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.
What should you read before you order materials?
Field notes from real jobs that explain the numbers behind this calculator.