**Ohms Law calculator** calculates any two from voltage, current, resistance or power based on the other two given variables from the Ohms law formula. You can more on this topic below the tool.

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## How does this Ohms Law calculator work?

In case you know 2 out of the 4 variables from Ohms law you can determine the other two figures by applying these formulas:

[V] = [C] * [R]

[R] = [V] / [C]

[C] = [V] / [R]

[P] = [V] * [C] = ([V]^2) / [R] = ([C]^2) * [R]

Where:

[V] = Voltage

[C] = Current

[R] = Resistance

[P] = Power

In regard of the units that can be processed by this *Ohms Law calculator*, depending on the variable in question here are the energy measurement units that are supported:

- Voltage can be either in Kilovolt, Volt or Milivolt.
- Resistance can be expressed either in Ohm, KiloOhm or MegaOhm.
- Current can be entered either in Ampere, Miliapere or Kiloampere.
- Power can be input either in Watt, Kilowatt, Megawatt or Horsepower.