Best Resistor Identifier Apps

184+ iOS apps curated and reviewed

4.5 avg rating
17 free apps
Updated June 2026

From beginner-friendly picks to power-user tools, our resistor identifier list covers 184+ iPhone apps updated through June 2026. Compare ratings, prices, and screenshots in one place.

Top Picks for Resistor Identifier

ID Resistors#1

ID Resistors by Marc Rummel

Identify resistor values.
Editor's Choice
📚 Education
4.9(27 ratings)
Free
ID Resistors screenshot 1
ID Resistors screenshot 2
ID Resistors screenshot 3

Easily identify the values of through-hole and SMD resistors. Input a resistor value to find its code, or enter the code to determine its value. Supports English, French, German, and Spanish.

Resistance Color Calculator#3

Resistance Color Calculator by Fabian Schiller

Worth Considering
🔧 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

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.

More Resistor Identifier apps to explore

4
AI Resistor Color Code Scanner
AI Resistor Color Code Scanner
AI Resistor Color Code Scanner
Ohms calculator by camera
Free
🔧 Utilities
(1)
5
Electronics Toolkit!
Electronics Toolkit!
Electronics Toolkit!
Dozens of tools in one app
Free

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.

Resistor color code calculatorsLED resistor calculatorOhm's law calculator
📚 Education
(507)
free with in-app purchases
6
Resistor Code Calculator
Resistor Code Calculator
Resistor Code Calculator
by Vivid Planet Software
Free

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.

Calculate resistor color codesSupports 4-band resistorsSupports 5-band resistors
🔍 Reference
(27)
ad-supported
7
Resistor color code calc
Resistor color code calc
Resistor color code calc
Resistor color code Calculator
Free

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.

Calculates resistance for 3-6 band resistorsVisual band color selectionDisplays resistance and tolerance
🔧 Utilities
(5)
ad-supported
8
Resistor Calculator 4-Band
Resistor Calculator 4-Band
Resistor Calculator 4-Band
by Max Kievits
Free
🔧 Utilities
(0)
9
Resistance Calculator: In Ohms
Resistance Calculator: In Ohms
Resistance Calculator: In Ohms
Resistor bands, Watt & Ohm Law
Free

Instantly calculate resistor resistance values from color codes (3-6 bands). Includes Ohm's Law and Watt's Law calculators for voltage, current, and power. Ideal for electronics enthusiasts and professionals.

Decode resistor color codesSupports 3-6 band resistorsOhm's Law calculator
🔧 Utilities
(10)
free with in-app purchases
10
LED Resistor Calculator Plus
LED Resistor Calculator Plus
LED Resistor Calculator Plus
Resistor Values for LED
$2.99

Calculate the correct series resistor needed to safely power light-emitting diodes. Input supply voltage, LED voltage drop, current, and the number of LEDs to find the required resistor value and wattage.

Calculate series resistor valueDetermine resistor power dissipationRecommend resistor wattage
🔧 Utilities
(6)
paid
11
SJ Resistor Calculator
SJ Resistor Calculator
SJ Resistor Calculator
Resistor calculations
Free

This tool simplifies resistor calculations for electronics enthusiasts, students, and professionals. It accurately decodes resistor color codes and performs series/parallel calculations for complex circuit analysis. Avoid manual errors and streamline your electronics projects.

Resistor color code decoding (4, 5, 6 band)Series resistor calculationsParallel resistor calculations
🔧 Utilities
(1)
free with in-app purchases
12
Resistor-Converter
Resistor-Converter
Resistor-Converter
Color Resistor, SMD Resistor
Free

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.

Calculate resistor values from color bandsConvert resistor values to color bandsSupports 4, 5, and 6-band resistors
🔧 Utilities
(16)
free
13
resistor code calculator+
resistor code calculator+
resistor code calculator+
by 佳 黄
Free
🔧 Utilities
(0)
14
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
🔧 Utilities
(0)
15
Resistor Color Band Calculator
Resistor Color Band Calculator
Resistor Color Band Calculator
Resistance + Tolerance + Temp
Free

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

Calculate resistance, tolerance, and temperature coefficientsSupports 4, 5, and 6 band resistor codesIntuitive color band selection interface
🔧 Utilities
(22)
free
16
Resistor Color Band Calc
Resistor Color Band Calc
Resistor Color Band Calc
Resistor Color Band Calculator
Free
🔧 Utilities
(0)
17
HTR Resistor Finder
HTR Resistor Finder
HTR Resistor Finder
by Ravishankar Rajagopalan
Free
💼 Business
(0)
18
Resistor Plus
Resistor Plus
Resistor Plus
Resistor Calculator
$2.99

Easily calculate resistor values and tolerance using color codes. Simply select the colors for each band, and the app instantly displays the resistance in ohms. Save your results with screenshots for future reference.

Resistor color code calculationTolerance calculationInstant results display
📚 Education
(0)
paid
19
DigiKey
DigiKey
DigiKey
Components and parts
Free

Access a vast inventory of electronic components on the go. Find, order, and track parts with features like visual search, barcode scanning, and offline datasheet access. Registered users get enhanced order management and shipping notifications.

Visual Search for parts by photoBrowse and filter product inventoryView detailed product specs, datasheets, photos, and videos
💼 Business
(3.3K)
free with in-app purchases
20
Resistor Color Codes
Resistor Color Codes
Resistor Color Codes
Reading resistors made easy!
Free

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

Intuitive color wheel interfaceAccurate resistance value calculationNo multimeter required
🔧 Utilities
(2)
free