What is the Resistor Color Code Decoder?

The Resistor Color Code Decoder calculates the resistance value and tolerance of a resistor based on its color bands. This tool is useful for electronics students, hobbyists, and engineers to quickly identify resistor values without manual conversion, saving time and reducing errors in circuit design or repairs.

How to Use:

1. Enter Band 1 and Band 2: Type the colors of the first two bands representing the significant digits.
2. Enter Multiplier Band: Type the color of the multiplier band to scale the resistor value.
3. Enter Tolerance Band (optional): Type the color of the tolerance band; if left blank, a default of ±20% is used.
4. Click “Decode”: The calculator computes the resistance in ohms along with the tolerance.
5. Review the Result: Use the displayed value to correctly identify resistor ratings and ensure proper circuit design.