This is an Ohm's Law Calculator with a built-in mini-guide to refer to if required.

The calculator is very easy to use, enter two known values, select the units, press 'Calculate' and the other two values will be displayed instantly!

The guide contains 7 parts:

• Ohm's law
• Watt's law
• Adding resistances
• Voltage formulae
• Current formulae
• Resistance formulae
• Power formulae

If you want to be able to understand how the Ohm's law calculations are carried out, or would like a handy reference guide, this is the app for you!

What’s New

Version 2.4

We've made some small tweaks for iOS 12.

Ratings and Reviews

5.0 out of 5
6 Ratings

6 Ratings

Pulsey ,

Simple app with no adverts

I’ve downloaded 3 of these with annoying adverts. This is simple and free. Well done developers.

heudbehc ,


Love the app helps so much but it would be better if you added more about mech mod safety

jurek s ,

Mr Combi apps

All are brilliant, easy to use accurate and low cost, I have the bundle to save money

App Privacy

The developer, Mr Combi Training, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

More By This Developer

You May Also Like