Paint Calculator

How to measure for paint

1. Find wall area (per wall width × height) and add them up.
2. Optionally subtract large windows/doors if you want a tighter estimate.
3. Choose coats and a coverage rate based on your paint and wall texture.

Assumptions to double-check

• Textured walls and color changes can reduce coverage.
• Primer can reduce coats, but it doesn’t replace paint volume.
• Ceilings and trim often need different paint and coverage assumptions.

Buying tips

• Buy enough from the same batch to avoid color variation.
• Round up if you’ll do multiple coats or have a lot of cutting-in.
• Keep a small amount labeled for future touch-ups.