# Common resistor values for LEDs

## When in doubt, use a 220ohm resistor

If you are messing around with LEDâ€™s and development boards, like the Raspberry Pi or NodeMCU, then a good rule of thumb is to use a **220 ohm** resistor. The 220 ohm resistory will work with a **3.3v** or **5v** feed and cover any color in the bag of LEDs.

## Chart of LED colors, power levels, and resistors to use.

LED color | 3.3V | 3.7V | 5V | 6V | 9V | 12V |

AMBER 2.1V, 20mA |
68 Ohm 1/8 W |
82 Ohm 1/8 W |
150 Ohm 1/8 W |
220 Ohm 1/8 W |
390 Ohm 1/4 W |
560 Ohm 1/4 W |

BLUE 3.2V, 20mA |
5.6 Ohm 1/8 W |
27 Ohm 1/8 W |
100 Ohm 1/8 W |
150 Ohm 1/8 W |
330 Ohm 1/8 W |
470 Ohm 1/4 W |

GREEN 2.1V, 20mA |
68 Ohm 1/8 W |
82 Ohm 1/8 W |
150 Ohm 1/8 W |
220 Ohm 1/8 W |
390 Ohm 1/4 W |
560 Ohm 1/4 W |

ORANGE 2V, 20mA |
68 Ohm 1/8 W |
100 Ohm 1/8 W |
180 Ohm 1/8 W |
220 Ohm 1/8 W |
390 Ohm 1/4 W |
560 Ohm 1/4 W |

PINK 3.2V, 20mA |
5.6 Ohm 1/8 W |
27 Ohm 1/8 W |
100 Ohm 1/8 W |
150 Ohm 1/8 W |
330 Ohm 1/8 W |
470 Ohm 1/4 W |

PURPLE 3.2V, 20mA |
5.6 Ohm 1/8 W |
27 Ohm 1/8 W |
100 Ohm 1/8 W |
150 Ohm 1/8 W |
330 Ohm 1/8 W |
470 Ohm 1/4 W |

RED 1.8V, 20mA |
82 Ohm 1/8 W |
100 Ohm 1/8 W |
180 Ohm 1/8 W |
220 Ohm 1/8 W |
390 Ohm 1/4 W |
560 Ohm 1/4 W |

WHITE 3.2V, 20mA |
5.6 Ohm 1/8 W |
27 Ohm 1/8 W |
100 Ohm 1/8 W |
150 Ohm 1/8 W |
330 Ohm 1/8 W |
470 Ohm 1/4 W |

YELLOW 2V, 20mA |
68 Ohm 1/8 W |
100 Ohm 1/8 W |
180 Ohm 1/8 W |
220 Ohm 1/8 W |
390 Ohm 1/4 W |
560 Ohm 1/4 W |