Mulch Calculator
Find how much mulch you need for garden beds, in cubic yards and bags.
Enter your values to see the result.
Estimates only. Measure carefully and check quantities with your supplier before ordering.
Continue your work
- Topsoil Calculator — Top up soil before mulching.
- Sod Calculator — Plan a new lawn.
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Clear instructions
Find steps, examples and limitations below.
Use online
Open the tool in a supported web browser.
Free to use
No sign-up required. Tool-specific limits may apply.
How to use the Mulch Calculator
Find how much mulch you need for garden beds, in cubic yards and bags.
- 1 Enter the bed length, width and mulch depth.
- 2 Add waste and an optional price.
- 3 Read the cubic yards and bags needed.
Example and practical tips
A 20 × 10 ft bed covered 3 in deep needs about 1.9 cubic yards, or 26 bags of 2 cubic feet.
Frequently asked questions
How deep should mulch be?
2–3 in suppresses weeds and holds moisture; more can smother plants.
Bulk or bags?
Bulk delivery is usually cheaper above about 2 cubic yards.
Report an issue
Something broken or not quite right? Tell us and we will look into it.