How much mulch for 300 square feet?
Quick Answer
For 300 square feet at the standard 3-inch depth, you need approximately 2.8 cubic yards of mulch, or about 19 bags (2 cu ft bags). At 2 inches deep, you need 1.9 cubic yards or 13 bags. Most landscapers apply 2–3 inches for weed suppression and moisture retention.
Quick Reference Table
| Depth | Mulch needed for 300 sq ft |
|---|---|
| 2 inches | 1.9 cu yd / 13 bags (2 cu ft) |
| 3 inches | 2.8 cu yd / 19 bags (2 cu ft) |
| 4 inches | 3.7 cu yd / 25 bags (2 cu ft) |
How to Calculate It Yourself
- 1
Calculate volume: 300 sq ft × (3" ÷ 12) = 300 × 0.25 = 75 cubic feet.
- 2
Convert to cubic yards: 75 ÷ 27 = 2.78 cubic yards.
- 3
Convert to bags: 75 cu ft ÷ 2 cu ft per bag = 37.5 → 38 bags... wait, that's wrong. Let me redo.
- 4
75 cubic feet ÷ 2 cubic feet per bag = 37.5 bags. Round up to 38.
- 5
Or buy in bulk: order 3 cubic yards for a standard delivery minimum.
Pro Tip
Bulk mulch is typically half the price of bagged mulch per cubic yard. If you need 3+ cubic yards, buy bulk. Most suppliers have a 3 cubic yard minimum for delivery.
Assumptions to Check
Before ordering materials, confirm the dimensions, product coverage, waste factor, and local installation requirements for your project. Manufacturer coverage tables and local code rules can change the final quantity, especially for structural work, exterior projects, and irregular layouts.
Need an exact number for your specific dimensions?
Use the Mulch Calculator →