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Best Conduit Fill Tracker Apps

250+ iOS apps curated and reviewed

4.1 avg rating
19 free apps
Updated September 2026

Out of 250+ conduit fill tracker apps on iOS, 19 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.

Compare top Conduit Fill Tracker Apps (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Southwire® Conduit Fill CalcSouthwire® Conduit Fill CalcFree4.5★ (746)NoNoSep 2026
2Conduit Fill Capacity CalculatorConduit Fill Capacity CalculatorFree4.0★ (1)NoNoAug 2026
3Mike Holt's Electrical ToolboxMike Holt's Electrical ToolboxFree4.6★ (197)NoNoAug 2026
4Electrician's SidekickElectrician's SidekickFree3.5★ (16)NoNoMay 2026
5Southwire® Voltage Drop CalcSouthwire® Voltage Drop CalcFree4.6★ (1.5K)NoNoSep 2026
6FILL ◦ Conduit Fill CalculatorFILL ◦ Conduit Fill CalculatorFree4.0★ (3)NoYesSep 2026
7TrueFill: Conduit FillTrueFill: Conduit FillFree—NoNoJul 2026
8Wire Color CodeWire Color CodeFree4.6★ (999)NoYesSep 2026

Top Picks for Conduit Fill Tracker

Southwire® Conduit Fill Calc#1

Southwire® Conduit Fill Calc by Southwire Company

Editor's Choice
🔧 Utilities
4.5😊(746 ratings)
Free
Southwire® Conduit Fill Calc screenshot 1
Southwire® Conduit Fill Calc screenshot 2
Southwire® Conduit Fill Calc screenshot 3

This tool assists electricians, engineers, and contractors in determining the correct conduit size based on NEC guidelines. It calculates conduit fill percentages and jam probability, saving time compared to manual calculations.

What We Love

  • 🚀 Quick and easy calculations
  • 👍 User-friendly interface with spin wheel controls
  • 📊 Shows actual fill percentage and NEC compliance
  • 🔧 Ability to add multiple wire sizes simultaneously
  • 💾 Customizable wire data entry
  • ⚡ Saves significant time on job sites
  • 🎯 Accurate calculations (when working properly)
  • 📱 Convenient mobile access to conduit fill information

Room to Improve

  • ⚠️ Accuracy issues reported by multiple users
  • ❌ Limited wire gauge options (missing 16 & 18 AWG)
  • 🔄 Changing conduit type erases conduit size
  • 📉 Jam probability calculations unreliable
  • 🗑️ No data persistence between calculations
  • 🐛 Blank screen crashes on older versions
  • ⚠️ Discrepancies with NEC standards calculations

More Conduit Fill Tracker apps to explore

FAQ about Conduit Fill Tracker

What are the best conduit fill tracker apps for iPhone?
Southwire® Conduit Fill Calc tops our conduit fill tracker apps ranking as of September 2026, with a 4.5-star average from 746 App Store ratings, and it's free to download.
Yes — 19 of the top conduit fill tracker apps we rank are free to download, including Southwire® Conduit Fill Calc and Conduit Fill Capacity Calculator.
Southwire® Conduit Fill Calc has no ads and has no in-app purchases, according to its App Store listing as of September 2026.
We track 250+ conduit fill tracker apps on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.
This app helps electricians, engineers, and contractors determine the correct conduit size by calculating the conduit fill percentage and jam probability according to NEC guidelines. It simplifies the process of answering the question, 'What size conduit do I use?'
Key features include calculating conduit fill percentages and jam probability based on NEC guidelines, easy navigation, and the ability to email your calculation results with a single click. It eliminates the need for manual calculations or referencing the NEC book.