Know exactly how much to buy before you go to the yard.
Free calculators for square footage, gravel, mulch, soil, sod, pavers and lumber. Type in your measurements and get the cubic yards, tons and bags you need. No signup.
Popular: square footage, gravel, mulch, board feet
Example: a gravel driveway
12 ft × 20 ft, 3 inches deep, crushed stone
- cubic yards
- 2.22
- cubic yards
- tons
- 2.7 to 3
- tons
- half-cubic-foot bags
- 120
- half-cubic-foot bags
Pick a calculator
Type your measurements and get the answer, with the math shown.
- Square footage calculatorSquare feet, yards, meters and acres
- Gravel calculatorYards, tons and bags
- Landscape rock calculatorYards, tons and bags
- Pavers calculatorPavers, base and sand
- Sand calculatorYards, tons and bags
- Concrete calculatorYards and bags of mix
- Fence post concrete calculatorBags per post
- Mulch calculatorYards and bags
- Topsoil calculatorYards, tons and bags
- Compost calculatorYards and bags
- Sod calculatorSquare feet, pieces and pallets
- Board feet calculatorBoard feet and cost
Browse by project
Measure
Square footage, square yards and acres for any room, yard or odd shape.
Hardscape
Gravel, rock, sand, pavers and concrete for driveways, paths and patios.
Landscape
Mulch, topsoil, compost and sod for garden beds and new lawns.
Roofing
Roofing squares, shingles, gutters and gutter guards.
- Gutter guard cost calculator (coming soon)
- Roofing calculator (coming soon)
HVAC
What size air conditioner or heater a room needs.
- BTU calculator (coming soon)
Where our numbers come from
The math is simple and always shown: length × width × depth, then converted to yards, tons or bags. The figures behind it, like how much a yard of stone weighs, come from published standards, and each page names its source next to the number:
- Stone, sand and soil weights: state transportation departments (California and Missouri)
- Base and sand depths under pavers: the paver industry standard (ICPI)
- Mulch, topsoil and sod guidance: university extension services
- Unit conversions: the National Institute of Standards and Technology (NIST)