Landscape material calculators
Free calculators for estimating mulch, gravel, topsoil, river rock, and other landscape materials in cubic yards, tons, and bags. Every calculator shows the formula it uses, so you can double-check the math before you order.
All calculators
Mulch calculator
Cubic yards and bags for beds and borders.
Topsoil calculator
Cubic yards for lawns and raised beds.
River rock calculator
Yards and tons by rock size.
Paver calculator
Paver count, sand, and base depth.
Retaining wall calculator
Blocks, caps, and backfill.
How to measure your yard for material
All landscape material estimates start from the same volume formula. Measure the length and width of the area in feet, decide how deep the material should be, and convert to cubic yards:
cubic yards = length (ft) × width (ft) × depth (ft) ÷ 27One cubic yard equals 27 cubic feet — a cube measuring 3 feet on each side. Depth is usually measured in inches, so divide inches by 12 before multiplying. For materials sold by weight, such as gravel and river rock, multiply the cubic yards by the material’s density (most gravel weighs 1.4 to 1.7 tons per cubic yard).