Best Wire Size Apps

249+ iOS apps curated and reviewed

4.7 avg rating
13 free apps
Updated November 2026

From beginner-friendly picks to power-user tools, our wire size list covers 249+ iPhone apps updated through November 2026. Compare ratings, prices, and screenshots in one place.

Compare top Wire Size Apps (November 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Wire Gauge & Size CalculatorWire Gauge & Size CalculatorFree4.9★ (13)YesYesOct 2026
2Southwire® Conduit Fill CalcSouthwire® Conduit Fill CalcFree4.5★ (773)NoNoNov 2026
3Southwire® Voltage Drop CalcSouthwire® Voltage Drop CalcFree4.6★ (1.5K)NoNoNov 2026
4AWG Calculator: Wire SizeAWG Calculator: Wire SizeFree4.7★ (70)NoYesOct 2026
5Electric Ref: Wire Size & FillElectric Ref: Wire Size & FillFree—NoYesNov 2026
6Wire Size & Ampacity CalcWire Size & Ampacity CalcFree—NoYesNov 2026
7Wire Size CalcWire Size Calc$0.995.0★ (1)NoYesOct 2026
8WireCalc - Wire SizingWireCalc - Wire Sizing$3.99 was $7.99—NoNoOct 2026

Top Picks for Wire Size

Wire Gauge & Size Calculator#1

Wire Gauge & Size Calculator by V PUGAZHENTHI

AWG & mm² · Voltage Drop, Amps
Editor's Choice
🔧 Utilities
4.9(13 ratings)
FreeAds
Wire Gauge & Size Calculator screenshot 1
Wire Gauge & Size Calculator screenshot 2
Wire Gauge & Size Calculator screenshot 3
Wire Gauge & Size Calculator screenshot 4
Wire Gauge & Size Calculator screenshot 5
Wire Gauge & Size Calculator screenshot 6

This utility app calculates the minimum wire size needed for electrical installations based on voltage, current, distance, and allowable voltage drop. It supports various units and wire materials, ensuring safe and efficient power distribution for diverse applications.

4.5😊(773 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
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
  • 👍 Electrical Engineer
  • 👍 Awesome app
  • 👍 Safer
  • 👍 Useful
  • 👍 Handy
  • 👍 Great App
  • 👍 Dependable app
  • 👍 Electrician tech
  • 👍 Solid and simple to use app
  • 👍 Great app

Room to Improve

  • 🐛 Motor starting Voltage drop
  • 🐛 Useless!
  • 🐛 Won't work
  • 🐛 How to use
  • 🐛 Confused
  • 🐛 Bad app
  • 🐛 Bad
  • 🐛 Not applicable for Residential
  • 🐛 Electrician
  • 🐛 Terrible
  • 🐛 Not working
  • 🐛 What??
  • 🐛 Terrible
  • 🐛 Don't work
  • 🐛 Terrible
  • 🐛 Choice Between AWG and Metric wire Gauge
  • 🐛 Updated app not so simple
  • 🐛 The last version was better
  • 🐛 App
  • 🐛 Terrible
  • 🐛 Voltage drop calculator
  • 🐛 IOS 8
  • 🐛 One flaw
  • 🐛 Worst app ever
  • 🐛 Average

More Wire Size apps to explore

FAQ about Wire Size

What are the best wire size apps for iPhone?
Wire Gauge & Size Calculator tops our wire size apps ranking as of November 2026, with a 4.9-star average from 13 App Store ratings, and it's free to download.
Yes — 13 of the top wire size apps we rank are free to download, including Wire Gauge & Size Calculator and Southwire® Conduit Fill Calc.
Wire Gauge & Size Calculator shows ads and offers in-app purchases, according to its App Store listing as of November 2026.
We track 249+ wire size apps on the iOS App Store as of November 2026, ranked by rating, recency, and analysis of real user reviews.

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