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Electronics Tool

Resistor Color Code Calculator

Instantly decode 4-band and 5-band resistor color codes. The essential visual tool for electronics hobbyists and engineers.

Visual
Color Picker
4 & 5 Bands
Supported
Resistance Value
1 kΩ
±5%

How to Read Resistor Codes

Resistor values are marked with colored bands.

  • 4-Band Resistors: The first two bands are digits, the third is the multiplier, and the fourth is the tolerance.
  • 5-Band Resistors: The first three bands are digits (for higher precision), the fourth is the multiplier, and the fifth is the tolerance.

Color Code Reference Chart

Color Value Multiplier Tolerance
Black
0x1-
Brown
1x10±1%
Red
2x100±2%
Orange
3x1k-
Yellow
4x10k-
Green
5x100k±0.5%
Blue
6x1M±0.25%
Violet
7x10M±0.1%
Grey
8-±0.05%
White
9--
Gold
-x0.1±5%
Silver
-x0.01±10%