value;
      if (v) params.set("vol", v);
      if (a) params.set("abv", a);
      if (at) params.set("abvT", at);
      if (st) params.set("sugarT", st);
      const newUrl = window.location.pathname + "?" + params.toString();
      history.replaceState({}, "", newUrl);
    }

    // Perform calculation
    function calculate() {
      const inputVolume = parseFloat(document.getElementById("inputVolume").value);
      const inputAbv = parseFloat(document.getElementById("inputAbv").value);
      const targetAbv = parseFloat(document.getElementById("targetAbv").value);
      const targetSugar = parseFloat(document.getElementById("targetSugar").value);

      const resultsBody = document.querySelector("#results tbody");
      resultsBody.innerHTML = "";

      // Check inputs
      if (isNaN(inputVolume) || isNaN(inputAbv) || isNaN(targetAbv) || isNaN(targetSugar)) {
        resultsBody.innerHTML = `<div class="error">❌ Please correctly fill in all fields.</div>`;
        return;
      }
      if (inputVolume <= 0) {
        resultsBody.innerHTML = `<div class="error">❌ Input volume must be positive.</div>`;
        return;
      }
      if (inputAbv <= 0) {
        resultsBody.innerHTML = `<div class="error">❌ Input ABV must be positive.</div>`;
        return;
      }
      if (targetAbv <= 0) {
        resultsBody.innerHTML = `<div class="error">❌ Target ABV must be positive.</div>`;
        return;
      }
      if (targetAbv > inputAbv) {
        resultsBody.innerHTML = `<div class="error">❌ Target ABV must not be greater than input ABV.</div>`;
        return;
      }
      if (targetSugar < 0) {
        resultsBody.innerHTML = `<div class="error">❌ Target sugar must be positive.</div>`;
        return;
      }

      // Absolute alcohol in ml
      const alcInMl = inputVolume * (inputAbv / 100);

      // Final required volume to reach target ABV
      const finalVolume = alcInMl / (targetAbv / 100);

      // Needed sugar in g (based on g/l * volume)
      const neededSugarInG = (targetSugar / 1000) * finalVolume;
      const neededSugarInMl = neededSugarInG * SUGAR_VOLUME_FACTOR;

      // Syrup volume (sugar displacement + water)
      const neededWater = finalVolume - inputVolume - neededSugarInMl;
      const syrupVolume = neededWater + neededSugarInMl;
      const ratio = (neededSugarInG / neededWater).toFixed(2);

      // Check output
      if (neededWater < 0) {
        resultsBody.innerHTML = `<div class="error">❌ Required water would be negative.</div>`;
        return;
      }

      // Results table
      resultsBody.innerHTML = `
        <tr><th colspan="2">Syrup data</th></tr>
        <tr><td>Sugar</td><td>${Math.round(neededSugarInG)} g</td></tr>
        <tr><td>Water</td><td>${Math.round(neededWater)} g</td></tr>
        <tr><td>Syrup volume</td><td>${Math.round(syrupVolume)} ml</td></tr>
        <tr><td>Syrup sugar:water ratio</td><td>${ratio}:1</td></tr>
        <tr class="section-divider"><th colspan="2">Final mixture</th></tr>
        <tr><td>Total volume</td><td>${Math.round(finalVolume)} ml</td></tr>
        <tr><td>ABV</td><td>${targetAbv} %</td></tr>
        <tr><td>Sugar</td><td>${targetSugar} g/l</td></tr>
      `;

      saveParams();
    }

    // Copy URL to clipboard
    document.getElementById("copyLink").addEventListener("click", () => {
      navigator.clipboard.writeText(window.location.href);
      alert("Link copied to clipboard!");
    });

    // Bind inputs
    document.querySelectorAll("input").forEach(inp => {
      inp.addEventListener("input", calculate);
    });

    // Init
    loadParams();
    calculate();
  </script>
</body>

</html>