FREE · CALCULATORS & CONVERTERS
Paint Calculator.
Estimate wall and ceiling area, litres of paint and the number of cans from coats, coverage and waste.
Openings share one width and height and are removed from the walls only. Coverage and can size are the values you enter. Can count rounds up. Local arithmetic only. This is a quantity or geometry estimate, not a code check and not a substitute for a licensed professional.
- Wall area
- 45 m²
- Ceiling area
- 20 m²
- Painted area
- 90 m²
- Paint
- 9 L
- Cans
- 2
Painted area is the selected surface times the number of coats and the waste percent. Litres are that area divided by the coverage in square metres per litre. Can count rounds up.
How to use Paint Calculator
Enter the room, subtract repeated openings, then set the coats, the coverage in square metres per litre and the can size.
How it works
Estimate wall and ceiling area, litres of paint and the number of cans from coats, coverage and waste. Openings share one width and height and are removed from the walls only. Coverage and can size are the values you enter. Can count rounds up. Local arithmetic only. This is a quantity or geometry estimate, not a code check and not a substitute for a licensed professional.
Example
A 5 m × 4 m × 2.5 m room, two coats, 10 m² per litre.
Questions about Paint Calculator
Is Paint Calculator free, and do I need an account?
Yes. This tool is free to use in your browser without an account. Processing takes place on your device.
What are the limits and what should I check?
Openings share one width and height and are removed from the walls only. Coverage and can size are the values you enter. Can count rounds up. Local arithmetic only. This is a quantity or geometry estimate, not a code check and not a substitute for a licensed professional. Review the result before using it in your work.
Is my input sent to a server?
Your input is processed in your browser and is not uploaded by this tool. Files and pasted text are cleared when the page is refreshed. Normal website requests are still required to load the page and its libraries. Read the privacy explanation.