Paint Calculator

Enter your room's dimensions to estimate how much paint you'll need.

Units

Room length

Room width

Wall height

Doors (~21 sq ft / 2 sq m each)

Windows (~15 sq ft / 1.4 sq m each)

Number of coats

Coverage per gallon

How this works

Calcugator adds up the area of all four walls, subtracts doors and windows, then multiplies by your number of coats. Dividing that by how much area a can covers gives the amount of paint you need, rounded up to a whole can.