Electrical Tools Pro

About Electrical Tools Pro

A smarter electrical calculation app which works offline.


Ohm's law:
Applicable for DC and single phase AC (Impedance based calculation only).

AC Circuits and Machines:
Applicable for three and single phase AC circuits and machines.

Transformer Calculation:
Applicable for three and single phase transformer calculations.

Protection Relay Calculation:
Calculate all parameters for different IEC IDMT curves.

IDMT Relay Settings:
Calculate TMS value for different IEC IDMT curves and fault current.

Distance Relay Settings:
Calculate the various zone settings easily for distance protection relays.

Error Calculator:
Evaluate error parameters for normal and analog meter types.

Resistance vs Temperature:
Evaluate resistance and temperature relation for different materials.


Simple and effective calculation with user guidelines in the info tabs.
Can keep any parameter as the unknown.
Broad unit selection and unit changer after evaluation.
Promptly made messages during evaluation.
User selectable decimal digits.

Our team encourage suggestions, feedback and complaints to improve our product.

be Smarter and share Smartness.