A walkthrough, end to end.
- 1
Enter the area length and width, plus the desired mulch depth.
- 2
Choose ft + in or m + cm units.
- 3
See cubic yards, cubic meters, and the number of 2 cu ft (or 50 L) bags needed.
Mulch volume
Volume = area × depth. 1 cu yd = 27 cu ft. A standard mulch bag holds 2 cu ft (≈56 L).
What you can do with this.
Spring landscape refresh
Top up beds with 2–3 inches of mulch each spring.
New garden bed
Estimate mulch for a fresh 4-inch layer.
Tree wells
Mulch a circular tree ring without piling against the trunk.
Playground surface
Engineered wood fiber depth for safety.
Vegetable garden
Light layer of straw or wood mulch for moisture retention.
Slope erosion control
Plan deeper mulch on slopes.
Bag count for delivery
Compare cost of bulk vs. bagged mulch.
Mulch 2026 — what's current
Standard landscaping math; calculator wins for instant bag count.
Frequently asked.
2–3 inches is standard for most beds; 4 inches for new beds or weed suppression.
Default is the US 2 cu ft bag. Adjust the bag-size field if your supplier differs.
Bulk (cubic yard) is cheaper for areas above ~150 sq ft.
No. All math runs in your browser.