Free material calculator
Paint calculator with coats and openings
Estimate paint tins from room dimensions, doors, windows, coats and product coverage. Compare paint options and save your plan.
Start with the example, replace values with your measurements and product label, then compare the complete order. Read the calculation guide.
All prices use one currency. Currency selection changes the label, not exchange rates.
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The full planner and each calculator keep separate local saves. Download JSON to move projects between tools or devices. Saved projects are not cloud-synced.
Up to 40 material rows. Use a unique product/colour name for anything that must not be pooled.
Measured surfaces
| Room / area | Material | Surface area |
|---|
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How to use this calculator
For rectangular walls, enter height, total opening area, coats and label coverage. Ceiling inclusion assumes the same paint.
Volume is rounded up to full tins after identical paints have been combined. Compare product suitability and installation requirements separately.
What the estimate excludes
Labor, delivery, tax, accessories and detailed layout planning are outside this calculation. Your supplier should verify quantities before you buy. Prices and allowances in the initial form are illustrative, not market data.