Resistor Code Calculator 4+

Vivid Planet Software

Designed for iPad

    • 3.7 • 26 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 2.0

- Minor bug fixes and project updates

Ratings and Reviews

3.7 out of 5
26 Ratings

26 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, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Used to Track You

The following data may be used to track you across apps and websites owned by other companies:

  • Identifiers
  • Usage Data

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Identifiers
  • Usage Data

Privacy practices may vary, for example, based on the features you use or your age. Learn More

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