Calculate exact paint quantities for your room in seconds. Enter dimensions, doors, and windows to get accurate gallon estimates. Free paint estimation tool for DIY and contractors.
Calculate how much paint you need for your room. Enter the dimensions of your room and the number of doors and windows to get an accurate estimate.
Total Wall Surface Area
0.00 sq ft
Paintable Surface Area
0.00 sq ft
Paint Needed
0.00 gallons
Note: Standard sizes used for calculation
The paint needed is calculated by taking the total wall area, subtracting the area of doors and windows, and dividing by the paint coverage rate.
Paint Needed = (Wall Area - Door Area - Window Area) Ă· Coverage Rate
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