Best Resistor Code Calculator Apps

210+ iOS apps curated and reviewed

4.4 avg rating
20 free apps
Updated June 2026

Looking for free resistor code calculator apps? 20 of our 210+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.

Top Picks for Resistor Code Calculator

Resistance Color Calculator#1

Resistance Color Calculator by Fabian Schiller

Editor's Choice
🔧 Utilities
4.9(60 ratings)
Free
Resistance Color Calculator screenshot 1
Resistance Color Calculator screenshot 2
Resistance Color Calculator screenshot 3
Resistance Color Calculator screenshot 4

The Resistance Color Calculator is a user-friendly tool that simplifies the process of determining the resistance value of a resistor. Users can easily select the number of rings on their resistor and input the color codes, and the application will instantly provide the resistance value, tolerance, and other relevant details. This app is designed to make the task of identifying resistor values quick and effortless.

Resistor Code Calculator#2

Resistor Code Calculator by Vivid Planet Software

Strong Contender
🔍 Reference
3.6(27 ratings)
FreeAds
Resistor Code Calculator screenshot 1
Resistor Code Calculator screenshot 2

This handy reference app calculates resistor color codes, supporting 4 and 5-band resistors, and is useful for makers, engineers, students, and electronics enthusiasts. Download the app to easily identify resistance values using the industry standard color-code.

Electronics Toolkit!#3

Electronics Toolkit! by Davey Hollenberg

Dozens of tools in one app
Worth Considering
📚 Education
4.3😐(507 ratings)
FreeAdsIn-App Purchases
Electronics Toolkit! screenshot 1
Electronics Toolkit! screenshot 2
Electronics Toolkit! screenshot 3
Electronics Toolkit! screenshot 4
Electronics Toolkit! screenshot 5

Discover an all-in-one Electronics Toolkit with a variety of calculators, converters, and reference tables tailored for electronic engineers, students, and hobbyists. Access essential tools like resistor color code calculators, logic gate truth tables, 555 timer calculators, and more to assist in electronic projects and learning.

What We Love

  • 📚 Comprehensive electronics reference material
  • 👍 Useful for beginners and students
  • 🎯 Good basic calculators for resistance and capacitance
  • 📌 Helpful pinout diagrams for Arduino and Raspberry Pi

Room to Improve

  • 🎨 Poor color scheme with readability issues
  • ⚪ White text on white background
  • 🔒 Excessive paywall blocking most features

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This application helps identify resistor values, supporting both through-hole and SMD resistors, by allowing users to enter a value and get the resistor code or vice versa. Try it now to easily convert between resistor values and codes in English, French, German, or Spanish.

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A must-have app for electronics enthusiasts with calculators and references covering a wide range of topics including Ohm's law, capacitor codes, resistor color marking, and much more. Join over 100,000 users in simplifying electronics work or studies today. Unlock even more tools with the PRO version for enhanced functionality. Check it out now!

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An interactive circuit simulation app that lets users build and play with electronic circuits, providing real-time insight into circuit operation. Features automatic wire routing, thousands of components, and a mobile simulation engine for students and enthusiasts. Download for free with an option for a full version upgrade for $14.99.

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