Gravel Calculator — Cubic Yards, Weight & Bags
Calculate how much mulch, topsoil, compost or gravel you need from area and depth — cubic yards, cubic feet, estimated weight and bags to buy.
Processed entirely in your browser — nothing you enter here is ever uploaded.
Result
About this tool
This page opens the calculator with gravel (or crushed rock) preselected: enter your area (directly, or as length × width) and the depth of the layer, and get the volume in cubic yards and cubic feet plus an estimated weight and a bag count for standard 2 cubic foot bags.
Gravel is by far the heaviest of the four materials this calculator covers — a typical bulk density of roughly 2,700-3,000 lb per cubic yard, well over a ton, which matters for anyone planning to move it by hand or checking what a trailer or truck can carry. Exact density depends on the stone size and how tightly it's compacted, so the figure here is a typical starting point rather than a guaranteed scale weight.
You're looking at the full calculator, just preconfigured for gravel — switch to mulch, topsoil or compost at any moment. Every calculation happens locally in your browser using static figures, with no uploads and no account needed.
Example. A 10 foot by 10 foot area at 3 inches of mulch returns 25.0 cubic feet, 0.93 cubic yards, 370 pounds, and 13 bags of 2 cubic feet.
Limit. Weight uses a single bulk density per material, 400 pounds per cubic yard for mulch, 2100 for topsoil, 1050 for compost, and 2850 for gravel.