Online Resistor Color Code Calculator

Calculate Resistor Values from Color Codes (using four color rings).
The first and second rings mean the first and second digits, third ring is the decimal multiplier, the fourth ring indicates tolerance.

First Band Second Band Third Band Fourth Band
Black 0 Black 0 Black 1
Brown 1 Brown 1 Brown 10 Brown 1%
Red 2 Red 2 Red 100 Red 2%
Orange 3 Orange 3 Orange 1 Kilohm No Color 20%
Yellow 4 Yellow 4 Yellow 10 Kilohms
Green 5 Green 5 Green 100 Kilohms Green 0.5%
Blue 6 Blue 6 Blue 1 Megohm Blue 0.25%
Violet 7 Violet 7 Violet 10 Megohms Violet 0.1%
Gray 8 Gray 8 Gray 100 Megohms Gray 0.05%
White 9 White 9 White 1 Gigaohm
Gold 0,1 Gold 5%
Silver 0,01 Silver 10%

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