Mulch Calculator
How much mulch do I need?
Measure your beds and choose a depth. We'll show the cubic yards for a bulk delivery and the number of bags if you're buying them.
- Or 2 cu ft bags
- 10 bags
- Or 3 cu ft bags
- 7 bags
- Volume
- 20.0 cubic feet
An estimate to plan and budget with. Measure carefully and check the product’s own figures before you buy.
Results update as you type.
How it’s calculated
- 1
Volume in cubic feet is length × width × depth (in inches ÷ 12).
- 2
There are 27 cubic feet in a cubic yard, the unit bulk mulch is sold in.
- 3
Bags are usually 2 or 3 cubic feet; we divide and round up.
Before you buy
Keep mulch a few inches away from tree trunks and house siding.
For bigger jobs (more than about 3 cubic yards) bulk delivery usually costs less than bags.
Measure each bed separately and add them up for an irregular yard.
Questions
How many bags of mulch are in a yard?
A cubic yard is 27 cubic feet: about 13.5 two-cubic-foot bags or 9 three-cubic-foot bags.
How deep should mulch be?
About 2 to 3 inches for most beds. Go up to 4 inches for new beds or weed control, and just 1 to 2 inches to refresh mulch that's already there.