How it works
How to calculate it
The calculator applies the values you enter to this formula:
Cubic yards = length × width × (depth ÷ 12) ÷ 27.
How to use this calculator
- Measure the area receiving soil.
- Choose the finished depth in inches.
- Calculate sections separately when depth varies.
Worked example
A 20 × 15 ft area filled 4 inches deep needs about 3.7 cubic yards.
Important assumptions
- The area has a uniform depth.
- Settling and compaction can increase the amount needed.
- Delivery and site preparation are excluded.
Common mistakes to avoid
- Confusing square yards with cubic yards.
- Ignoring settlement or compaction.
- Using fill dirt pricing for screened topsoil or compost.
Method reviewed June 10, 2026. Prices and rates are user-provided defaults and should be replaced with local values.