This utility helps you determine the resistance value of resistors by interpreting their colored bands. It supports 3, 4, 5, and 6 band resistors, visually displaying your selections and the calculated resistance and tolerance.





208+ iOS apps curated and reviewed
If you already know Resistor color code calc, this is the deeper bench. 208+ resistor color codes apps for iPhone, all reviewed and ranked by user rating, recency, and download trend as of June 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 | Free | 5.0★ (5) | Yes | No | May 2026 | |
| 2 | Free | 5.0★ (2) | No | No | May 2026 | |
| 3 | Free | 4.0★ (1) | No | No | May 2026 | |
| 4 | Free | — | Yes | No | May 2026 | |
| 5 | Free | 3.6★ (27) | Yes | No | Jun 2026 | |
| 6 | Free | — | Yes | No | May 2026 | |
| 7 | Free | 4.9★ (60) | No | No | Jul 2026 | |
| 8 | Free | 4.7★ (1.4K) | No | Yes | Jul 2026 |





This utility helps you determine the resistance value of resistors by interpreting their colored bands. It supports 3, 4, 5, and 6 band resistors, visually displaying your selections and the calculated resistance and tolerance.


Easily determine resistor values without a multimeter. Simply spin the color wheels to match your resistor. This tool simplifies the process of identifying resistance.

Quickly identify the value of resistors using their color bands. This utility tool simplifies electronics calculations for hobbyists and professionals alike.




Easily determine the resistance value of electronic components using their color bands. This reference tool supports both 4 and 5-band resistors, making it ideal for makers, engineers, and students working with electronics projects.




Easily determine the resistance value of electronic components. Simply select the number of color bands on your resistor and input the colors one by one to instantly get the resistance and tolerance. This tool simplifies a common electronics task.


This comprehensive toolkit offers over 160 electronic applications, calculators, and reference tools for engineers, students, and hobbyists. It features a multi-functional keyboard, color code tools, audio scope, frequency generator, and component references with datasheet access. The app supports real-time circuit simulations and includes a file manager for saving calculations.


This app provides a comprehensive suite of tools and calculators for electronics engineers, students, and hobbyists. It includes numerous calculators for resistors, LEDs, capacitors, Ohm's law, and more, alongside useful tables and unit converters.


This app provides a comprehensive suite of calculators and reference tools for electronics enthusiasts and professionals. It includes features for component identification, circuit calculations, and electrical property analysis, aiding in both study and practical work.




Quickly calculate resistor values from color bands or SMD codes, and vice versa. This tool is ideal for electronics enthusiasts, students, and DIYers working with 4, 5, or 6-band resistors and various SMD codes. It functions offline and requires no registration.


Easily calculate resistor resistance, tolerance, and temperature coefficients. Supports 4, 5, and 6 band codes with a user-friendly interface for electronics enthusiasts.


Easily scan and generate QR codes and barcodes for various purposes, including Wi-Fi access, product information, and URLs. Save and manage your codes, and even check lottery tickets. Offers both free and premium features for enhanced customization and unlimited use.




Identify the exact color of any pixel in an image. Upload photos, zoom in, and get color details in RGB, CMYK, and HEX formats, along with color names. Save your detected colors for later access.


Easily read and convert electronic component resistances. Input color codes or SMD values, and the application handles the rest. Offers a straightforward interface for quick calculations.


This app is a powerful tool for scanning and generating QR codes and barcodes. It offers extensive customization options for code design, including logos and colors. Advanced features like encryption, URL safety checks, and inventory scanning make it a versatile solution for personal and professional use.


This app helps electricians and construction workers quickly identify the color codes for electrical conductors in US single or three-phase systems. It's a straightforward tool designed for efficiency on the job.


Find color codes easily with this tool. Select colors from a list, adjust them to your preferences, and get numerical values for use in development. Streamline your workflow for web and app design.