Free tool, no sign-up
Paint calculator
How much paint do you need?
Enter your room's dimensions to get a paint estimate for your walls. Based on typical coverage - check the figure on your own tin, since it varies by brand and wall texture.
Units
Coats of paint
You'll need about
1.8 gallons
317 sq ft of wall, 2 coats - round up to 2 gallon cans when you buy.
A ballpark figure, not a guarantee - dark-to-light colour changes, textured walls and porous surfaces often need an extra coat.
Picking a colour next? See our cabinet colour ideas or exterior paint colours.






