# Southwire® Conduit Fill Calc

> Utilities

Canonical page: [https://chrome-stats.com/d/id509204523](https://chrome-stats.com/d/id509204523)

## Overview

- **ID:** `id509204523`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Southwire Company
- **Category:** Utilities
- **Rating:** 4.50 / 5 (764 ratings)
- **Version:** 2.5
- **Last updated:** 2026-06-17
- **First published:** 2012-03-19
- **Size:** 19 MB
- **Data as of:** 2026-09-05
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/southwire-conduit-fill-calc/id509204523)
- **Website:** [http://www.southwire.com/apps](http://www.southwire.com/apps)
- **Privacy policy:** [http://www.southwire.com/support/privacy-policy-mobile-and-apps.htm](http://www.southwire.com/support/privacy-policy-mobile-and-apps.htm)

## Description

Southwire Conduit Fill Calc is a practical NEC conduit sizing tool for electricians, engineers, and contractors. It calculates conduit fill percentage according to NEC guidelines—just select conduit type and size, specify conductors, and the app returns the fill percent.

With quick navigation and one-click email capability, you can share results instantly. Southwire, North America's leading wire and cable manufacturer, provides this utility to streamline conduit sizing and NEC compliance in everyday electrical work.

## Rankings

- #62,094 — Overall

## Review summary

Users praise the app for fast, easy conduit-fill calculations and clear NEC indicators, especially useful for electricians and inspectors. However, repeated concerns include calculations not always aligning with NEC standards, lack of data-saving/retrieval features, and missing common wire types. Occasional bugs and UI changes (inputs being erased or harder to save) further impact reliability. Overall, a strong quick-calculation tool with notable reliability and data-management improvements needed.

### Pros

- Fast, quick calculations for conduit fill
- Easy to use with a simple interface
- Shows fill percentage and flags NEC compliance
- Allows multiple wire sizes/types in one calculation
- Handy tool for electricians and inspectors on iPhone

### Cons

- Accuracy can be inconsistent with NEC standards and may be unreliable
- No easy way to save or retrieve a specific calculation or data set
- Missing common conductor sizes/types (e.g., bare solid copper)

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Source: [Chrome-Stats](https://chrome-stats.com/d/id509204523)