The official US-based National Electrical Code® (NEC) ElectriCalc® Pro from Calculated Industries for iOS is a full-featured emulation of our popular #5065/#5070 models.

And while perhaps obvious, if you change from an iOS device to a non-iOS device, you WILL need to buy a new license as they are incompatible.

In addition to built-in help, the ElectriCalc Pro electrical code calculator is fully compliant with 2017, 2014, 2011, 2008, 2005, 2002, 1999, and 1996 NEC®.

Electrical Contractors, Designers, Electricians and Lighting Specialists solve tough electrical calculations in seconds and deliver those solutions in conformance with the latest NEC®.

The ElectriCalc Pro is a complete electrical reference tool that will save time, trouble and money.

•All the functionality and solutions of the handheld ElectriCalc Pro calculator and optimized for the iPhone/iPod Touch user
•Built-in help – just press and hold the desired key for full, clear definitions, explanations and examples of keystrokes
•A complete User’s Guide is available free at (go to ElectriCalc Pro support link below)
•Swipe left to right to edit an entry (backspace)

ElectriCalc Pro Solutions:
•Wire Sizes
•Voltage Drop
•Conduit Sizing
•Motor Full-Load Amps
•Fuse and Breaker Sizes
•NEC® Table Number displayed when performing Wire Size calculations
•Service and Equipment Grounding Conductor Sizes
•Enter BTU to find Kilowatts per Hour
•Enter Kilowatts per Hour to find BTU
•Parallel Resistance
•Ohm’s Law Calculations – enter any two values to solve for the third
•Circular MILS wire sizes
Description of ElectriCalc Pro Calculations:
•Work directly in and convert between Amps, Watts, Volts, Volt-Amps, kVA, kW, PF% and EFF% and DC Resistance
•Calculate wire sizes per NEC® 310-16 and 310-17; Copper or aluminum, 3Ø/1Ø, 60°C, 75°C, 90°C insulation ratings and 100% or 125% of ampacity. Can also adjust wire sizes for ambient temperatures other than 30◦ C and for more than three wires in a raceway
•Integrated voltage drop solutions. Find minimum VD wire size, maximum Length for any given wire size, drop percentage, actual number and percentage of Volts dropped
•Conduit sizing for 12 types of conduit. Per 2005 and 2008 NEC® Table C1-C12, find sizing of all common conduits for any combination for #THW, #XHHW and # THHN wires. Plus, gives fill percentages, cross-sectional areas, remaining areas and more
•Find Motor Full-Load Amps per current NEC®. Works in 1Ø and 3Ø with the new expanded tables for 3Ø induction (to 500 hp) synchronous (to 200 hp) and DC motors per NEC® 430-247, 430- 248 and 430-250.
•Calculates Fuse and Breaker Sizes. Solves fuse and breaker sizes per NEC® 430-52
•Parallel and derated wire sizing
•Parallel Resistance
•NEC Table number displays when performing Wire Size calculations
•Sizes overload protection per NEC® 430-32
•Automatically finds NEMA starter sizes.
•Calculates service and equipment grounding conductor sizes per NEC® 250-122 and 250-66; plus works directly in electrical terms.
•Enter BTU to find Kilowatts per Hour
•Enter Kilowatts per Hour to find BTU
•Ohm’s Law Calculations – enter any two values to solve for the third.
•Enter, solve or convert to Circular MILS wire sizes

Note: Electrical math is universal, however, code-based sizing solutions are based on the US National Electrical Code® (NEC); users in other countries should check with their local Code Officials for applicability.

ElectriCalc® is a registered trademark of Calculated Industries, Inc.

What’s New

Version 10.5.0

Support for NEC 2020
New menu/navigation

Ratings and Reviews

5.0 out of 5
5 Ratings

5 Ratings

سروری ,


It's a perfect app.

Harley1234554321 ,

Just like the handheld Device

I have been waiting for this to come out for a long time. I have been searching for it quite often. This app operates just like the real thing. Thank you for finally offering it. It does everything I need it to do. The original device does not do conduit fill but it would be a good addition. I texted a friend of mine that the app was available and he also downloaded it within 1 minute of the text. Thank you, Thank You.

YellowJacket83EE ,

Great Electrical Technical App

I have owed the hand held calculator for years and I swear by it. I am able to design wherever I am with this. The price is well worth it. My ability to solve client issues on the spot only enhances their faith in me. There is a slight learning curve, but once you learn the process, it will be seamless.


Calculated Industries, Inc.
22.8 MB

Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating
Infrequent/Mild Sexual Content and Nudity
Infrequent/Mild Mature/Suggestive Themes


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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