Free calculators for real projects
Fast, accurate online calculators for home-improvement and trade work. Every tool runs entirely in your browser — no sign-up, no uploads, nothing leaves your device.
Home & Trade
Concrete Calculator
Estimate the cubic yards, cubic meters, and pre-mix bags of concrete your slab or footing needs.
Home & Trade
Cubic Yard Calculator
Convert length, width, and depth into cubic yards of soil, mulch, gravel, or concrete.
Home & Trade
Gravel Calculator
Find how many cubic yards and tons of gravel you need to cover an area.
Home & Trade
Paint Calculator
Estimate how many gallons or liters of paint you need for a room, allowing for doors, windows, and coats.
Home & Trade
Tile Calculator
Work out how many tiles — and boxes — you need for a floor or wall, including a waste allowance.