About Concrete Gravel Calculator

Concrete Gravel Calculator works out how much material to buy for a project: cubic yards and bags of concrete, tons of gravel and stone, yards of topsoil and mulch, pallets of sod, and counts of pavers, blocks and bricks. It has 27 calculators and a set of reference tables, and it is free to use without an account.

Who it is for

Homeowners planning a patio, a path, a fence or a garden bed, and small contractors who want a quick, checkable number before calling a supplier. Every answer shows the arithmetic behind it, so you can follow it and check it against your own measurements.

Where the numbers come from

Bag yields are taken from manufacturers' data sheets. Weights per cubic yard come from state transportation departments (Missouri, California and Wisconsin), the U.S. Environmental Protection Agency's conversion factors, and highway research. Depths for lawns, mulch, play areas and paver bases come from university extension services, the Consumer Product Safety Commission and manufacturers' installation guides. Each page lists its sources with links, and the weight per cubic yard page brings the weights together.

Real materials vary. A supplier's stone may weigh more or less than the published figure, and wet material weighs more than dry. Treat the answers as a well-founded estimate, confirm weights with your supplier, and check local building codes before you build.

Questions and corrections

If something on the site is wrong, unclear or missing, write to admin@concretegravelcalculator.com with the page address and what should change. A person reads every message. The privacy page explains what the site records.