Features & Capabilities

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.

User Growth & Download Statistics

By:
Southwire Company
Rating:
4.50
(741)
1 new ratings
Version:
2.3.1 Last updated: 2025-07-24
Version code:
876650931
Creation date:
2012-03-19
Compatible devices:
Size:
15.71MB
URLs:
Website ,Privacy policy
Full description:
See detailed description
Source:
Apple Apps Store
Data ingested on:
2026-06-06
Compare stats and ranking:

Ranking

Other platforms

Android
Southwire® Conduit Fill Calc (v2.4.1)
184,993 4.04 (366)

Contact the developer

Chrome-Stats does not own this Apple app. Please use these information below to contact the Apple app developer.
Developed by:
Southwire Company
Apple Apps Store
https://apps.apple.com/us/app/southwire-conduit-fill-calc/id509204523
Website:
http://www.southwire.com/apps

User Reviews

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)
Recent reviews
My go to app for quick calculations
by Da*****, 2026-02-07

Love the app except I’ve had others check me after I’ve used and found a small deficiency of accuracy not severe
by Ta*****, 2025-10-25

The reason I say this is because we work with 0-10 lightning controls a lot, which means that without 16 & 18 awg, this utility is incomplete. Disappointing really…
by Mr*****, 2025-08-02
View all user reviews ›

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