Calculate resistor color codes with this handy reference app. The app is useful for every maker, engineer, student and arduino or raspberry pi tinkerer when working with electronics.

Supports 4 and 5-band resistors!

The industry standard resistor color code is used to identify the resistance value of resistors used in all kinds of electronics.

Calculate resistor color codes with this handy reference app. The app is useful for every maker, engineer, student and arduino or raspberry pi tinkerer when working with electronics.

Supports 4 and 5-band resistors!

The industry standard resistor color code is used to identify the resistance value of resistors used in all kinds of electronics.