Paint Calculator
Effortlessly estimate the amount of paint and primer you'll need for any project—walls, ceilings, and more. Get accurate cost projections with brand comparisons.
Enter your room and surface details below. Supports multiple rooms, subtracts doors/windows, includes coats and primer needs.
How this Paint Calculator Works
- Enter the dimensions for each wall/surface (height & width). Add doors/windows counts & their dimensions—their areas will be subtracted.
- Choose the number of coats and if primer is needed.
- Select a paint brand or input custom paint coverage/costs. Coverage is usually provided on the can.
- Our estimator calculates total coverage area, subtracts open areas, factors coats, primer, and outputs total paint and primer needed as well as project cost for each brand.