Buy the right amount the first time
Quick calculators for home and yard projects. Enter your measurements and get the quantity to buy, with the math shown and the sources cited. No sign-up, no ads, and nothing you type leaves your browser.
Calculators
Concrete calculatorSlabs, round pads, and post holes: cubic yards and bags of 40–90 lb mix.
Gravel calculatorPaths, patio bases, and driveways: tons, cubic yards, or 50 lb bags of gravel and crushed stone.
Fence calculatorWood picket and privacy fences: posts, rails, pickets, and bags of concrete for the post holes.
Paver calculatorPatios and walkways: pavers to buy with extra for cuts, tons of gravel base, and bedding sand.
Mulch calculatorBeds and tree rings: cubic yards or bags of mulch, soil, or compost, including top-ups.
Topsoil calculatorNew lawns and raised beds: cubic yards or bags of topsoil and garden soil, with extra for settling.
Paint calculatorRooms: wall area after doors and windows, gallons for your coats, and what to buy.
How these work
Each calculator uses plain geometry (area × depth, or wall area ÷ coverage) plus the manufacturer's published numbers, such as how much concrete one bag makes. Every page shows a worked example so you can check the math, and lists its sources.
Budgeting for the project? The same maker runs Simple Money Sheets: free budget, loan, debt payoff, and savings calculators.