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Paint Coverage Calculator

Estimate paint for wall area, openings and multiple coats.

Tool inputs stay in your browser · optional AI search sends your query

Good to know: Litres = net area × coats ÷ product coverage. Use the coverage on your paint label. Surface condition, primer and application losses may increase requirements.

How to use it (step by step)

  1. 1Fill in the boxes: “Wall area (m²)”, “Doors/windows area (m²)”, “Coats”, “Coverage per litre (m²)”. Example numbers are already there so you can see how it works; replace them with yours.
  2. 2The result updates instantly as you type (on a phone it is below the boxes).
  3. 3The bold line is the main answer. Tap Copy next to any value to copy it.

Words to know

Area / volume / perimeter
Perimeter = distance around a shape. Area = the flat space inside it (m²). Volume = the space inside a 3D object (m³).
Gross vs net
Gross = the full amount before deductions. Net = what is left after fees, taxes or deductions.

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