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Mulch Calculator — Cubic Yards, Bags, Coverage, Weight & Cost

Editable live calculator

Change any input — the result updates immediately

No hidden assumptions. Inputs, units and the working stay visible so you can check the calculation.

Unit system Bed area input Bed length (ft) Bed width (ft) Finished mulch depth (in) Bag volume (cu ft) Bulk price per cu yd (optional) Order / settling allowance (%) Price per bag (optional) Material density (kg/m³, optional) Use a supplier or measured density when weight matters.

Calculated result

0.972 cu yd mulch · 14 bags

100 sq ft bed area · 26.25 cu ft order volume after 5% allowance

1 cu yd covers about 108 sq ft at 3 in depth · one 2 cu ft bag covers about 8 sq ft

Weight skipped because no material density was entered.

Bagged cost skipped.

Bulk cost skipped.

Show the working

1. Bed area = 100 sq ft.
2. Base volume = 100 × 0.25 = 25 cu ft.
3. Order volume = 25 × 1.05 = 26.25 cu ft = 0.97222 cu yd; bags = ceil(26.25 ÷ 2) = 14.

Volume and optional user-entered density/cost only. Choose mulch type and horticultural depth for the actual planting/site conditions.

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