How Much Mulch for 300 Square Feet?

Answer at a glance — 300 sq ft

Depth	Cu ft	Cu yards	2 cu ft bags (with 5% waste)
1 inch	25	0.93	14 bags
2 inches	50	1.85	27 bags
3 inches	75	2.78	40 bags
4 inches	100	3.7	53 bags
6 inches	150	5.56	79 bags

How we calculated it

For 300 sq ft at 3 inches:

1. Volume = 300 × 3 ÷ 12 = 75 cu ft
2. Cubic yards = 75 ÷ 27 = 2.78 cu yd
3. Bags (2 cu ft) = 2.78 × 13.5 = 37.5 → with 5% waste = 40 bags

Compare nearby sizes

Area	At 2"	At 3"	At 4"
150 sq ft	14 bags	20 bags	27 bags
225 sq ft	20 bags	30 bags	40 bags
300 sq ft	27 bags	40 bags	53 bags
450 sq ft	40 bags	60 bags	79 bags
600 sq ft	53 bags	79 bags	105 bags

Depth guide

• 1–2 inches — top-dressing existing mulch, lightweight coverage
• 3 inches — standard for flower beds, best weed suppression
• 4 inches — new beds or heavy clay soil where drainage is poor
• 6 inches — play areas, paths (not recommended for planted beds)

Bags vs. bulk

For 300 sq ft you need 2.78 cubic yards. If your local supplier charges less per yard in bulk than bags (≈13.5 bags per yard), bulk delivery saves money at this quantity.

Use the Mulch Calculator to enter your exact dimensions and get a precise bag count with an optional price estimate.