Best Resistor Code Calculators Apps

197+ iOS apps curated and reviewed

4.6 avg rating
17 free apps
Updated June 2026

Out of 197+ resistor code calculators apps on iOS, 17 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.

Top Picks for Resistor Code Calculators

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.

Resistance Calculator: In Ohms#3

Resistance Calculator: In Ohms by TrothMatrix OPC Private Limited

Resistor bands, Watt & Ohm Law
Worth Considering
đź”§ Utilities
4.6(10 ratings)
FreeAdsIn-App Purchases
Resistance Calculator: In Ohms screenshot 1
Resistance Calculator: In Ohms screenshot 2
Resistance Calculator: In Ohms screenshot 3
Resistance Calculator: In Ohms screenshot 4
Resistance Calculator: In Ohms screenshot 5
Resistance Calculator: In Ohms screenshot 6

This electronics utility app helps users quickly calculate resistance using standard resistor color codes and includes a built-in Ohm's Law and Watt's Law calculator for voltage, current, resistance, and power calculations. Download the app to simplify resistor identification and circuit calculations, saving time and reducing errors.

More Resistor Code Calculators apps to explore

4
resistor code calculator+
resistor code calculator+
resistor code calculator+
by 佳 黄
Free
đź”§ Utilities
(0)
5
Resistor color code calc
Resistor color code calc
Resistor color code calc
Resistor color code Calculator
Free

This application helps determine the resistance value of resistors based on their colored bands, supporting 3, 4, 5, and 6 band resistors. Simply select the number of bands and click on the color chart to get the corresponding resistance value and tolerance, making it easy to configure your electronics.

đź”§ Utilities
(5)
6
Resistor Color Code Calc Lite
Resistor Color Code Calc Lite
Resistor Color Code Calc Lite
Resistor Color Code Calculator
$2.99
$6.99 | 57% OFF
đź”§ Utilities
(0)
7
SJ Resistor Calculator
SJ Resistor Calculator
SJ Resistor Calculator
Resistor calculations
Free
đź”§ Utilities
(1)
8
Resistor-Converter
Resistor-Converter
Resistor-Converter
Color Resistor, SMD Resistor
Free

This application allows users to easily convert resistor colors to resistance values and vice versa, supporting 4, 5, or 6 ring resistors, as well as SMD resistors. Simply select or enter the relevant information to get the calculated resistance value, try it now!

đź”§ Utilities
(16)
9
Electronics Circuit Calculator
Electronics Circuit Calculator
Electronics Circuit Calculator
Arduino Experiments Guide
Free
$2.99 | 100% OFF

This app provides a comprehensive set of tools for electronics circuit calculations, conversions, and experiments, making it a handy resource for engineers, students, and hobbyists. With over 55 calculations and conversions, it simplifies circuit design and analysis, allowing users to instantly calculate variable values and track their work.

📚 Education
(62)
10
Electronics Engineer Helper
Electronics Engineer Helper
Electronics Engineer Helper
Calculators and references
Free

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!

📊 Productivity
(427)
11
Electronics Toolkit!
Electronics Toolkit!
Electronics Toolkit!
Dozens of tools in one app
Free

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.

📚 Education
(507)
12
Ugly's Electrical References
Ugly's Electrical References
Ugly's Electrical References
by Informed Publishing
$12.99

This app is a comprehensive electrical reference guide that has been updated to align with the 2020 National Electrical Code. It offers a range of features such as calculators, interactive tools, and in-depth information for electricians, making it a valuable on-the-job resource.

📊 Productivity
(1.4K)
13
Calculator₊
Calculator₊
Calculator₊
Basic, Scientific, Plus Calc
Free

Try Calculator₊, the ultimate mathematics tool offering basic, scientific, and plus calculations. Ideal for homework, exams, and managing expenses, this app is like having a personal math tutor on your phone. Download now for easy and intuitive math solutions!

đź”§ Utilities
(1.7M)
14
Resistor Plus
Resistor Plus
Resistor Plus
Resistor Calculator
$2.99

This resistor calculator app helps determine resistor values in ohms and their tolerance based on color-coded bands, making it easy to select and calculate resistor colors. Simply tap and select color values, and the result is displayed immediately, allowing you to copy or take a screenshot for future reference.

📚 Education
(0)
15
Construction Master Pro Calc
Construction Master Pro Calc
Construction Master Pro Calc
Feet Inch Fraction Calculator
Free

An essential tool for professionals working with dimensions, this app optimizes speed and accuracy while reducing errors. Try it for free before purchase on your App Store account. Ideal for enhancing productivity on the go.

đź”§ Utilities
(38K)
16
Southwire® Conduit Fill Calc
Southwire® Conduit Fill Calc
Southwire® Conduit Fill Calc
by Southwire Company
Free

This application helps electricians, engineers, and contractors quickly determine the proper conduit size to use based on NEC guidelines, including fill percentages and jam probability. Simply input conduit type, size, and conductors, and the app will calculate the conduit fill percentage for you.

đź”§ Utilities
(679)
17
Sci:Pro Calculator
Sci:Pro Calculator
Sci:Pro Calculator
by Jerry Montgomery
Free

A versatile calculator app with Basic, Scientific, and Programmer modes for iPhone, iPad, and iPod Touch. Easily view history and share results via email or copy. Get precise calculations on-the-go!

đź”§ Utilities
(3.6K)
18
Resistor Color Band Calculator
Resistor Color Band Calculator
Resistor Color Band Calculator
Resistance + Tolerance + Temp
Free

This tool helps engineers, hobbyists, and students calculate the precise resistance, tolerance, and temperature coefficients of resistors by selecting color bands from an intuitive interface. With its comprehensive color band chart and user-friendly design, it streamlines resistance calculations, making it an essential asset for anyone working with resistors.

đź”§ Utilities
(22)
19
Resistor Calculator 4-Band
Resistor Calculator 4-Band
Resistor Calculator 4-Band
by Max Kievits
Free
đź”§ Utilities
(0)
20
QR Code Scanner · Barcode
QR Code Scanner · Barcode
QR Code Scanner · Barcode
QR Reader & Barcode Generator
Free

A convenient app that generates and scans QR codes for easy sharing of information. Simplify your tasks with this handy tool – download it now!

đź”§ Utilities
(3.9K)