The watt is the SI unit of power.

Definition: 1 Joule/second (1J/s), the rate at which energy (measured in Joules) is converted, used or dissipated per second. In the electrical unit system, it is volts multiplied by amperes (1V·A, referred to as 1 volt-ampere).

The commonly used formulas for Watt are W=UIT; W=PT.

In our daily life, kilowatt is commonly used as a unit, 1 kilowatt = 1000 watts; 1 megawatt = 1000 kilowatts.

We sometimes pronounce "WHAT" in English as watt, which is a popular Internet term and means "what".