Paint Calculator

What are you measuring?

Estimate all four walls from room perimeter, wall height and combined openings.

Units

Your measurements

Room length

Room width

Wall height

Number of coats

Coverage per gallon

ft²/US gal

Use the spread rate on the product data sheet.

Adjust estimate

Waste, compaction, density and price. Sensible defaults are already applied, and whatever is in use is listed under the result.

Doors and windows area

ft²

Touch-up allowance

Optional. Zero keeps the result tied to measured area and product coverage.

Price per gallon

Optional. Enter your own store price to estimate material cost.

Result

You need 3 one-gallon cans of paint.

Based on: 350 ft² per US gallon · 2 coats

Coverage changes with product, colour, porosity and application. Use the data sheet for the paint you will buy.