LED Resistance Calculator
LED Resistance Calculator
Use this calculator to calculate the size of resistor needed in an LED circuit. You can also use it to find the other values including input voltage, forward voltage, and current.
| Solve For: | ||
| Forward Voltage | ||
| Input Voltage | ||
| Current | ||
| Result | Ready! | |
R = \frac{V_{in} – V_f}{I}