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Best Wire Sizing Apps

249+ iOS apps curated and reviewed

4.6 avg rating
14 free apps
Updated October 2026

Finding the right wire sizing apps can be overwhelming with so many options. We've analyzed 249+ apps to bring you the best choices for 2026, from free options to premium solutions with advanced features.

Compare top Wire Sizing Apps (October 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Southwire® Voltage Drop CalcSouthwire® Voltage Drop CalcFree4.6★ (1.5K)NoNoOct 2026
2Wire Gauge & Size CalculatorWire Gauge & Size CalculatorFree4.9★ (13)YesYesSep 2026
3Mike Holt's Electrical ToolboxMike Holt's Electrical ToolboxFree4.6★ (197)NoNoAug 2026
4WireCalc - Wire SizingWireCalc - Wire Sizing$7.99—NoNoOct 2026
5DC Wire SizerDC Wire Sizer$2.995.0★ (24)NoNoOct 2026
6WireSizer - DC Voltage DropWireSizer - DC Voltage Drop$4.994.5★ (226)NoNoSep 2026
7WireGauge: DC Wire SizeWireGauge: DC Wire Size$4.99—NoNoAug 2026
8Lead Wire AmpacityLead Wire AmpacityFree—NoNoJun 2026

Top Picks for Wire Sizing

Southwire® Voltage Drop Calc#1

Southwire® Voltage Drop Calc by Southwire Company

Southwire Calculator
Editor's Choice
🔧 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
Wire Gauge & Size Calculator#2

Wire Gauge & Size Calculator by V PUGAZHENTHI

AWG & mm² · Voltage Drop, Amps
Strong Contender
🔧 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.

Mike Holt's Electrical Toolbox#3

Mike Holt's Electrical Toolbox by Mike Holt Enterprises

Electrical Power Calculator
Worth Considering
🔧 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.

What We Love

  • 👍 Great app for electricians
  • 💡 Provides code article references
  • 👍 Useful for on-the-spot reference
  • 👍 Excellent for verifying calculations
  • 👍 Helpful for exam preparation
  • 👍 Simplifies the trade
  • 👍 Great jobsite resource
  • 👍 Handy tool for electricians
  • 👍 Teaches code in an advanced way
  • 👍 Free app with needed features
  • 👍 Helps size A/C circuits correctly
  • 👍 American made

Room to Improve

  • 🐛 Emailing results not working
  • 🐛 Outdated information
  • 🐛 Load calc a little clunky
  • 🐛 Content setup needs overhaul
  • 🐛 Video series lacks completion system
  • 🐛 Bug with widescreen video exit
  • 🐛 Not user-friendly
  • 🐛 Outdated app needs refinement
  • 🐛 Previous calculation data not erased
  • 🐛 App is straight garbage (paid)

More Wire Sizing apps to explore

FAQ about Wire Sizing

What are the best wire sizing apps for iPhone?
Southwire® Voltage Drop Calc tops our wire sizing apps ranking as of October 2026, with a 4.6-star average from 1.5K App Store ratings, and it's free to download.
Yes — 14 of the top wire sizing apps we rank are free to download, including Southwire® Voltage Drop Calc and Wire Gauge & Size Calculator.
Southwire® Voltage Drop Calc has no ads and has no in-app purchases, according to its App Store listing as of October 2026.
We track 249+ wire sizing apps on the iOS App Store as of October 2026, ranked by rating, recency, and analysis of real user reviews.

Related searches

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