Resistor Color Code Reader

Decode resistor bands to get resistance, tolerance, and range.

Band 1: -
Band 2: -
Multiplier: -
Tolerance: -

How resistor color codes are calculated

Resistor color bands map to digits, multipliers, and tolerance values.

Four-band resistors use two digits, a multiplier, and tolerance. Five-band resistors use three digits, a multiplier, and tolerance.

Choose the band colors to compute resistance and min/max values.

Resistor Color Code Reader FAQs