How much mulch do you need for 150 square feet?

Covering 150 square feet (for example a 15×10 ft bed) with mulch 3 inches deep takes 1.39 cubic yards — that's 19 bags of 2 cu ft or 13 bags of 3 cu ft. At 2 inches you need 0.93 yards.

Change the numbers

The calculator below is pre-filled for this project. Adjust any value — including feet and inches — and the results update instantly.

Several beds? Add up their square footage and use “Total area”.

Your results

Mulch needed1.39 cu yd

2 cu ft bags19

3 cu ft bags13

Cubic feet37.5 cu ft

One cubic yard covers108 sq ft at this depth

How much mulch do you need for 150 square feet — diagram

Mulch for 150 sq ft at every depth

Depth	Cubic yards	2 cu ft bags	3 cu ft bags
1 in	0.46	7	5
2 in	0.93	13	9
3 in	1.39	19	13
4 in	1.85	25	17

Bags or bulk?

At 1.39 cubic yards, bags are the convenient choice — about 19 bags of 2 cu ft fit in most car trunks over one or two trips.

The math

150 sq ft × 3 in ÷ 12 = 37.5 cu ft 37.5 ÷ 27 = 1.39 cu yd 37.5 ÷ 2 cu ft = 19 bags (rounded up)

Common questions

How many bags of mulch for 150 square feet?

19 bags of 2 cu ft at 3 inches deep, or 13 bags at 2 inches.

How many yards of mulch for 150 square feet?

1.39 cubic yards at 3 inches, 0.93 at 2 inches.

Want the full method, tips and other sizes? See the mulch calculator guide.

Last reviewed November 1, 2026. Results are estimates — confirm with your supplier.

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