LED Resistor Calculator

Single LED:

Supply Voltage: VOLTS (ex: 12)
Voltage to LED: VOLTS (ex: 3.5 for blue, green, white, uv, pink or 2.3 for red, yellow, orange)
Desired LED Current: MILLIAMPS (ex: 20)
 

LED in series:

Supply Voltage: VOLTS
Voltage to LED: VOLTS
Desired LED Current: MILLIAMPS
Number of LEDs: