About Paint Calculator
Estimate the gallons or liters of paint needed to paint any room.. Designed for accurate, instantaneous calculations with zero wait time.
Formula
Gallons = [(Perimeter × Height) - Deductions] × Coats / 350 sq ft per gallon
Example Calculation
A 12ft × 14ft room with 8ft ceilings and 2 coats requires approx 2 gallons of paint.
How to Use
- Enter your values into the form fields above.
- The calculation updates immediately in real time.
- Inspect the main summary and secondary breakdowns below.