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Resistor Color Code Calculator

By Vassilis Voutsas

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


This free, simple, accurate and useful utility application is used to decode information for color banded axial lead resistors.

-Convert Colors into Value
Select the number of bands, then their colors to determine the value and tolerance of the resistors.

-Convert Value Into Colors
Enter the resistor value, select the band type (4 bands, 5 bands), select the multiplier (Ohms, Kilohms or Megohms), the desired precision and hit 'Calculate'.

By far the easiest interface!!!

4 Band
Band 1 – First significant digit
Band 2 – Second significant digit
Band 3 – Multiplier
Band 4 – Tolerance

5 Band
Band 1 – First significant digit
Band 2 – Second significant digit
Band 3 – Third significant digit
Band 4 – Multiplier
Band 5 – Tolerance

What's New in Version 2.5

Minor bug fixes


iPhone Screenshot 1
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iPad Screenshot 1
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Resistor Color Code Calculator
View in iTunes
This app is designed for both iPhone and iPad
  • Free
  • Category: Productivity
  • Updated:
  • Version: 2.5
  • Size: 48.6 MB
  • Language: English
  • Developer:

Compatibility: Requires iOS 8.0 or later. Compatible with iPhone, iPad and iPod touch.

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