Resistor Color Code Calculator

In-app purchases
4.8
333 reviews
50K+
Downloads
Content rating
Everyone
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About this app

Quickly and accurately calculate resistor values with our intuitive app, perfect for electronics hobbyists, students, and professionals. Whether you're deciphering color bands or directly inputting resistance values, this resistor calculator is designed to simplify your tasks with an easy-to-use interface.

We Support All Major Resistor Types and Calculations:
• Three Band Resistor (2 digits, multiplier)
• Four Band Resistor (2 digits, multiplier, tolerance)
• Five Band Resistor (3 digits, multiplier, tolerance)
• Six Band Resistor (3 digits, multiplier, tolerance, temperature coefficient (PPM))
• SMD Resistor: (3-Digit EIA, 4-Digit EIA, EIA-96)
• Series Resistor Calculator
• Parallel Resistor Calculator

Key Features:
• Color-to-Value Calculator - Quickly calculate resistance values by selecting resistor color bands. Perfect for resistor color-code lookups in electronics projects.
• Value-to-Color Calculator - Enter a resistance value, tolerance, and temperature coefficient (if applicable) to view the matching color code bands in real-time.
• SMD Resistor Code Calculator - Easily convert SMD (Surface-Mount Device) codes to standard Ohm values. Supports 3-digit EIA, 4-digit EIA, and EIA-96 coding standards.
• Series Resistance Calculator - Quickly determine the total resistance for resistors connected in series.
• Parallel Resistance Calculator - Accurately calculate the equivalent resistance of multiple resistors in parallel.

Additional Functionalities:
• Preferred Values Validation - Ensures inputted values adhere to standard resistor values, helping you avoid errors and select commonly used resistances for your projects.
• Share Your Resistor Values - Share calculated resistor details by text or image for easy project collaboration.
• Built-in Information Pages - Access in-app guides on resistor color coding and SMD resistor codes. Perfect for quick reference or learning.
• Customize App Appearance - Switch between light and dark themes to personalize your experience.

Why Choose Our App?
• Accurate & Reliable - Based on the IEC 60062 and IEC 60063 standards, ensuring industry-standard results.
• Fully Responsive - Optimized for all mobile devices, ensuring a smooth experience on any screen.

Your Feedback Matters:
Have suggestions or encountered a bug? Reach out anytime at:
brandoncano.development@gmail.com

Tags:
Resistor color code calculator
Resistor calculator
Resistance calculator
Resistor color to value calculator
Resistor value to color calculator
Resistor Standard values (E-series)
SMD (surface mount device) resistor calculator
Series resistance calculator
Parallel resistance calculator
Updated on
Jul 30, 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
No data collected
Learn more about how developers declare collection

Ratings and reviews

4.8
330 reviews
Dwight Sauter
March 28, 2023
I've only used this app one time, and I am already in love with it. I used it to go through a bunch of old resistors, helping me to organize them in labelled folders to keep them organized. This app made the job so much easier and fast. It's UI so intuitive and so simple to use. 5-stars all day long.
16 people found this review helpful
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Mark Perry
March 7, 2025
The fact this app is not only free, but has no ads is pretty rare! It does have a donate option which I happily donated to, considering how useful the app is. Very handy for people trying to quickly find the values of a resistor, either SMD or TCB, it has the option for both. 🙌🏼 It'll also tell you what colour resistor you need based on the values you give it. Nice! So if you need a 56 ohm resistor with a 5% tolerance, it'll show you what colour it'll be.
5 people found this review helpful
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Brandon Cano
March 7, 2025
Thank you so much for your kind words and support! I'm really glad to hear that you find the app useful! And a huge thank you for your donation! Your support means a lot and helps to keep improving the app. If you ever have any suggestions or features you’d like to see, feel free to share.
Biplob Chy
July 17, 2025
to good very helpfulness app learning apps for electronics ❤️‍🔥❤️‍🔥❤️‍🔥🫶😘
1 person found this review helpful
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What’s new

- General improvements
- Bug fixes