Use this construction calculation for preliminary quantity, geometry, material, load, or coverage planning when dimensions and units have been measured consistently.

Top width (m)

Required number input.

Bottom width (m)

Required number input.

Depth (m)

Required number input.

Trench length (m)

Required number input.

Calculate straight trench volume with a constant trapezoidal cross-section from top width, bottom width, depth, and length. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Trench volume (m³)

The resulting trench volume returned as a number.

• A quantity estimate or simplified engineering formula is not a building-code check, stamped design, manufacturer approval, or site inspection. Material properties, tolerances, waste, moisture, workmanship, loads, local conditions, and code requirements can change the result.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Verify dimensions on site, use current product data and local code requirements, include an explicit waste or safety allowance where appropriate, and obtain qualified structural, electrical, plumbing, or geotechnical review when required.

• Berm Slope Volume

  Calculate straight berm volume with a trapezoidal cross-section and constant top and base widths.

• Rectangular Excavation Volume

  Calculate in-place volume of a rectangular excavation from measured length, width, and depth.

• Concrete Volume

  Calculate rectangular concrete volume in cubic meters from length, width, and pour thickness measured in meters.