Foundation Excavation Volume — 40 × 30 × 3 ft
Calculate how many cubic yards of dirt to haul away for a 40 × 30 ft house foundation dug 3 feet deep.
How to use this tool
- Enter excavation length, width, and depth in feet.
- The calculator returns volume in cubic feet, cubic yards, and estimated truck loads.
- Account for soil swell (excavated soil expands by 20–30% in volume).
Find the excavation volume for a typical residential foundation before pouring concrete.
Frequently asked questions
- How do I calculate excavation volume?
- Multiply length × width × depth in feet to get cubic feet. Divide by 27 to convert to cubic yards. A standard dump truck holds about 10–14 cubic yards.
- How many cubic yards fit in a dump truck?
- A standard single-axle dump truck holds about 10 cubic yards. Tandem and tri-axle trucks can carry 14–20 cubic yards.