Paint Calculator
How to work out how much paint you need
- Choose metres and litres or feet and gallons, and enter the room size.
- Enter the number of doors and windows and tick the ceiling to include it.
- Enter the coats and the coverage from the paint tin.
Frequently asked questions
How much does a door or window take off?
About 1.9 m² (21 ft²) per door and 1.4 m² (15 ft²) per window.
What coverage should I use?
The figure on the tin, often about 10 m² per litre or 350 to 400 ft² per gallon. Rough or porous walls need more.
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