Watt Calculator
Calculate power, voltage, or current using the Power Law.
Watt Calculator
Common Wattage Scenarios
Click on these links to see instant calculations with common values:
Understanding Power
Power is the rate at which energy is transferred or converted. In an electrical circuit, it is the rate at which electrical energy is converted into another form, such as heat, light, or motion.
Formulas
Power (P): P = V × I
Where:
• P = Power in Watts
• V = Voltage in Volts
• I = Current in Amperes
Where:
• P = Power in Watts
• V = Voltage in Volts
• I = Current in Amperes
Frequently Asked Questions
What is the difference between a watt and a volt?
A watt is a unit of power, while a volt is a unit of electric potential difference. Power is the rate at which energy is used, while voltage is the potential for energy to move.