Paint Calculator: Rooms & Cost

How much paint do I need? This paint calculator adds up every room in your job by square feet (or square metres), then tells you how many gallons or litres to buy, which cans, and what it will cost. A free paint estimator that works offline, with no sign-up. ALL YOUR ROOMS • Add each room: length, width and wall height, in feet and inches (12' 6") or metres • Doors and windows come off automatically (20 sq ft a door, 15 sq ft a window; change them) • Paint the ceiling too, with its own paint and coats • Odd shapes: add an alcove or a sloped wall, or take off tiles and built-ins • Walls and ceilings totalled for the whole job; your rooms are saved THE PAINT TO BUY • Gallons or litres for walls, ceilings and an optional coat of primer • Coats and coverage you set from the can (most paints say 350–400 sq ft per gallon) • Whole cans worked out for you: 5-gallon buckets, gallons and quarts, or 10, 5, 2.5 and 1 litre tins • Enter your store's prices and it picks the cheapest mix and adds up the total cost • Share the shopping list in one tap Works in imperial (sq ft, US gallons) or metric (m², litres). No internet, no account, nothing locked. Free with a small banner ad; an optional one-time purchase removes the ads. From Fernhart Labs.