Mulch calculator
How much mulch do you need? Enter bed size and depth — we return cubic yards, cubic feet and 2 cu ft bag count.
Short answer: Cubic feet = L × W × (depth ÷ 12). Cubic yards = cu ft ÷ 27. A standard bag holds 2 cu ft. 20 × 4 ft × 3" = 20 cu ft ≈ 0.74 cu yd = 10 bags of 2 cu ft. Enter your measurements above and the mulch calculator returns the quantity, unit conversions and an estimated cost instantly, in imperial or metric — no sign-up needed.
What do you need to measure?
What is the answer?
How does the mulch calculator work?
Cubic feet = L × W × (depth ÷ 12). Cubic yards = cu ft ÷ 27. A standard bag holds 2 cu ft.
What does a worked example look like?
20 × 4 ft × 3" = 20 cu ft ≈ 0.74 cu yd = 10 bags of 2 cu ft.
What do people ask most?
›How many bags of mulch in a cubic yard?
About 13.5 bags of 2 cu ft mulch equal one cubic yard.
›How deep should mulch be?
2–3" for beds; 3–4" around trees but keep it off the trunk.
Which yard & landscape calculator should you use next?
Where can you learn more?
Read field notes on estimating and materials, or browse every calculator we make.