Free paint calculator

How many gallons of paint do I need?

Enter the area you're painting and the number of coats. We use 350 sq ft per gallon (the most common coverage rate) and round up — because paint stores don't sell partial gallons.

For walls: (perimeter × height) − doors and windows.

Most repaints need 2. New drywall or color changes may need 3.

Default 350. Premium paints can hit 400; textured surfaces drop to 250.

Paint needed

0 gallons

Rounded up — you'll never run a hair short.

Total paint surface
0 sq ft
Exact gallons (raw)
0
Suggested order (with 10% buffer)
0 gallons

Painting business?

Turn those gallons into a priced estimate instead of a number scribbled in the truck: line items from your own service catalogue, sent for signature, invoiced once it's accepted.

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Need saving, scheduling and payments?

ServeHub keeps every estimate and invoice on file, collects signatures, puts the work on the schedule and takes card payments. Unlimited users, nothing to install. 14 days free with a card, then from $20 a month.

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