Home projects, rooms, and kitchen math.

Free household calculators.

Estimate paint, size up rooms, and handle kitchen measurements with small tools designed for quick, one-off household decisions.

Home Projects

Estimate gallons of paint from wall width, height, coats, and coverage.

Estimate square footage, boxes, and waste for flooring projects.

Estimate tiles needed from project area, tile size, and waste allowance.

Estimate wallpaper rolls from wall dimensions, roll coverage, and pattern repeat.

Check whether furniture is likely to fit through doors and halls.

Find a rug size that fits your room and furniture layout.

Estimate curtain panel width and length from window and rod measurements.

Find a practical TV size range from viewing distance and room use.

Calculate water amount by rice type, rice amount, and cooking method.

Estimate dry pasta amounts by number of people and appetite.

Convert common kitchen measurements for cooking and baking.

Convert butter between sticks, tablespoons, cups, ounces, and grams.