Paint Calculator
Estimate how much paint you need for a room based on wall dimensions, doors, windows and number of coats.
Coverage assumption
Most interior wall paints cover about 10 mยฒ per liter (โ 350 ftยฒ per US gallon) for one coat. We round up to whole liters and gallons for buying.
Frequently Asked Questions
Is the Paint Calculator free to use?
Yes, the Paint Calculator is 100% free to use. There are no subscriptions, no sign-ups, and no hidden fees.
Is my data safe when using the Paint Calculator?
Absolutely. All calculations performed by the Paint Calculator happen locally in your web browser. We do not store, track, or transmit your inputs or results to any server.
How accurate is the Paint Calculator?
Our Paint Calculator uses industry-standard formulas and methodology. You can view the exact formula and calculation logic used in the methodology section above to verify the math yourself.
Can I use the Paint Calculator on my mobile phone?
Yes! The Paint Calculator is fully responsive and works seamlessly on all devices including smartphones, tablets, and desktop computers.