How to Read Resistor Color Codes?

Resistor color codes are a standard marking system used to indicate the resistance value, tolerance, and reliability of a resistor. The bands are read from left to right[Image of resistor color code chart] .

• Band 1 & 2: Significant digits (The numbers).
• Band 3: Multiplier (The number of zeros).
• Band 4: Tolerance (Precision, usually Gold ±5%).

Use this tool to decode standard 4-band resistors or high-precision 5-band resistors instantly.