Calculators / Mulch
Mulch Calculator
To calculate mulch, enter the bed length, width, and depth; this tool returns the volume in cubic yards, the number of 2 cu ft bags, and a cost estimate. One cubic yard covers 108 sq ft at 3 inches deep.
Real math, not AI guesses.
You need
1.85 cubic yards
Estimated cost
~$74
- Volume
- 50 cu ft
- Cubic yards
- 1.85
- 2 cu ft bags
- 25
Estimate only — actual quantities and prices vary by region and supplier. Verify with a professional before purchasing. Default price is a national average (as of 2026-06); edit it to match your supplier.
How to calculate mulch
The formula: cubic yards = (length × width × depth⁄12) ÷ 27
- Measure the bed length and width in feet and the depth in inches.
- Multiply length × width × (depth ÷ 12) for cubic feet, then divide by 27 for cubic yards.
- For bags, divide cubic feet by 2 (a standard bag) and round up.
- 2–3 inches is typical for established beds; 3–4 inches to suppress weeds.
Prices shown are national averages (as of 2026-06) and vary by region, brand, and supplier. They are estimates, not quotes.
Mulch FAQ
How much mulch do I need?+
A 20 ft × 10 ft bed at 3 inches deep is about 1.85 cubic yards, or roughly 25 bags of 2 cu ft mulch.
How many bags of mulch are in a cubic yard?+
A cubic yard is 27 cubic feet, so it equals about 14 bags of 2 cu ft mulch.