Paint Calculator

Enter your wall area to instantly calculate how much paint you need. Accounts for number of coats and coverage rate with this free online paint calculator.

Frequently Asked Questions

How much area does one liter of paint cover?
A typical interior latex paint covers about 8-12 m² (85-130 sq ft) per liter. Coverage varies with wall texture, paint type, and dilution ratio.
How many coats of paint do I need?
Two coats are generally recommended for an even finish. If you are making a drastic color change, three or more coats may be needed.
Should I subtract windows and doors from the wall area?
Yes. Subtract the area of windows, doors, and other surfaces you will not paint. This calculator allows you to enter opening areas separately.
Updated 2026 pricing