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Paint calculator
Litres of paint for your walls and ceiling, minus doors and windows, for any number of coats.
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About Paint calculator
Calculates litres of paint from wall and ceiling areas, minus doors and windows, for the coats you plan. Typical coverage is around 10 to 12 square metres per litre, but rough or dark surfaces take more. New plaster needs a primer or a diluted first coat.
How to use Paint calculator
- Enter your numbers above.
- The result updates instantly as you type.
- Change any value to compare different cases.
Why use this tool?
- Private: everything happens in your browser. Nothing you enter is uploaded.
- Free, with no sign-up, no watermark and no limit on how often you use it.
- Works on phones, tablets and computers: Android, iPhone, Windows, Mac and Linux. Nothing to install.
- Available in 10 languages.
Also known as
Frequently asked questions
How much paint do I need for a 4 by 4 m room?
Walls total about 38 square metres, so two coats need roughly 7 litres, less if you subtract doors and windows.
Is Paint calculator free?
Yes. Paint calculator on Toolipedia is free to use, with no sign-up and no watermark.
Is it safe to use?
Yes. Everything is worked out in your browser, and nothing you enter is sent to our server.
Does it work on my phone?
Yes. It works in any modern browser on Android and iPhone, as well as on tablets and computers. There's nothing to install.
Do I need an account?
No. Just open the page and use the tool. There's no sign-up and no email needed.