Ceiling Paint Calculator

Work out exactly how much paint you need for your ceiling, based on room area, coverage rate, and number of coats.

How to Use This Calculator

Choose your unit — Square Meters or Square Feet.
Enter your room's length and width — this gives the ceiling area (assumed equal to the floor area).
Set your paint's coverage rate — check the tin; a default is pre-filled for a typical ceiling paint.
Choose how many coats you plan to apply — 2 coats is standard for most ceilings.
Read your results instantly — ceiling area and total paint needed, rounded up to the nearest practical can size.

Room Length (m)

Room Width (m)

Coverage Rate (m² per liter)

Updates instantly as you adjust settings.

Ceiling Area

20.0 m²

≈ 215.3 ft²

Total Coverage Needed (with coats)

40.0 m²

Paint Needed

4.0 L

💡 Buy a little extra beyond the calculated amount for touch-ups — paint batches can vary slightly in color between purchases.

Use your calculated paint quantity when shopping for your ceiling project. Save or share your results below.