Home & Garden Calculators
Buy the right amount of material the first time and understand what your appliances cost to run.
- 12 tested calculators
- Formulas explained
- Private and free
Mulch Calculator
Cubic yards and bags for a garden bed.
Gravel Calculator
Cubic yards and tons of gravel or stone.
Fence Post Concrete Calculator
Bags of concrete to set fence posts.
Paver Base Calculator
Gravel base, sand and pavers for a patio.
Drywall Calculator
Sheets of drywall for walls and ceiling.
Wallpaper Calculator
Rolls of wallpaper by the strip method.
Tile Calculator
Tiles and boxes for a floor or wall.
Pool Volume Calculator
Gallons in a rectangular, round or oval pool.
Grass Seed Calculator
Pounds of seed for a new lawn or overseeding.
Space Heater Cost Calculator
Electricity cost of a space heater.
EV Charging Cost Calculator
Cost per charge and per mile for an EV.
BTU Calculator
AC size in BTU for a room.
Measure once, buy once
Running short of mulch or concrete halfway through a project means an extra trip; overbuying wastes money. These calculators turn your measurements into cubic yards, bags, sheets and rolls, with sensible waste allowances, and they explain the formulas so you can adjust for your own situation.
Material densities and coverage figures are typical values — always check the product label or ask your supplier for exact numbers.