Resistance Calculator: In Ohms
Resistor bands, Watt & Ohm Law
About
Instantly calculate resistor resistance values from color codes (3-6 bands). Includes Ohm's Law and Watt's Law calculators for voltage, current, and power. Ideal for electronics enthusiasts and professionals.
What's New in Resistance Calculator
1.8.4
June 30, 2026
- Internal app fixes and improvements
Subscription plans
Weekly Premium
Get Distraction Free Calculations for a week
In-App Purchases
$7.99
Purchase Premium Version
Enjoy Ad free version of app.
Developer apps
FAQ
How do I calculate resistance with Resistance Calculator?
You can select the color bands of 3-band, 4-band, 5-band, or 6-band resistors directly in the app. It will then instantly display the calculated resistance value in ohms, along with tolerance and multiplier information.
What electrical laws can I calculate with Resistance Calculator?
Resistance Calculator includes built-in calculators for Ohm's Law and Watt's Law. You can easily compute voltage, current, resistance, and power by inputting known values.
Does Resistance Calculator have ads?
Yes, Resistance Calculator contains advertisements. This allows the app to remain free for users while offering its utility features.
What are the premium subscription options for Resistance Calculator?
Resistance Calculator offers a Weekly Premium subscription for $0.29/P7D with a 3-day free trial, and a Monthly Premium Subscription for $0.99/P1M with a 7-day free trial.
Is Resistance Calculator suitable for beginners?
Yes, the app features a clean, intuitive interface and clear visual design, making it easy to understand and use even for beginners learning electronics fundamentals.
On which devices can I use Resistance Calculator?
Resistance Calculator is available for iPhone, iPad, and iPod. It supports both Light and Dark themes for a comfortable viewing experience on these devices.
How often is Resistance Calculator updated?
The latest version of Resistance Calculator is 1.8.3, and it was last updated on January 25, 2026. This indicates a relatively active development cycle.
What is the age rating for Resistance Calculator?
Resistance Calculator has an age rating of 4+. This means it is considered appropriate for children aged 4 and above, with no significant mature content.
