Conduit Fill Calculator

IFlexCable Technology Co., Ltd. specializes in the R&D, manufacturing and supply of power, control, flame retardant and photovoltaic cables for industrial, construction, grid and new energy customers.

IFlexCable Technology Co., Ltd.

Power cable, control cable, instrumentation cable, photovoltaic cable and custom industrial cable solutions.

Engineering Tool

Conduit Fill Calculator

Check conduit occupancy for one or multiple cable groups, verify fill ratio against engineering limits, and estimate the next suitable conduit size. Supports both custom inside diameter and built-in reference trade sizes.

English UI Custom ID mode Reference trade size recommendation
Fill logicCompares total cable area with allowable conduit area based on selected occupancy rule.
Practical useUseful for quotation support, routing checks, and preliminary electrical layout decisions.

Conduit Inputs

Enter conduit dimensions and cable quantities. All diameter values below are in millimetres.

Cable Schedule

Add each cable group with outside diameter and quantity.

Summary

Shows conduit area, allowable fill area, occupied cable area, and resulting fill ratio.

Decision

Recommended next conduit size based on current cable list and reserve target.

Cable Area Breakdown

Each cable group contribution to the total conduit occupancy.

Reference Size Suggestions

Built-in sizes are intended for pre-checks. Always verify actual manufacturer inside diameters and local code requirements.

This tool is intended for preliminary engineering checks. Actual conduit sizing should be confirmed against project specification, local code rules, bending/routing constraints, and the selected conduit manufacturer's dimensions. Contact Technical Support
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