PaintCalc: Paint Estimator

PaintCalc tells you how many gallons of paint a room needs.

Enter your total wall length and height. Enter the number of doors and windows and PaintCalc subtracts their area from the walls. Set the number of coats and the coverage your paint reaches per gallon. Turn on the primer toggle to add one primer coat. Enter your cost per gallon.

The card at the top updates as you type. It shows the paint gallons you need, the net wall area in square feet, and the total cost.

WHAT YOU SET
- Total wall length and height
- Doors and windows, subtracted by count
- Number of coats
- Coverage in square feet per gallon
- Primer coat on or off
- Cost per gallon

The estimate updates instantly with every change. PaintCalc works fully offline. No account, no ads, no tracking.