# Ohm's law calculator

## Calculates power, resistance, voltage or current from two known values

Example 1: Must calculate the current of a circuit consuming 50 watts with a 12 volt supply | View example |

Example 2: Must calculate the resistance to have 100 microvolt output with 20 milliamp current | View example |

You may use one of the following SI prefix after a value: p=pico, n=nano, u=micro, m=milli, k=kilo, M=mega, G=giga

Results |

Power with 100 microvolts and 20 milliamperes | 2 microwatts |

Resistance with 100 microvolts and 20 milliamperes | 5 milliohms |