Resistor Plus
Resistor Calculator
2,99 € · Designed for iPad. Not verified for macOS.
Resistor Calculator is the essential tool for electronics engineers, hobbyists, makers, and students. Instantly decode resistor color bands, calculate circuit values, and look up standard resistor values — all in one app.
RESISTOR COLOR CODE CALCULATOR
• Support for 4-band, 5-band, and 6-band resistors
• Tap color bands on a realistic resistor graphic to read values instantly
• View resistance, tolerance, min/max range, and temperature coefficient
• Intuitive color picker with all standard EIA color codes
REVERSE LOOKUP
• Enter a resistance value and get the matching color band combination
• Find the closest standard value from E-series tables
• Perfect for designing circuits and selecting components
SERIES & PARALLEL CALCULATOR
• Calculate total resistance for resistors in series or parallel
• Add unlimited resistors with engineering notation input (e.g. 4.7k, 2.2M)
• See live results with formula reference
VOLTAGE DIVIDER
• Solve for output voltage (Vout) or unknown resistor (R2)
• Interactive circuit diagram updates in real time
• Supports engineering notation for quick input
E-SERIES REFERENCE LIBRARY
• Browse standard resistor values from E12, E24, E48, E96, and E192 series
• Search and filter values instantly
• Tap to copy any value to clipboard
DESIGNED FOR ENGINEERS
• Clean, distraction-free interface
• Works on iPhone and iPad
• No ads, no subscriptions, no internet required
• Haptic feedback for a responsive experience
Whether you are building your first LED circuit or designing professional PCBs, Resistor Calculator Pro gives you fast, accurate answers right on your device. Download now and keep the most useful resistor tool in your pocket.
Resistor Parameters:
Band Digit
Black - 0
Brown - 1
Red - 2
Orange - 3
Yellow - 4
Green - 5
Blue - 6
Violet - 7
Grey - 8
White - 9
Band Multiplier
Black × 1 Ω
Brown × 10 Ω
Red × 100 Ω
Orange × 1 kΩ
Yellow × 10 kΩ
Green × 100 kΩ
Blue × 1 MΩ
Violet × 10 MΩ
Gold × 0.1 Ω
Silver × 0.01 Ω
Band Tolerance
Brown - 1%
Red - 2%
Gold - 5%
Silver - 10%
A resistor is a passive two-terminal electrical component that implements electrical resistance as a circuit element. In electronic circuits, resistors are used to reduce current flow, adjust signal levels, divide voltages, bias active elements, and terminate transmission lines, among other uses. A resistor opposes the flow of electrical current; the higher the value of the resistor, the more it opposes the current flow. Values are given in ohms.
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Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
- Optimized for the latest devices.
- Fixed minor bugs.
- Improved and redesigned the UI.
The developer, Nitrio, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Size
- 1.5 MB
- Category
- Education
- Compatibility
Requires iOS 16.6 or later.
- iPhone
Requires iOS 16.6 or later. - iPad
Requires iPadOS 16.6 or later. - Mac
Requires macOS 13.5 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Provider
Tan Chia Ling
- Tan Chia Ling has identified itself as a trader for this app and confirmed that this product or service complies with European Union law.
- Address
2A, Lrg Bkt Juru 14
Taman Bkt Juru
14100 Simpang Ampat Pulau Pinang
Malaysia - Phone Number
+60 125722772 - Email
nitrio.v@gmail.com
- Copyright
- © Tan Chia Ling
