PaintCalc: Paint Calculator

How many litres of paint for your room? How many cans should you buy? PaintCalc gives you the exact answer in 30 seconds — so you never run out halfway up a wall, or pay for an extra can that dries out in the garage.

Enter your room dimensions, the project type (walls & ceilings, trim, facade), your paint's coverage and the number of coats: PaintCalc works out the net surface (openings deducted), the litres you need and the most cost-effective combination of cans, with a budget estimate.

WHAT PAINTCALC CALCULATES
• The surface to paint, with openings (doors, windows) deducted
• The litres of paint needed, based on your product's real coverage
• The number and size of cans to buy, at the best price
• A budget range from entry level to premium

BUILT FOR REAL JOBS
• Custom exclusion zones, named and saved (bay window, cupboard…)
• Tailored to each type: walls & ceilings, trim & doors, exterior facade
• Adjustable coverage (m²/L) and number of coats
• Professional formula: net surface = gross surface − openings

SIMPLE, NO STRINGS
• 100% free
• Works offline, no connection required
• No account, no personal data collected
• Keep a history of your projects, stored locally on your phone

Also available on the web at construcalc.app.

PaintCalc is part of the BTP Series, with TileCalc (tiles) and ConcreteCalc (concrete): all your job-site take-offs in one place.