Electrical Power Calculator (P = V × I)
Calculate electrical power from voltage and current (P = V × I). Free online watts calculator with current and resistance.
Electrical Power Calculator (P = V × I)
Voltage UV
Current IA
Power draw
24W
Voltage
12V
Current
2A
Power draw
24W
Resistance
6Ω
More about: Electrical Power Calculator (P = V × I)
What it calculates
The “Electrical Power Calculator (P = V × I)” calculator computes Power draw in W from 2 parameters: voltage u (V), current i (A).
A standard physics formula used in educational and engineering tasks.
Example calculation
With parameters Voltage U = 12 V, Current I = 2 A the result is 24 W (P = U · I).
How to use
- Enter voltage u and current i — each field above is adjustable with a slider.
- Power draw (W) is calculated automatically as you type.
- Check the worked example below to see the formula applied to real numbers.
- Copy the result or bookmark this calculator.
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FAQ
How is Electrical Power Calculator (P = V × I) calculated?
The Electrical Power Calculator (P = V × I) calculator computes Power draw (in W) from voltage u, current i. Enter your values above and the exact formula is applied instantly; a worked example with real numbers is shown below.
Is the Electrical Power Calculator (P = V × I) calculator free?
Yes. It is completely free, needs no signup, runs entirely in your browser, and sends no data to any server.
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