Electrical Power Calculator

Free electrical power calculator for watts calculator. Enter the values below to get an instant result.

JavaScript is required for live calculation.

You can still read how Electrical Power Calculator works, the formula, examples, and FAQs below.

Voltage
Current
Resistance

Inputs

Voltage

Current

Resistance

Results update when you click Calculate.

power

70.0000

Calculate electrical power

(voltage) * (current) / (resistance || 1)

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Recently used

Tools you open will show up here on this device — with your last inputs when available.

What this result means

Free electrical power calculator for watts calculator. Enter the values below to get an instant result. Calculate electrical power: (voltage) * (current) / (resistance || 1).

Assumptions

Rule dependency: Formula / standards may vary.

How it works

Calculate electrical power: (voltage) * (current) / (resistance || 1).

Example

Example: “watts calculator”. Enter your values and click the button to get a result.

Frequently asked questions

What does this electrical power calculator do?+

It helps you calculate electrical power. Typical search: “watts calculator”.

How should I read the result?+

Calculate electrical power using voltage/current/resistance. Result: power.