Trowla

Exterior Paint Calculator

Estimate the gallons of exterior paint your job needs, then price paint and labor into a client-ready quote. Rough or textured siding covers less per gallon.

Built for contractors, not spreadsheets

12.00 gallons — Paint

Build a priced estimate

Material prices are your cost — add a markup. Your labor rate is what you bill the client. Saved on this device.

Add your company details

Optional — puts your company on branded PDF quotes and unlocks your saved dashboard. Everything stays on your device.

Frequently asked questions

How much exterior paint do I need?

Multiply the wall area by the coats, divide by the coverage per gallon (about 250-300 sq ft on rough siding), and round up. This calculator prices it too.