Mulch Calculator
Calculate how much mulch you need in cubic yards and bags with this free online calculator. Enter your bed size and depth to estimate bags and cost.
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How to use Mulch Calculator
- 1Choose feet or metres and a rectangular or round bed
- 2Enter the bed size and the mulch depth
- 3Read the cubic yards (or m³) and the number of bags to buy
Frequently asked questions
How much mulch do I need?▾
Multiply the bed area by the depth. A 20 × 4 ft bed at 3 inches deep needs 20 cubic feet, which is about 0.74 cubic yards or ten 2 cu ft bags.
How deep should mulch be?▾
Two to three inches (5–8 cm) is enough for most garden beds. Use up to four inches for weed control on paths, and keep mulch away from tree trunks and stems.
How many bags are in a cubic yard?▾
A cubic yard is 27 cubic feet, so it equals 13.5 bags of 2 cu ft or 9 bags of 3 cu ft.
Embed Mulch Calculator on your website▾
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