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.



241+ iOS apps curated and reviewed
Resistor Calculator Lite is the household name in resistor calculator lite, but it's far from the only option. We track 241+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 | Free | — | No | No | Aug 2026 | ||
| 2 | Free | 4.9★ (60) | No | No | Sep 2026 | ||
| 3 | Free | 3.6★ (27) | Yes | No | Jun 2026 | ||
| 4 | Free | 4.6★ (36K) | Yes | Yes | Sep 2026 | ||
| 5 | Free | — | No | No | May 2026 | ||
| 6 | Free | — | No | No | Sep 2026 | ||
| 7 | Free | 5.0★ (1) | Yes | Yes | Jul 2026 | ||
| 8 | Free | 4.0★ (1) | No | No | May 2026 |







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.


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.