Paint Calculator
Estimate paint liters and the number of cans needed from wall area, openings, coats, and product coverage.
Your result
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How to use this calculator
- Enter your values in the labeled fields, keeping the displayed units.
- Choose Calculate or press Enter in a single-line field.
- Review the result and the assumptions below before using it.
Formula and method
Paint liters = (wall area − openings) × coats / coverage. Cans = liters / can size, rounded up.
Worked example
40 m² of walls minus 4 m² of openings, with two coats at 10 m²/L, needs 7.2 L or three 2.5 L cans.
What the result assumes
Coverage depends on the paint and surface. Use the manufacturer’s coverage and allow separately for absorbent or textured walls.
Common question
Does this include ceilings?
Include ceiling area in total area if you plan to paint it with the same product and number of coats.