Physics

Watt Calculator

Find electrical power from voltage and current.

Calculated Output

Power (W) 24

Formula: P = V × I

Step-by-Step Breakdown

1. Values used:

2. Voltage = 12 V

3. Current = 2 A

5. Power = Voltage x Current = 12 x 2 = 24W

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The math behind it

P = V·I. Combined with Ohm's law, P = I²R = V²/R.

12 V × 2 A → 24 W.

What is a watt?

One joule of energy per second.