Best Ampacity Apps

217+ iOS apps curated and reviewed

4.6 avg rating
20 free apps
Updated September 2026

Looking for free ampacity apps? 20 of our 217+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.

Compare top Ampacity Apps (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Prysmian Group Conductor AmpsPrysmian Group Conductor AmpsFree5.0★ (3)NoNoMay 2026
2Mike Holt's Electrical ToolboxMike Holt's Electrical ToolboxFree4.6★ (197)NoNoAug 2026
3Southwire® Voltage Drop CalcSouthwire® Voltage Drop CalcFree4.6★ (1.5K)NoNoSep 2026
4AWG Calculator: Wire SizeAWG Calculator: Wire SizeFree4.7★ (69)NoYesSep 2026
5NG Wire: NEC Ampacity & FillNG Wire: NEC Ampacity & FillFree5.0★ (9)NoYesAug 2026
6Ampacity UtilitiesAmpacity UtilitiesFreeNoNoMay 2026
7Wire Size & Ampacity CalcWire Size & Ampacity CalcFreeNoYesAug 2026
8Lead Wire AmpacityLead Wire AmpacityFreeNoNoJun 2026

Top Picks for Ampacity

Prysmian Group Conductor Amps#1

Prysmian Group Conductor Amps by Prysmian Group

Electrical Conductor Ampacity
Editor's Choice
📊 Productivity
5.0(3 ratings)
Free
Prysmian Group Conductor Amps screenshot 1
Prysmian Group Conductor Amps screenshot 2
Prysmian Group Conductor Amps screenshot 3
Prysmian Group Conductor Amps screenshot 4
Prysmian Group Conductor Amps screenshot 5

This tool helps electrical professionals quickly determine conductor ampacities based on various temperature ratings and electrical codes. It supports different conductor types, materials, and ambient temperature adjustments for accurate calculations.

Mike Holt's Electrical Toolbox#2

Mike Holt's Electrical Toolbox by Mike Holt Enterprises

Electrical Power Calculator
Strong Contender
🔧 Utilities
4.6(197 ratings)
Free
Mike Holt's Electrical Toolbox screenshot 1
Mike Holt's Electrical Toolbox screenshot 2
Mike Holt's Electrical Toolbox screenshot 3
Mike Holt's Electrical Toolbox screenshot 4

This app provides essential calculations for electricians, inspectors, contractors, and engineers. It helps determine conductor sizing, circuit protection, race sizing, and grounding conductor sizes for various electrical equipment and services.

Southwire® Voltage Drop Calc#3

Southwire® Voltage Drop Calc by Southwire Company

Southwire Calculator
Worth Considering
🔧 Utilities
4.6😐(1.5K ratings)
Free
Southwire® Voltage Drop Calc screenshot 1
Southwire® Voltage Drop Calc screenshot 2
Southwire® Voltage Drop Calc screenshot 3
Southwire® Voltage Drop Calc screenshot 4
Southwire® Voltage Drop Calc screenshot 5
Southwire® Voltage Drop Calc screenshot 6

Calculate the appropriate wire size for electrical circuits. This tool helps determine wire size based on voltage drop and current carrying capacity, ensuring compliance with NEC ampacity limits.

What We Love

  • 🚀 Quick and useful
  • 🚀 Great Quick Reference
  • 👍 A must have app for electricians
  • 👍 Love These

Room to Improve

  • 🐛 Motor starting Voltage drop
  • 🐛 Useless!
  • 🐛 Won't work

More Ampacity apps to explore

FAQ about Ampacity

What are the best ampacity apps for iPhone?
Prysmian Group Conductor Amps tops our ampacity apps ranking as of September 2026, with a 5.0-star average from 3 App Store ratings, and it's free to download.
Yes — 20 of the top ampacity apps we rank are free to download, including Prysmian Group Conductor Amps and Mike Holt's Electrical Toolbox.
Prysmian Group Conductor Amps has no ads and has no in-app purchases, according to its App Store listing as of September 2026.
We track 217+ ampacity apps on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.
Prysmian Group Conductor Amps supports code selections for NEC® 2011, 2014, and 2017. This ensures compliance with different versions of the National Electrical Code.
Yes, the app allows you to choose between copper and aluminum conductor materials for your ampacity calculations. It also supports both metric and standard conductor sizes.

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