Topsoil 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 topsoil preselected as the material: enter your area (directly, or as length × width) and how deep you want the layer, and get the volume in cubic yards and cubic feet, an estimated weight, and a bag count for standard 2 cubic foot bags.
Topsoil is far denser than mulch — its typical bulk density runs roughly 2,000-2,200 lb per cubic yard, close to a full ton, which is why the same volume of topsoil costs more to move and deliver than the equivalent amount of mulch. That density is only ever a typical figure: screened topsoil, compost-blended topsoil and wet topsoil all weigh differently, so the tool labels the weight as an estimate rather than a guaranteed delivery weight.
The complete calculator is available right here, simply preset to topsoil — switch to mulch, compost or gravel whenever you need to. All the math runs locally in your browser from static figures, with nothing uploaded and no sign-up required.
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.