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

Inside diameter (mm)

Required number input.

Pipe length (m)

Required number input.

Calculate a straight pipe's internal capacity from its inside diameter and length; excludes fittings and wall volume. 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]

Internal capacity (L)

The resulting internal capacity 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.

• Trapezoidal Trench Volume

  Calculate straight trench volume with a constant trapezoidal cross-section from top width, bottom width, depth, and length.

• Berm Slope Volume

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

• Concrete Volume

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