4 Band Graphical Resistor Calculator

This calculator is valid only for four band resistors. For 5 bands resistors calculator click here. For 6 band resistors calculator click here.

Simply click on resistor to select/change the values from the drop-down menus for each band.

ABrownRedOrangeYellowGreenBlueVioletGrayWhite

BBlackBrownRedOrangeYellowGreenBlueVioletGrayWhite

CBlackBrownRedOrangeYellowGreenBlueGoldSilver

TolBrownRedGoldSilver

NoneBlackBrownRedOrangeYellowGreenBlueVioletGrayWhite NoneBrownRedOrangeYellowBlueViolet
Resistor Value

Color-coding equivalents for the four, five and six bands resistors.

To distinguish left from right there is a gap between the third and the fourth bands.

(A Zero Ohm resistor is usually marked with a single black band)

• band A is the first significant figure of component value (left side)
• band B is the second significant figure (some precision resistors have a third significant figure, and thus five bands).
• band C is the decimal multiplier
• band D if present, indicates tolerance of value in percent (no band means 20%)