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Paint Coverage Calculator

Litres of paint needed to cover a wall area.

Estimate how much paint you need to cover the walls of a room based on area, paint coverage rate, and number of coats.

Marcus Laurent By Marcus Laurent
Published Last reviewed 1 min read

Inputs

m
m
m
m²/L

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

Litres = (perimeter × height) × coats / coverage; coverage is typically 10–12 m² per litre.

In depth

Estimate how much paint you need to cover the walls of a room based on area, paint coverage rate, and number of coats.