Mulch Calculator — Embeddable Widget

Calculate Your Mulch Needs

How do you want to enter your area?

Units

Material

Bed shape

Length (ft)

Width (ft)

Desired depth (in)

2–3″ is typical for garden beds.

Bag size (cubic feet)

Most home-store bags are 2 cu ft.

The math:

Cubic Feet = Length × Width × (Depth ÷ 12)

Cubic Yards = Cubic Feet ÷ 27 · Bags = Cubic Feet ÷ Bag Size

You need approximately

cubic feet of mulch

That's about

4 bags

(2 cu ft per bag)

0.3 cu yd total

For 32 sq ft at 3″ deep. Add 10% extra for settling.

Quick unit conversions
1 unit	Cubic feet	Cubic yards	Cubic meters	2 cu ft bags
1 cubic yard	27	1	0.765	13.5
1 cubic meter	35.3	1.308	1	17.7
1 cu ft bag	2	0.074	0.057	1

Bag-size comparison (per 100 sq ft at 3″ deep)
Bag size	Cubic feet per bag	Bags needed	Total cubic feet
Small	1.0	25	25
Standard	1.5	17	25
Standard	2.0	13	25
Bulk bag	3.0	9	25