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Trench Volume Calculator

Estimate excavation volume for rectangular or sloped trenches, and allow for excavated soil swell.

Your measurements

Choose a unit beside each measurement. Switching units preserves your dimensions.

Your estimate

Enter measurements and select Calculate.

How this estimate works

In-place volume = length × depth × average of top and bottom widths. For vertical sides the widths are equal. Loose volume includes your swell allowance. Constant cross-section assumed; no pipe or bedding deduction. Geometry only: this does not determine safe slopes, shoring, or excavation procedures.

Values are rounded only for display. Calculations stay on this device. No signup required.

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