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Resistor Plus app for iPhone and iPad


4.8 ( 8608 ratings )
Utilities Education
Developer: Nitrio
2.99 USD
Current version: 1.8, last update: 1 year ago
First release : 13 Feb 2012
App size: 8.61 Mb

Resistor Color Code Calculator to calculate Resistor Values Ohm and Tolerance based on its Color Coded Bands.

Tap and Select Resistor Color Values from Color Codes from Black, Brown, Red, Orange, Yellow, Green, Blue, Violet, Gray to White.

Quick Guide:
- Select resister band
- Tap resister band and select color value
- The result is shown immediately after color value is set
- The result is copy-able
- Screenshot the resister for reference

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, to divide voltages, bias active elements, and terminate transmission lines, among other uses. A resistor opposes the flow of electrical current. The bigger the value of a resistor the more it opposes the current flow. Values are given in Ohms

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