Best 277 Electrical Calculation Apps

210+ iOS apps curated and reviewed

4.6 avg rating
16 free apps
Updated May 2026

Electrical Calculations is the household name in 277 electrical calculation, but it's far from the only option. We track 210+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.

Top Picks for 277 Electrical Calculation

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
Electrical Calculator#3

Electrical Calculator by V PUGAZHENTHI

Electrical Tools & Formulas
Worth Considering
🔧 Utilities
4.6(462 ratings)
$3.99
Electrical Calculator screenshot 1
Electrical Calculator screenshot 2
Electrical Calculator screenshot 3
Electrical Calculator screenshot 4
Electrical Calculator screenshot 5
Electrical Calculator screenshot 6

This all-in-one electrical calculation app provides over 65 tools and formulas for electrical and electronics engineers, students, and professionals, covering a wide range of calculations from voltage and current to power and energy. With flexible unit selection and a simple interface, it enables fast and accurate calculations, supporting both USCS and SI units, and is a valuable resource for anyone working with electrical systems.

More 277 Electrical Calculation apps to explore

4
Ugly's Electrical References
Ugly's Electrical References
Ugly's Electrical References
by Informed Publishing
$12.99

This app is a comprehensive electrical reference guide that has been updated to align with the 2020 National Electrical Code. It offers a range of features such as calculators, interactive tools, and in-depth information for electricians, making it a valuable on-the-job resource.

📊 Productivity
(1.4K)
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.

🔧 Utilities
(197)
6
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.

🔧 Utilities
(46)
7
Master Electrician Ref. Lite
Master Electrician Ref. Lite
Master Electrician Ref. Lite
A handbook for electricians
Free

A comprehensive electronic pocket electrician reference guide for electrical professionals and enthusiasts, providing essential information, calculations, NEC tables, and safety manuals. Visit MasterSparky.com for more details and upgrade to the full version for extensive content covering NEC codes over various years.

📊 Productivity
(2.4K)
8
Electrical Calculator Plus
Electrical Calculator Plus
Electrical Calculator Plus
by Inch Calculator
Free

This application provides a comprehensive collection of electrical calculators and converters to compute various electrical properties, including Ohm's Law, current, power, voltage, and resistance. Download the app to access 26 tools that can help you with electrical calculations and conversions.

🔧 Utilities
(15)
9
Electrical Engineering - lite
Electrical Engineering - lite
Electrical Engineering - lite
60 calculations with circuits
Free

This application provides a comprehensive set of electrical calculators and converters, covering 60 calculations and 16 conversions, to help professionals and students easily solve complex electrical engineering problems. With its user-friendly interface and multiple unit options, it enables precise results and seamless handling of diverse units, making it an essential tool for anyone working with electrical circuits.

📚 Education
(248)
10
Electrical Calculator lite
Electrical Calculator lite
Electrical Calculator lite
60 Calculators & 16 Converters
Free
🔧 Utilities
(560)
11
Electrical Formulator
Electrical Formulator
Electrical Formulator
by Historycentral.com Inc
Free

This powerful electrical calculation tool offers hundreds of conversion and calculation tools to solve various electrical design and engineering challenges. It allows users to save, print, and share results, and access frequently used formulas, making it an essential utility for engineers, electricians, and energy professionals to work efficiently and accurately.

📊 Productivity
(1)
12
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!

🔧 Utilities
(1.3K)
13
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)
14
Ohm & Watt Law Electrical Calc
Ohm & Watt Law Electrical Calc
Ohm & Watt Law Electrical Calc
Volt,Current,Power,Resistance
Free

This electrical calculator helps users find missing variables of electricity, such as power, voltage, current, and resistance, by simply inputting two known values. Try it out to easily solve your electrical calculations and get accurate results.

🔧 Utilities
(49)
15
Calculator₊
Calculator₊
Calculator₊
Basic, Scientific, Plus Calc
Free

Try Calculator₊, the ultimate mathematics tool offering basic, scientific, and plus calculations. Ideal for homework, exams, and managing expenses, this app is like having a personal math tutor on your phone. Download now for easy and intuitive math solutions!

🔧 Utilities
(1.7M)
16
Electrical Toolkit by HCP
Electrical Toolkit by HCP
Electrical Toolkit by HCP
Conduit + load calcs for pros
Free

A comprehensive electrical calculator and conduit bending tool designed for professionals, providing common calculations and conversions in a clean and simple interface for efficient work. Download it to streamline your electrical work and stay ahead with upcoming updates adding more tools.

🔧 Utilities
(18)
17
Ohm's Law
Ohm's Law
Ohm's Law
by Creature Code Mobile, LLC
Free

Calculate electrical values easily with this Ohm's Law Calculator. Input two known values to quickly determine voltage, current, resistance, or power in any electrical circuit. Start calculating now!

🔧 Utilities
(165)
18
Electrical Engineering Pack
Electrical Engineering Pack
Electrical Engineering Pack
65 Calculators & 16 Converters
$4.99

This comprehensive electrical engineering tool pack offers a wide range of calculators and converters for electrical engineers, electricians, and students, covering various aspects of electrical calculations and unit conversions. With over 60 calculators and 16 converters, users can easily perform calculations and conversions, and get instant results that update automatically when input values or units change, try it now and streamline your electrical engineering tasks.

📚 Education
(74)
19
Calculator‰
Calculator‰
Calculator‰
Default Calculator
Free

Experience a beautifully designed calculator with large buttons and a clear display for quick and efficient calculations. Try it now to discover the simplicity and ease of use for your everyday arithmetic needs.

🔧 Utilities
(404K)
20
Electrical Calc Elite
Electrical Calc Elite
Electrical Calc Elite
NEC Code Calculator
$19.99

This NEC code calculator app is designed for electrical professionals to solve common electrical calculations based on National Electric Codes, providing quick and accurate solutions for code-related problems. It offers a wide range of calculations, including wire sizes, voltage drop, conduit sizing, and more, making it a valuable tool for electricians, contractors, and engineers.

🔧 Utilities
(124)