Electrical Power Calculator
Power and resistance from voltage and current (P = V × I).
Result
Power (W)
1,150.00
Resistance (Ω)
46.00
How it works
P = V × I, R = V ÷ I
Electrical power is voltage times current. Resistance follows from Ohm’s law. A 230 V device drawing 5 A uses 1150 W.
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Frequently asked questions
How do I get watts?
Multiply the voltage by the current: a 230 V appliance at 5 A draws 1150 watts.
How is resistance found?
By Ohm’s law, R = V ÷ I — voltage divided by current.
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