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Conduit Area Calculator

Calculate a conduit's internal cross-sectional area from its internal diameter (A = π × (d ÷ 2)²).

The conduit's internal diameter, from its spec sheet or a direct measurement.

Formula

A = π × (d ÷ 2)²

A
Cross-sectional area, in square inches
d
Internal diameter, in inches

What this calculator does

Calculates a conduit's internal cross-sectional area from its internal diameter.

Use cases

  • Find the cross-sectional area of a conduit from its internal diameter
  • Compare available area across different conduit sizes
  • Get the area value needed for a fill percentage calculation

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