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Paint Calculator
Walls minus openings, coats and waste.
Open interactive calculatorHow to use
Latex often 10–13 m²/L per coat.
Formula
L = (wall − openings) × coats × (1+waste) / coverage
FAQ
Is this Paint calculator accurate?
The formula and assumptions are shown on the page, and the engine is covered by audit tests. Results are for reference — not financial or medical advice.
Do I need an account?
No. Calculations run in your browser. Recents can stay on this device.
What inputs do I need?
Latex often 10–13 m²/L per coat.
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