Resistor Plus 4+

Resistor Calculator


Designed for iPad

    • 1.0 • 1 Rating
    • $1.99



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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What’s New

Version 1.8

- Update for Newest Devices
- Bug Fixed

Ratings and Reviews

1.0 out of 5
1 Rating

1 Rating

csbtr3 ,


Paid money for an app that doesn’t even run. I have an iPhone X. I will be looking into getting my money back

danadanadna ,

Does not work

Loads to a black screen and nothing there...
Can't get support...
Had to buy a competitors app because I needed something that would work right away...
Very disappointed😰

Azaz123cc ,

Does not work

Beware..!! This app does not work. Just shows a blank screen.

App Privacy

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.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

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