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Pick Resistors for Arduino & LEDs

Identify the resistor you need for LED current limiting and pull-ups.

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1 kΞ©
Β±5% tolerance
Range: 950 Ξ© – 1.05 kΞ©

Digit 1

Digit 2

Multiplier

Tolerance

πŸ’‘ Read bands from the end with the tolerance band (often gold or silver) on the right. 4-band resistors use two significant digits; 5- and 6-band use three for tighter precision.

Arduino tips

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A typical LED current-limiting resistor is 220Ξ©-330Ξ© (red-red-brown or orange-orange-brown).

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Pull-up/pull-down resistors for buttons are usually 10kΞ© (brown-black-orange).

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Found a loose resistor in your kit? Match its bands here to know exactly what it is before soldering.

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Learn the Resistor Color Code

Practice reading bands and check your answers whil

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Back to Resistor Color Code Calculator