Topsoil Calculator
How Much Topsoil Do I Need
Enter length, width, and depth — get cubic yards instantly, plus a waste buffer recommendation.
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Fast estimate • DIY-only guidance • Always round up
How Much Topsoil Do I Need Calculator
Quick answer: Estimate cubic yards for gravel, mulch, or topsoil based on area and depth.
Calculator (Gravel / mulch / topsoil)
Steps
- Measure area (length × width).
- Choose depth (inches).
- Convert to cubic feet, then to cubic yards.
- Add 5–15% extra depending on uneven ground and compaction.
Reference tables
Quick conversion
| Unit | Equals |
|---|---|
| 1 cubic yard | 27 cubic feet |
| Depth 3 inches | 0.25 feet |
| Depth 4 inches | 0.333 feet |
Related pages
Disclaimer: DIY guidance only. Verify dimensions, codes, and safety requirements for your project.
Get more home project checklists and quick calculators at https://risingriverllc.com
Inputs
- Your dimensions (length/width/depth) and units
Outputs
- Estimated quantity
- Waste factor suggestion
- Printable material list
FAQ
Should I add extra for waste?
Yes. Most projects benefit from 5–15% extra depending on cuts, compaction, and mistakes.
Is this estimate exact?
No. It is a quick estimate. Confirm with product specs and local conditions.
What units should I use?
Use feet/inches consistently. The calculator converts common inputs.
Topsoil depth for lawn
Common ranges are ~2–4 inches for topdressing. New lawns may need more depending on site conditions.
Account for compaction and settling
Yes. Topsoil settles. Adding 5–15% extra is common, especially on uneven ground.
Cubic feet in a cubic yard
27 cubic feet = 1 cubic yard.