Best Ampacity Apps

151+ iOS apps curated and reviewed

4.4 avg rating
19 free apps
Updated May 2026

Looking for free ampacity apps? 19 of our 151+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.

Top Picks for Ampacity

AWG Calculator: Wire Size#1

AWG Calculator: Wire Size by Melchisedec Martinez Rodriguez

Electrician Wire Tool
Editor's Choice
🔧 Utilities
4.6(67 ratings)
FreeIn-App Purchases
AWG Calculator: Wire Size screenshot 1
AWG Calculator: Wire Size screenshot 2
AWG Calculator: Wire Size screenshot 3
AWG Calculator: Wire Size screenshot 4
AWG Calculator: Wire Size screenshot 5

This electrical calculation tool simplifies wire size and other calculations following NEC standards, making it ideal for professionals and DIYers. Download now and try it for free for a month to streamline your electrical design and installation work.

Southwire® Voltage Drop Calc#2

Southwire® Voltage Drop Calc by Southwire Company

Southwire Calculator
Strong Contender
🔧 Utilities
4.6😐(1.4K 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 right wire size for your electrical circuit with this voltage drop calculator. Ensure proper conductivity while meeting specific voltage drop limits and NEC ampacity standards. Perfect for AWG and KCMIL sizes in various applications.

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
Prysmian Group Conductor Amps#3

Prysmian Group Conductor Amps by Prysmian Group

Electrical Conductor Ampacity
Worth Considering
📊 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 electrical conductor ampacity calculator provides a quick and easy way for contractors, electricians, and other electrical professionals to determine conductor ampacities for various temperature ratings. With this tool, users can select from different code versions, conductor materials, and temperature ratings to get accurate ampacity values.

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4
Electrical Calculations
Electrical Calculations
Electrical Calculations
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Free
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5
Mike Holt's Electrical Toolbox
Mike Holt's Electrical Toolbox
Mike Holt's Electrical Toolbox
Electrical Power Calculator
Free

An industry-leading electrical power calculator app designed by Mike Holt for electricians, inspectors, contractors, and engineers. Perform conductor sizing, circuit protection, race sizing, and more with this practical and useful tool.

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6
Southwire® Conduit Fill Calc
Southwire® Conduit Fill Calc
Southwire® Conduit Fill Calc
by Southwire Company
Free

This application helps electricians, engineers, and contractors quickly determine the proper conduit size to use based on NEC guidelines, including fill percentages and jam probability. Simply input conduit type, size, and conductors, and the app will calculate the conduit fill percentage for you.

🔧 Utilities
(679)
7
Ohms Law Calc.
Ohms Law Calc.
Ohms Law Calc.
Wire Size & Voltage Drop
Free

Ohms Law Calc. is a comprehensive app featuring 62 electrical calculators and formulas for various calculations such as voltage, current, resistance, and power. Explore a wide range of tools including voltage drop, power factor, transformer calculator, and more!

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8
Ampacity Utilities
Ampacity Utilities
Ampacity Utilities
by Ontec Systems (PTY) Ltd
Free
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9
NG Wire
NG Wire
NG Wire
NG Orange LLC
Free

NG Wire™ is a streamlined iPhone and iPad app for electrical construction professionals, offering quick access to essential National Electric Code® (NEC®) tables for wire, conduit, and motor data calculations. Simplifying daily tasks, it provides accurate results on-the-go, eliminating the need for bulky code books. Access the app via monthly or annual subscription for updated NEC® data and calculations. For more information and assistance, visit: https://ngorange.com/contact-us.

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10
Electrical Calculator lite
Electrical Calculator lite
Electrical Calculator lite
60 Calculators & 16 Converters
Free
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(565)
11
Watts Amps Volts  Calculator
Watts Amps Volts  Calculator
Watts Amps Volts Calculator
Electrical power calculator
Free

This electrical power calculator allows users to calculate and convert between various electrical units, including Watts, Amps, Volts, kW, and Power Factor, for single and three-phase electrical formulas. Simply enter the required values and press calculate to get the desired result.

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12
Ampace Andes
Ampace Andes
Ampace Andes
Power Your Life
Free

This application allows users to easily connect, monitor, and control their devices, ensuring a seamless and efficient experience. Download the app to effortlessly manage your devices, upgrade firmware, and customize settings to power your life.

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13
AmPac Business Capital
AmPac Business Capital
AmPac Business Capital
by AMPAC TRI STATE CDC, INC.
Free

This platform supports start-ups and small businesses with financial, technical, and mentoring resources to foster entrepreneurship and innovation. Join the community to access a comprehensive resource center and take your business to the next level.

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14
AmpLookUp
AmpLookUp
AmpLookUp
Underground Ampacity
Free

Simplify your underground electrical design with this tool that quickly looks up NEC data for ampacity calculations, helping you avoid tedious manual lookups and ensure accurate sizing, especially for high-demand applications. Get started with your duct bank calculations today.

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(2)
15
Ampere Battery Charging Check
Ampere Battery Charging Check
Ampere Battery Charging Check
Test charge speed,wires,cables
Free

Check the charging speed of your battery with various chargers, wires, and cables using the ultimate companion app for battery-related tasks. Compare different charging sources, track usage times, and find the best charger for your device. Visit the app's help page for detailed instructions and watch the functionality overview video to see it in action!

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(369)
16
Charger Master
Charger Master
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Charging play and sound
Free

This application provides charging play and sound features, including various charging sounds and animations, automatic charging tests, and detailed information about charging parameters. It helps users optimize their charging experience, find the best charger, and offers additional features like battery life estimation, maintenance tips, and home screen widgets to enhance user experience. Try it out to make your charging routine more enjoyable and efficient!

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17
ConduitLab: NEC Calculator
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18
City Electric Supply
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City Electric Supply
Local Electric Wholesale
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Take control of your electrical wholesale experience with this mobile app, offering unlimited access to essential features like contactless order signing, exclusive promotions, and secure account management. With the app, you can efficiently manage your account, access valuable resources, and stay connected with the company, all from the palm of your hand.

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19
ElectriCalc: NEC Calculator
ElectriCalc: NEC Calculator
ElectriCalc: NEC Calculator
Wire Size, Voltage Drop, AWG
Free
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20
A NEC® Quick Reference
A NEC® Quick Reference
A NEC® Quick Reference
by Alan Cave
$1.99

This application provides quick access to commonly used information from the National Electrical Code, making it a valuable tool for electrical engineers and electricians. It allows users to easily reference essential code information while working in the office or at a construction site.

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