Power Calculator
Calculate electrical power by entering voltage and current values.
Power
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About Power Calculator
CalHub’s Power Calculator allows you to quickly determine the electrical power consumed by a device using its voltage and current ratings. This is useful for household, industrial, and electronic applications.
How to Use?
- Enter the voltage in volts.
- Enter the current in amperes.
- Click "Calculate Power" to see the result in watts.
Frequently Asked Questions
Yes, the Power Calculator is completely free to use.
It uses P = V × I, where P is power in watts, V is voltage in volts, and I is current in amperes.
For DC circuits, it works directly. For AC, multiply by power factor if needed.
No registration is required. You can use it instantly.
Yes, enter the voltage and current ratings of appliances to calculate their power consumption.