This calculator helps you to find the resistance value of surface mount resistors. Just fill in the code written on the resistor and the value displays underneath.

This simple and accurate calculator for your iPhone or iPad, will help you determine the value of any SMD resistor. To get started, input the 3 or 4 digit code and hit the "Calculate" button.

How to calculate the value of an SMD resistor.
-Standard 3 or 4 digit markings that can include "R" to indicate a decimal point or "M" to indicate a decimal point for milliohms (Current sensing SMDs)
Examples: 330 3R3 4703

-EIA-96 1% markings with a number in the range 01 to 96, followed by a letter
Examples: 22A 68C 02F

-2, 5, and 10% markings with a letter, followed by a numbers in the range 01 to 60
Examples: A22 C58 F59

What’s New

Version 1.9

- Fixed a few minor bugs
- Improved the app's stability

Ratings and Reviews

5.0 out of 5
1 Rating

1 Rating

Jdagr ,

Very friendly and useful app

I recommend it with no doubt!!

19kouki75 ,

Very nice app

Simple and accurate.

Vascool75 ,


Καλύπτει πλήρως αυτό που γράφει ο τίτλος. Περιλαμβάνει όλους τους τύπους αντιστάσεων SMD.

App Privacy

The developer, Vassilis Voutsas, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

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


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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