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Ohmulator — Ohm's Law Calculator

By David Caddy

This app is only available on the App Store for iOS devices.


⌘ Makes Ohm's Law simple!

Ohmulator is a simple, yet robust, electric circuit calculator that enables you to quickly and easily find the unknown variables of a circuit.

Ohmulator allows you to easily adjust unit types on the fly (eg. milli Amps, Amps, kilo Amps), which means no prior conversion!

Enter two known variables (from: I = Current, R = Resistance, V = Voltage, P = Power), set preferred units, then Ohmulator will calculate and return the previously unknown values.

Also an Effective (total) Resistance calculator.

What two App Store reviewers had to say about Ohmulator:

"Great. Does what it says. Very good app. Stylish design." 5 Stars - Jamie1990jamie

"Awesome app. It simply works. A must have for the radioamateur or electronic nerd. Nice to have the watt law as well." 5 Stars - Per67

Also available for OS X on the Mac App Store.

Follow @ArmchairEng on Twitter to keep up to date with news and developments.

What's New in Version 2.1

- Improved support for iOS 8 & newer iPhones
- Bug fixes
- Now requires iOS 6 or above

If you like Ohmulator, please rate it on the App Store.


iPhone Screenshot 1
iPhone Screenshot 2
iPhone Screenshot 3
iPad Screenshot 1
iPad Screenshot 2
iPad Screenshot 3

Customer Reviews

Works great, easy to use.

Ohmulator does everything I need it to. I mostly use it for calculating power and current on my coil builds. Helps me ensure my mod doesn't turn into a pipe bomb!

Works excellent

Could use way more algorithms though.

Ohmulator — Ohm's Law Calculator
View in iTunes
This app is designed for both iPhone and iPad
  • $0.99
  • Category: Utilities
  • Updated:
  • Version: 2.1
  • Size: 1.7 MB
  • Language: English
  • Seller:

Compatibility: Requires iOS 6.0 or later. Compatible with iPhone, iPad, and iPod touch.

Customer Ratings

Current Version:
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