Paint Thinner Ratio Calculator
ANA›Life Services Authority›National Calculator Authority›Paint Thinner Ratio Calculator
.calc-container { max-width: 640px; margin: 2rem 0; padding: 1.5rem; background: #fff; border: 1px solid #ddd; border-radius: 8px; box-shadow: 0 1px 3px rgba(0,0,0,0.06); font-family: system-ui, -apple-system, sans-serif; } .calc-container h3 { font-family: Georgia, serif; font-size: 1.15rem; color: #1a1a1a; margin-bottom: 1rem; padding-bottom: 0.5rem; border-bottom: 2px solid var(--ac, #3d5a80); } .calc-row { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 0.75rem; flex-wrap: wrap; } .calc-row label { min-width: 160px; font-size: 0.9rem; color: #333; font-weight: 500; } .calc-row input[type="number"], .calc-row select { flex: 1; min-width: 120px; max-width: 200px; padding: 0.5rem 0.6rem; border: 1px solid #ccc; border-radius: 4px; font-size: 0.9rem; font-family: system-ui, sans-serif; color: #1a1a1a; background: #fafaf8; } .calc-row input:focus, .calc-row select:focus { outline: none; border-color: var(--ac, #3d5a80); box-shadow: 0 0 0 2px rgba(26,74,138,0.12); } .calc-row .unit { font-size: 0.82rem; color: #888; min-width: 30px; } .calc-btn { display: inline-block; margin-top: 0.5rem; padding: 0.55rem 1.5rem; background: var(--ac, #3d5a80); color: #fff; border: none; border-radius: 4px; font-size: 0.9rem; font-weight: 600; cursor: pointer; font-family: system-ui, sans-serif; } .calc-btn:hover { opacity: 0.9; } .calc-result { margin-top: 1.25rem; padding: 1rem 1.25rem; background: #f0f6fc; border-left: 3px solid var(--ac, #3d5a80); border-radius: 0 6px 6px 0; display: none; } .calc-result.visible { display: block; } .calc-result-label { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.06em; color: #666; margin-bottom: 0.25rem; } .calc-result-value { font-size: 1.6rem; font-weight: 700; color: var(--ac, #3d5a80); } .calc-result-detail { font-size: 0.85rem; color: #555; margin-top: 0.5rem; line-height: 1.5; } .calc-note { margin-top: 1rem; font-size: 0.8rem; color: #888; font-style: italic; } .calc-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem; margin-top: 0.75rem; } .calc-grid-item { padding: 0.6rem 0.8rem; background: #f8f9fa; border-radius: 4px; border: 1px solid #eee; } .calc-grid-item .label { font-size: 0.75rem; color: #888; text-transform: uppercase; letter-spacing: 0.04em; } .calc-grid-item .value { font-size: 1.1rem; font-weight: 600; color: #1a1a1a; } @media (max-width: 720px) { .calc-row { flex-direction: column; align-items: flex-start; gap: 0.3rem; } .calc-row label { min-width: auto; } .calc-row input[type="number"], .calc-row select { max-width: 100%; width: 100%; } .calc-grid { grid-template-columns: 1fr; } } .calc-chart { margin: 1rem 0; text-align: center; } .calc-chart svg { max-width: 100%; height: auto; } .calc-chart-legend { display: flex; flex-wrap: wrap; justify-content: center; gap: 0.6rem 1.2rem; margin-top: 0.6rem; font-size: 0.8rem; color: #555; } .calc-chart-legend span { display: inline-flex; align-items: center; gap: 0.3rem; } .calc-chart-legend i { display: inline-block; width: 10px; height: 10px; border-radius: 2px; font-style: normal; } .calc-related { max-width: 640px; margin: 2rem 0 1rem; padding: 1.25rem 1.5rem; background: #f8f9fa; border: 1px solid #e8e8e8; border-radius: 8px; } .calc-related h3 { font-family: Georgia, serif; font-size: 1rem; color: #1a1a1a; margin: 0 0 0.75rem; padding-bottom: 0.4rem; border-bottom: 2px solid var(--ac, #3d5a80); } .calc-related-list { list-style: none; padding: 0; margin: 0 0 0.75rem; display: grid; grid-template-columns: 1fr 1fr; gap: 0.4rem 1.5rem; } .calc-related-list li a { font-size: 0.88rem; color: var(--ac, #3d5a80); text-decoration: none; } .calc-related-list li a:hover { text-decoration: underline; } .calc-browse-all { margin: 0.5rem 0 0; font-size: 0.9rem; font-weight: 600; } .calc-browse-all a { color: var(--ac, #3d5a80); text-decoration: none; } .calc-browse-all a:hover { text-decoration: underline; } @media (max-width: 720px) { .calc-related-list { grid-template-columns: 1fr; } }
Paint Thinner Ratio Calculator
Calculate the exact amount of thinner needed for your paint based on the desired ratio, and get the final mixture volume.
Paint Volume (liters)
Ratio — Paint Parts
Ratio — Thinner Parts
Paint Cost per Liter (optional, $)
Thinner Cost per Liter (optional, $)
Calculate
function paiCalc() { var resultDiv = document.getElementById('pai-result'); resultDiv.style.display = 'block';
var paintVol = parseFloat(document.getElementById('pai-paint-volume').value); var ratioPaint = parseFloat(document.getElementById('pai-ratio-paint').value); var ratioThin = parseFloat(document.getElementById('pai-ratio-thinner').value); var paintCost = parseFloat(document.getElementById('pai-paint-cost').value); var thinCost = parseFloat(document.getElementById('pai-thinner-cost').value);
// --- Validation --- if (isNaN(paintVol) || paintVol ⚠ Please enter a valid paint volume greater than 0.'; return; } if (isNaN(ratioPaint) || ratioPaint ⚠ Paint parts must be at least 1.'; return; } if (isNaN(ratioThin) || ratioThin ⚠ Thinner parts cannot be negative.'; return; } if (ratioPaint + ratioThin === 0) { resultDiv.innerHTML = '⚠ Total ratio parts cannot be zero.'; return; }
// --- Core Formulas --- // Thinner Volume = Paint Volume × (Thinner Parts / Paint Parts) var thinnerVol = paintVol * (ratioThin / ratioPaint); // Total Mixture = Paint Volume + Thinner Volume var totalVol = paintVol + thinnerVol; // Thinner % = (Thinner Parts / (Paint Parts + Thinner Parts)) × 100 var thinnerPct = (ratioThin / (ratioPaint + ratioThin)) * 100; // Paint % var paintPct = 100 - thinnerPct; // Coverage ratio (thinner dilutes paint, so effective coverage factor) var coverageFactor = totalVol / paintVol;
// --- Optional Cost --- var costHTML = ''; var hasCost = !isNaN(paintCost) && paintCost >= 0 && !isNaN(thinCost) && thinCost >= 0; if (hasCost) { var totalCost = (paintVol * paintCost) + (thinnerVol * thinCost); var costPerLiter = totalCost / totalVol; costHTML = 'Total Material Cost$' + totalCost.toFixed(2) + '' + 'Cost per Liter of Mixture$' + costPerLiter.toFixed(2) + ''; }
resultDiv.innerHTML = '' + '' + 'Parameter' + 'Value' + '' + 'Paint Volume' + paintVol.toFixed(3) + ' L' + 'Thinner Volume Needed' + thinnerVol.toFixed(3) + ' L' + 'Total Mixture Volume' + totalVol.toFixed(3) + ' L' + 'Mixing Ratio (Paint : Thinner)' + ratioPaint + ' : ' + ratioThin + '' + 'Paint Percentage in Mixture' + paintPct.toFixed(1) + '%' + 'Thinner Percentage in Mixture' + thinnerPct.toFixed(1) + '%' + 'Volume Increase Factor' + coverageFactor.toFixed(2) + '×' + costHTML + ''; }
#### Formulas Used
Thinner Volume = Paint Volume × (Thinner Parts ÷ Paint Parts)
Total Mixture Volume = Paint Volume + Thinner Volume
Thinner % = [Thinner Parts ÷ (Paint Parts + Thinner Parts)] × 100
Volume Increase Factor = Total Mixture Volume ÷ Paint Volume
Total Cost = (Paint Volume × Paint Cost/L) + (Thinner Volume × Thinner Cost/L)
Cost per Liter = Total Cost ÷ Total Mixture Volume
#### Assumptions & References
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