THE MATERIALS DESK / MULCH
Mulch calculator.
Measure the area, choose your layer depth, and see how much mulch to order. Keep every bed in one project.
YOUR GARDEN, IN PERSPECTIVE8 ft × 4 ft · 3 in deep
MULCH VOLUME TO PLAN FOR
8cu ft
0.3 cu yd · 227 L
6 bagsat 1.5 cubic feet each
Rounded up8 × 4 × (3 ÷ 12) = 8 cubic feet.
Saved on this device. No account needed.
An even layer starts with a measured area.
How to measure your bed ↗A worked example
A 10 × 12 ft area covered 3 inches deep requires 30 cu ft, or about 1.11 cu yd. At 2 cu ft per bag, that is 15 bags without an allowance.
The default depth is a worked example, not a recommendation for every plant or product. Confirm the appropriate depth with your material supplier or local gardening guidance.
The calculator converts your measurements, applies your optional allowance, and rounds the final bag quantity up. It does not assume a density or predict settling.
Before you place the order
- Use inside dimensions and only the layer that will contain this material.
- Check the net volume printed on the bag. Weight alone cannot tell you volume without a material-specific density.
- Confirm delivery minimums and ordering increments with the supplier.
- Group matching products before rounding a combined order; different materials stay separate.