How much mulch do I need for a 200 sq ft garden bed?

At 3-inch depth: 200 x (3/12) / 27 = 1.85 cubic yards, or about 25 bags (2 cu ft bags). With 10% waste, order 2.0 cubic yards or 28 bags.

Is bulk mulch cheaper than bagged?

Yes, significantly. Bulk mulch costs $20-$50 per cubic yard delivered. Bagged mulch (2 cu ft) costs $3-$6 per bag, which equals $40-$80 per cubic yard. For projects over 1 cubic yard, bulk delivery saves 30-50%.

What type of mulch should I use?

Hardwood mulch: best for flower beds, decomposes slowly. Cedar mulch: naturally pest-repellent, good for foundations. Pine bark: lightweight, good for slopes. Rubber mulch: permanent, good for playgrounds. Color-dyed mulch: aesthetic choice, may contain recycled wood.

How often should I replace mulch?

Annual refresh: add 1 inch of new mulch each spring. Complete replacement: every 3-5 years for hardwood, 2-3 years for pine bark. Cedar mulch lasts longer but is more expensive. Composted mulch breaks down faster but enriches soil.

Mulch Coverage Calculator

Find how many cubic yards or bags of mulch you need for any bed.

100% Free2026 UpdatedNo Signup

Mulch Coverage Calculator

Bed Area(sq ft)

Depth

A standard 3-inch depth provides the best balance of weed suppression and moisture retention for most garden beds. One cubic yard of mulch covers approximately 108 sq ft at 3 inches deep. Bulk delivery saves 30-50% compared to bagged mulch for orders over 1 cubic yard.

What This Calculator Does

The Mulch Coverage Calculator tells you how many cubic yards or 2-cubic-foot bags of mulch you need for garden beds, tree rings, and landscaped areas. Enter your bed area in square feet and desired depth, and get the volume in cubic yards with the +10% waste amount.

Mulch is one of the most common landscaping purchases, sold either by the cubic yard (bulk delivery) or by the 2-cubic-foot bag (retail). A 2 cu ft bag covers about 24 square feet at 1 inch depth, or 8 square feet at 3 inches. The calculator handles both measurement systems so you can compare bulk vs. bagged pricing.

Standard mulch depth for weed suppression and moisture retention is 3 inches. Going thinner than 2 inches allows weeds to penetrate. Going deeper than 4 inches can suffocate plant roots and harbor pests. The depth selector covers the full recommended range.

How to Use

Measure the total area of your garden beds or mulched areas in square feet.
Select your desired mulch depth: 2 in (light), 3 in (standard), 4 in (heavy), or 6 in (playground).
Enter the area and select the depth in the calculator above.
Click "Calculate" to see cubic yards and 2-cu ft bags needed.
Compare bulk (per cubic yard) vs. bagged pricing at your local garden center.

Worked Examples

Front Garden Bed Mulching

A 150 sq ft front garden bed mulched to a standard 3-inch depth for weed suppression and moisture retention.

→Area: 150 sq ft.
→Depth in feet: 3 in / 12 = 0.25 ft.
→Cubic feet: 150 x 0.25 = 37.5 cu ft.
→Cubic yards: 37.5 / 27 = 1.39 cu yd.
→With 10% settling waste: 1.39 x 1.10 = 1.53 cu yd (order 1.5 cubic yards bulk or 21 bags of 2 cu ft).

Result: Approximately 1.4 cubic yards of mulch needed; order 1.5 cubic yards bulk or 21 bags for full coverage with waste.

Apply mulch in a uniform layer, keeping it 2-3 inches away from plant stems and tree trunks to prevent rot and pest issues.

Reference Table

Mulch coverage reference - cubic yards by area and depth 2026
Bed Area	Depth 2 in	Depth 3 in	Depth 4 in	Depth 6 in
50 sq ft	0.31 cu yd	0.46 cu yd	0.62 cu yd	0.93 cu yd
100 sq ft	0.62 cu yd	0.93 cu yd	1.23 cu yd	1.85 cu yd
200 sq ft	1.23 cu yd	1.85 cu yd	2.47 cu yd	3.70 cu yd
500 sq ft	3.09 cu yd	4.63 cu yd	6.17 cu yd	9.26 cu yd
1,000 sq ft	6.17 cu yd	9.26 cu yd	12.35 cu yd	18.52 cu yd