Arduino Projects: Resistor Color Codes for Electronics

Part of the Arduino Projects For Dummies Cheat Sheet

When building Arduino electronics projects, you often need to consult a schematic or identify a resistor. Use this table to identify a resistor's value, in Ohms, from its color code:

Color 1st Digit 2nd Digit 3rd Digit Multiplier Tolerance
Black 0 0 0 1
Brown 1 1 1 10 1%
Red 2 2 2 100 2%
Orange 3 3 3 1000
Yellow 4 4 4 10,000
Green 5 5 5 100,000
Blue 6 6 6 1,000,000
Violet 7 7 7
Grey 8 8 8
White 9 9 9
Gold 0.1 5%
Silver 0.01 10%

Example: A 4,700Ω (4.7K Ω) resistor with yellow, violet, orange, and gold stripes:

Color Yellow Violet Orange Gold
Value 4 7 X 1000 ±5%
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