Mulch Calculator
Work out how much mulch you need to cover a garden bed at a given depth. Enter the area and desired layer depth to get volume in cubic feet, cubic yards and cubic meters, the number of bags to buy for your bag size, and the total cost.
TheCalculators — Mulch Calculator
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Mulch Needed
4.63 cu yd
125 cu ft at 3 in deep over 500 sq ft — about 63 bags
Material estimate
- Area
- 500 sq ft
- Depth
- 3 in
- Volume
- 125 cu ft
- Cubic Yards
- 4.63
- Cubic Meters
- 3.54 m³
- Bags (2 cu ft)
- 63 bags
- Total Cost
- $283.50
Depth comparison for this area
Buying one extra bag beats running short — settle and rain reduce the effective depth over time.
Most useful next
Formula
Volume (cu ft) = area (sq ft) × depth (in) ÷ 12 · cubic yards = cu ft ÷ 27 · bags = ⌈cu ft ÷ bag size⌉
Pro tips
- • A 2–4 inch layer suppresses weeds while still letting rain reach the roots.
- • One cubic yard covers about 160 sq ft at 2 in depth, 108 sq ft at 3 in.
FAQ
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