How to use the volume calculator
- Choose metric or imperial units and the shape of the area.
- Enter the length and width (or diameter), and the depth.
- For several identical areas or holes, enter how many.
The formula
volume = length × width × depth
cubic yards = cubic feet ÷ 27
Volume conversions
| From | To | Multiply by |
|---|---|---|
| cubic yards | cubic feet | 27 |
| cubic yards | cubic metres | 0.764554857984 |
| cubic metres | cubic yards | 1.308 |
| cubic metres | litres | 1,000 |
| cubic feet | litres | 28.3168 |
Turn volume into what to buy
Volume is only half the answer. For a material-specific result — tonnes, bags and cost — use the gravel, topsoil, mulch or concrete calculators.
Common mistakes to avoid
- Not converting depth. 3 inches is 0.25 ft — the calculator converts for you if the units are set correctly.
- Confusing square yards and cubic yards. Square yards measure area; cubic yards measure volume.
- Forgetting compaction. Loose materials take up less room once compacted — use the material calculators, which include an allowance.
Measuring an awkward shape? See how to measure an irregular area.
Frequently asked questions
How many cubic feet are in a cubic yard?
Exactly 27, because a cubic yard is 3 ft × 3 ft × 3 ft.
How do I convert cubic yards to cubic metres?
Multiply by 0.764554857984 — one cubic yard is about 0.765 m³. To go the other way, multiply cubic metres by about 1.308.
How do I calculate cubic yards from inches of depth?
Convert everything to feet first: depth in inches ÷ 12. Then multiply length × width × depth (all in feet) and divide by 27. A 10 × 10 ft area at 4 inches deep is 100 × 0.333 = 33.3 ft³, or 1.23 cubic yards.
How much does a cubic yard weigh?
It depends entirely on the material. Use the gravel, topsoil or concrete calculators, which apply typical densities for each material.
Last updated 10 November 2026. Found a mistake? Tell us.