Free home calculators

Quick answers for planning a room: how big it is, and how much paint, flooring and drywall to buy. Free, in feet or metres, no sign-up.

• Square footage calculatorAdd up rooms, rectangles or L-shapes, in square feet or square metres.
• Paint calculatorGallons or litres for walls and ceiling, less doors and windows.
• Flooring calculatorArea with waste, boxes to buy and the cost, by type of flooring.
• Drywall calculatorSheets for the walls and ceiling, by sheet size, with waste.
• Room size guideStandard and minimum sizes for bedrooms, kitchens, bathrooms and more.