Room Paint Calculator
Enter your room dimensions, number of doors and windows and coats. Get paint, primer and tape needed.
Result
- Wall area (net)
- 43.1 m²
- Ceiling area
- 20 m²
- Total paintable area
- 63.1 m² (679 sq ft)
- Paint needed (2 × Coats)
- 12.6 L (3.3 US gal)
- Primer (1 coat)
- ~5.3 L
- Masking tape
- ~2 rolls
Estimates only; actual needs depend on product pack sizes and manufacturer coverage.
Related calculators
Kitchen Cabinet Calculator
Free kitchen cabinet calculator: enter width, height and depth to get a panel cut list, number of 18 mm sheets, edge banding, hinges and assembly steps.
Bathroom Vanity Calculator
Calculate board, sheets, edge banding and hardware for a bathroom vanity cabinet. Free cut list and assembly steps, no sign-up.
Wardrobe Calculator
Free wardrobe calculator: get a cut list, board sheets, edge banding, hinges, drawer slides and handles for your DIY closet.
Tile Calculator
Free tile calculator: enter room size and tile size to get boxes of tile including waste, adhesive bags and grout needed.
Frequently Asked Questions
How much area does 1 liter of paint cover?
Most interior emulsions cover 10–12 m² per liter per coat (about 350–400 sq ft per US gallon).
How many coats of paint do I need?
Two coats are standard; use primer plus two coats on new plaster or when changing to a very different color.