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.
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Processing varies by tool. Check the instructions for local processing, server requests, external services and any file or request limits before entering sensitive information.
Read the privacy policyHow this calculation works
Understand the method, inputs and limits behind your result.
- Formula
- Required volume = length × width × depth × (1 + waste/100). Convert to cubic yards or m³; bag counts round up required liters / bag capacity.
- Variables
- Units: Feet & inches, Meters & cm
- Length (ft / m)
- Width (ft / m)
- Depth (in / cm)
- Extra for waste
- Price per cubic yard / m³ (optional)
- Units
- Extra for waste: %
- Use the same selected currency for all monetary inputs. Changing the symbol does not convert exchange rates.
- Example
- A 20 × 10 ft bed covered 3 in deep needs about 1.9 cubic yards, or 26 bags of 2 cubic feet.
- Assumptions
- Estimates only. Measure carefully and check quantities with your supplier before ordering.
- Source
- ToolzHive calculation guide and calculator implementation. External reference verification is pending.
- Last reviewed
- Review date not yet recorded.
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Clear instructions
Find steps, examples and limitations below.
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Open the tool in a supported web browser.
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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.
Practical guides
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How to Use Mulch Calculator
Find how much mulch you need for garden beds in cubic yards, cubic meters and 2 or 3 cubic foot bags, from the bed size and depth, with cost.
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