Best Conduit Calculator Apps

248+ iOS apps curated and reviewed

4.4 avg rating
19 free apps
Updated September 2026

The best conduit calculator apps on iPhone average 4.4★ across 248+ titles — we've ranked them by what real users actually keep on their phones. Updated September 2026.

Compare top Conduit Calculator Apps (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Southwire® Conduit Fill CalcSouthwire® Conduit Fill CalcFree4.5★ (746)NoNoSep 2026
2Easy Bend: Conduit BendingEasy Bend: Conduit BendingFree4.2★ (5)NoYesSep 2026
3Electrician Handy ToolElectrician Handy ToolFree4.1★ (21)NoYesMay 2026
4ConduitLab: NEC CalculatorConduitLab: NEC CalculatorFree5.0★ (3)NoYesJun 2026
5Conduit Fill Capacity CalculatorConduit Fill Capacity CalculatorFree4.0★ (1)NoNoAug 2026
6Conduit Fill Pro - ElectricianConduit Fill Pro - ElectricianFree was $2.99NoYesAug 2026
7WireSpan: Conduit Fill CalcWireSpan: Conduit Fill CalcFreeNoNoSep 2026
8BendPro: Conduit Bending CalcBendPro: Conduit Bending CalcFreeNoNoJun 2026

Top Picks for Conduit Calculator

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 Calculator apps to explore

FAQ about Conduit Calculator

What are the best conduit calculator apps for iPhone?
Southwire® Conduit Fill Calc tops our conduit calculator 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 calculator apps we rank are free to download, including Southwire® Conduit Fill Calc and Easy Bend: Conduit Bending.
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 248+ conduit calculator 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.

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