# 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 450 millivolts and 700 microamperes | 315 microwatts |

Resistance with 450 millivolts and 700 microamperes | ~642.857143 ohms |

Current with 450 millivolts and 1.626875 ohms | ~276.603919 milliamperes |

Power with 450 millivolts and 1.626875 ohms | ~124.471763 milliwatts |

Voltage with 700 microamperes and 1.626875 ohms | ~1.138813 millivolts |

Power with 700 microamperes and 1.626875 ohms | ~797.16875 nanowatts |