Conduit Fill Calculator

Calculate conduit fill percentages according to NEC requirements to compare selected conduit and conductor areas; not installation approval.

Conduit Fill Parameters

Calculate conduit fill percentages according to NEC Chapter 9 requirements for proper wire installation

Conduit Specifications

Conduit Type

Trade Size

Installation Parameters

Installation Type

Fill Type

Wire Configuration

Wire 1

Wire Type

AWG Size

Count

Conduit fill calculations per NEC Chapter 9. Maximum fill percentages: 53% (1 conductor), 31% (2 conductors), 40% (3+ conductors). Nipples ≤24" allow 60% for multiple conductors.

Actions

Conduit Fill Analysis

Conduit-area comparison only and fill percentage breakdown

Configure conduit and wires to see fill analysis

Conduit-area comparison only

Next calculation, separate decision

Review ideal two-bend offset geometry. Each worksheet has different assumptions and does not approve a design.