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Best Voltage Drop & Wire Size Apps

244+ iOS apps curated and reviewed

4.5 avg rating
14 free apps
Updated September 2026

With an average user rating of 4.5★, the voltage drop & wire size category is one of the App Store's strongest. Browse all 244+ apps we track, sorted so the most loved ones surface first.

Compare top Voltage Drop & Wire Size Apps (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Voltage Drop & Wire SizeVoltage Drop & Wire SizeFree5.0★ (1)NoYesSep 2026
2WireSizer - DC Voltage DropWireSizer - DC Voltage Drop$4.994.5★ (226)NoNoSep 2026
3Southwire® Voltage Drop CalcSouthwire® Voltage Drop CalcFree4.6★ (1.5K)NoNoSep 2026
4Wire Gauge & Size CalculatorWire Gauge & Size CalculatorFree4.9★ (13)YesYesSep 2026
5WCW Voltage Drop CalculatorWCW Voltage Drop CalculatorFree3.5★ (2)NoNoMay 2026
6Voltage Drop Calc NEC & IECVoltage Drop Calc NEC & IECFree—NoYesAug 2026
7Prysmian Group Voltage DropPrysmian Group Voltage DropFree5.0★ (6)NoNoMay 2026
8Voltage Drop Calculator.Voltage Drop Calculator.Free4.6★ (410)YesYesSep 2026

Top Picks for Voltage Drop & Wire Size

WireSizer - DC Voltage Drop#2

WireSizer - DC Voltage Drop by Juggernaut Technology, Inc.

Wire Gauge & Size Calculator
Strong Contender
🔧 Utilities
4.5😊(226 ratings)
$4.99
WireSizer - DC Voltage Drop screenshot 1
WireSizer - DC Voltage Drop screenshot 2
WireSizer - DC Voltage Drop screenshot 3
WireSizer - DC Voltage Drop screenshot 4
WireSizer - DC Voltage Drop screenshot 5
WireSizer - DC Voltage Drop screenshot 6

This app quickly calculates the correct DC wire gauge needed for any circuit. Simply input voltage, current, and length to determine the optimal wire size, considering voltage drop and ampacity limits. It's suitable for various DC systems up to 60 VDC.

What We Love

  • 👍 Simple and easy to use
  • 🚀 Quick calculations
  • 💡 ABYC-based calculations
  • 👍 Interactive interface
  • 👍 Essential tool for electrical projects
  • 💡 Handy material list
  • 👍 Accurate for DC calculations
  • 👍 Useful for marine electrical work
  • 👍 Great for DIYers
  • 👍 Saves time
  • 👍 Intuitive app
  • 👍 Good for low voltage wiring

Room to Improve

  • ⚠️ Limited to 50VDC
  • ⚠️ No AC calculations
  • ⚠️ Lacks advanced features
  • ⚠️ Some users find it useless
  • ⚠️ Voltage drop percentage requires conversion
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 Voltage Drop & Wire Size apps to explore

FAQ about Voltage Drop & Wire Size

What are the best voltage drop & wire size apps for iPhone?
Voltage Drop & Wire Size tops our voltage drop & wire size apps ranking as of September 2026, with a 5.0-star average from 1 App Store ratings, and it's free to download.
Yes — 14 of the top voltage drop & wire size apps we rank are free to download, including Voltage Drop & Wire Size and Southwire® Voltage Drop Calc.
Voltage Drop & Wire Size has no ads and offers in-app purchases, according to its App Store listing as of September 2026.
We track 244+ voltage drop & wire size apps on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.
Voltage Drop & Wire Size supports DC, single-phase AC, split-phase 120/240, and three-phase AC systems. It also accommodates both NEC/AWG and BS-style/Metric workflows.
Yes, you can save your calculations with Voltage Drop & Wire Size. Saved calculations can be reopened later, and you can add notes to keep track of specific jobs.