Electrical Calculations

Contains adsIn-app purchases
4.3
47.2K reviews
1M+
Downloads
Content rating
Everyone
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About this app

Electrical Calculations is professional calculation software designed for installers, designers, and electricians. It is a versatile and reliable tool, capable of generating clear and informative reports in PDF and printable formats.

Supported standards: IEC (International Electrotechnical Commission), CEI (Comitato Elettrotecnico Italiano), NEC (National Electrical Code), CEC (Canadian Electrical Code).

The application offers a wide range of calculations for the fundamental aspects of an electrical system, wiring diagrams, and formulas.

Main calculations:
Wire size, voltage drop, current, voltage, active / apparent / reactive power, power factor, resistance, Maximum wire length, Current carrying capacity of insulated conductors / bare conductors / busbar, Conduit fill, Sizing the circuit breaker, Admissible let-through energy of the cable (K²S²), Operating current, Reactance, Impedance, Power factor correction, Power factor correction of transformer MV/LV, Capacitor power at different voltage, Earthing system, Short circuit current, Conductor resistance, Calculation of the cable temperature, Power losses in cables, Temperature sensors (PT/NI/CU, NTC, Thermocouples…), Analog signal values, Joule effect, Fault current of strings, Risk assessment of overvoltages with atmospheric origin.

Electronic calculations:
Resistor / Inductor color code, Fuses, Sum resistors / capacitors, Resonant frequency, Voltage divider, Current divider, Zener diode as voltage stabiliser, Resistance to reduce voltage, Resistance for led, Battery life, Primary/Secondary winding of transformer, Antenna length, CCTV Harddrive/Bandwidth calculator.

Calculations concerning the motor:
Efficiency, Motor from three-phase to single-phase, Capacitor start motor single-phase, Motor speed, Motor slip, Maximum torque, Full-load current, Diagrams of the three-phase motor, Insulation class, Motor connections, Motor terminals marking.

Conversions:
Δ-Y, Power, AWG/mm²/SWG table, Imperial / metric conductor size comparison, Section, Length, Voltage (Amplitude), sin/cos/tan/φ, Energy, Temperature, Pressure, Ah/kWh, VAr/µF, Gauss/Tesla, RPM-rad/s-m/s, Frequency / Angular velocity, Torque, Byte, Angle.

Resources:
Fuses application categories, UL/CSA fuse class, Standard resistor values, Tripping curves, Table of cables reactance, Table of resistivity and conductivity, Table of unitary voltage drop, Dimensions and weight of cables, IP/IK/NEMA protection classes, Atex marking, Appliance classes, CCTV resolutions, Thermocouple colour codes and data, ANSI standard device numbers, Electrical symbols, Electricity around the world, Plug and socket types, IEC 60320 connectors, C-Form Sockets (IEC 60309), Nema connectors, EV charging plugs, Wiring color codes, SI Prefixes, Units of measurement, Pipes dimensions.

Pinouts:
Ethernet wiring (RJ-45), Ethernet with PoE, RJ-9/11/14/25/48, Scart, USB, HDMI, VGA, DVI, RS-232, FireWire (IEEE1394), Molex, Sata, Apple Lightning, Apple Dock Connector, DisplayPort, PS/2, Fiber optic color code, led, Raspberry PI, ISO 10487 (Car audio), OBD II, XLR (Audio/DMX), MIDI, Jack, RCA color coding, Thunderbolt, SD Card, Sim Card, Display LCD 16x2, IO-Link.

The app also contains a very useful form.
Updated on
Sep 29, 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
Financial info, App activity and 2 others
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

4.4
45.8K reviews
A Google user
September 16, 2018
lots of formulas, calculators, etc... . seems like it could be excessive and too wide ranging for any one individuals needs, but i suppose better too much than too little. . .. would like to be able to play with a few features that don't have the lock key symbol next to them, but when i click on them I'm taken to pop up screens soliciting for purchase of the app. probably more an oversight than a nag. would've liked to have seen one or two of the definitions just to see the format, but they're all locked (example -surely unlocking ohms law definition wouldn't be an issue - I'm sure anyone looking at an app like this already knows it by heart).
53 people found this review helpful
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A Google user
March 20, 2019
I gave it 2 stars instead of 1, only because if you pay for pro it would be useful and overall they don't deserve 1 star. Very few things you can do without paying pro. They have things in the app that don't have a key icon(requires pro) and then when you try to use it, it says you need pro. Frankly if they didn't lie about what you get, I'd give maybe 3-4 stars. Pro seems like it would be a 5 star app.
22 people found this review helpful
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Ettore Gallina
March 20, 2019
Hi, please contact us and let us know which calculation does not show the key but it is only for the professional version. We are always willing to solve problems.
Steve Conyers
October 15, 2020
Useless. Don't bother. I uninstalled it within 5 minutes. Can't use any features without getting bombarding with full-screen ads every time you try to calculate something. You need to dismiss the ads before you can see each result. The impedance calculator is worthless, it's only a series/parallel R-equiv calculator. There aren't any fields to input C, L, or Freq values. It literally can't do the most basic RLC calculations. Garbage.
78 people found this review helpful
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Ettore Gallina
October 15, 2020
Hello, we are sorry that the app is not to your liking. We appreciate your advice to improve our app.

What’s new

v11.0.2
* Fix: Crash when scrolling through installation types
* ReFix: Crash on some foldable devices
* Upd: General update of the languages