Resistor Code Calculator 4+

Vivid Planet Software

Designed for iPad

    • 3.8 • 21 Ratings
    • Free



Calculate resistor color codes with this handy reference app. The app is useful for the maker, engineer, student and arduino or raspberry pi tinkerer when working with electronics.

Supports 4 and 5-band resistors!

The industry standard color-code is used to identify the resistance value of resistors used in all kinds of electronics.

What’s New

Version 1.2

This app has been updated by Apple to display the Apple Watch app icon.

Minor changes

Ratings and Reviews

3.8 out of 5
21 Ratings

21 Ratings

Steve_Danger ,

What does it need Bluetooth access for?

Good little app that does exactly what you need it to - visually decoding/encoding the values and color bands of resistors. In that aspect, it’s flawless. Five+ years later, though, and I still can’t figure out why every so often it asks me to grant Bluetooth access permission 🤔

TheHammer610 ,

Great - But Needs Precision Option

Extremely helpful for standard resistors with four color bands. Would be nice to have a 5 band option.
I would pay if the app allowed the camera to ID the colors, if fast and reliable.

Lisianne ,

Wow, just perfect

Simple is as simple does, this app translates the resistor color codes to numeric form on one easy-to-use page; I love it.

Caution: you really need a reliable multimeter to verify that the resistor you have actually measures correctly, as it may have been overheated or otherwise incorrect.

App Privacy

The developer, Vivid Planet Software, has not provided details about its privacy practices and handling of data to Apple.

No Details Provided

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

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