Method
Paint required is estimated by dividing total surface area multiplied by coats by the coverage rate per litre.
Utilities / browser tool
Paint Calculator
Uses a clearly documented total-surface-area model and labels the result as an estimate.
Your inputs stay on your device
Estimate paint required
live resultm²
m²/L
Estimated paint
2 coats across 40 m²
Coverage model
Single total surface area
Uses one total surface area, number of coats, and coverage in square metres per litre. The result is an estimate and does not account for texture, doors, windows, or waste.
Useful context
How it works
Use the calculator first, then scan the details below when you want more context about the inputs, result, or assumptions.
How to use it
Enter the surface dimensions or area, number of coats, and coverage, then review the estimated litres.
Understand the result
The result is the modeled paint volume before any separate allowance for trim, texture, spills, or waste.
Example
A 40 m² wall painted with two coats at 10 m² per litre needs about 8 litres.
Notes
Coverage varies by product and surface. Check the paint manufacturer’s label and account for doors, windows, and waste.
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