Excavation Calculator
Estimate excavation volume in cubic yards.
How It Works
Volume = Length × Width × Depth. Cubic yards = Volume ÷ 27.
Example
A 20 ft × 10 ft × 3 ft excavation is 600 cu ft = 22.2 cubic yards.
Frequently Asked Questions
Why is excavation measured in cubic yards?
Excavators and hauling are priced by the cubic yard, so it is the number to give your contractor.
Should I add a swell or compaction factor?
Dug soil swells about 10–30% when loosened. Ask your hauler whether their price accounts for that.
Do I need a bench or slope?
For deep or unstable soil, OSHA requires sloped or benched walls — that adds volume beyond the box shape.