Free paint calculator

Buy the right amount of paint.

Enter a few simple room measurements and get a clear estimate in seconds.

No sign-up
Metric and imperial
Instant result

Step 1 of 3

Measure your room

Room length m Room width m Wall height m

Step 2 of 3

Tell us about the surface

Wall surface Number of coats Doors Uses a standard-size estimate Windows Uses a standard-size estimate

Advanced settings (optional)

Paint label coverage m²/L

You usually do not need to change this. If your paint can or product page lists a coverage rate, enter that number here.

Step 3 of 3

Estimated paint needed

8.7 L 2.3 US gal

43.7 m² paintable area 10% extra included

Buy at least 8.7 litres in total. Check the label because real coverage varies by paint and surface.

Simple by design

How the estimate works

Measure

Enter the length, width and wall height of one rectangular room.

Adjust

Choose the wall condition and number of coats. Doors and windows are deducted.

Check

Use the optional coverage setting only when your paint label provides one.

A practical estimate

Simple for beginners, adjustable when needed.

PaintSimple automatically chooses a practical coverage rate from the wall surface you select. Paint product, texture, surface condition and application method can change real coverage, so an optional label setting is available for users who need it.