Electrical Calculations

Contains adsIn-app purchases
35.6K reviews
Content rating
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About this app

Electrical Calculations is the best app in the electrical sector, it has many calculations that can help you in your work. It can not miss in your smartphone!

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.

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.

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.

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.


Kindly don't use the Evaluation System for reporting bugs. Instead, please contact me directly.


FAQ: https://www.gallinaettore.com/android_apps/faq-en/
Updated on
Jul 11, 2022

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
35.6K 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).
26 people found this review helpful
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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.
42 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.
Barry McArdle
August 2, 2022
Just got the paid version. Good app but I thought for all that money that it would show you how it calculated its values as well as giving you an answer. Yes you can go off looking for the formulas. Especially when you print off your calculations. All it does is basically does a screenshot with input values and result. Does not show you how it got to the value through formulas so no evidence to back up your print out. Shame, think that is the only thing it's lacking. Maybe future update?
7 people found this review helpful
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What's new

* New: Help for each calculation is available
* New: Neutral current
* New: Power distribution systems (TT, TN, IT)
* New: Decoding of capacitor code
* Imp: Cold start times have been improved
* Imp: Improved the calculation of the ampacity of the bus bars
* Add: "LFNC-C" in "Conduit fill" (NEC)
* Mod: Calculation of the operating current also accepts mixed loads
* Mod: Improved the capacitor tolerance table
* Mod: Improved the sum of resistors and capacitors