A watt is a unit of measurement for power, which is the rate at which energy is used or produced. It measures how much energy is used or produced per unit of time. For example, if you turn on a 100-watt light bulb, it will use 100 watts of power per second. The higher the wattage, the more power is being used or produced.
 

Watts can be calculated by multiplying the voltage (Volts) by the current (Amps) in a circuit. The formula for calculating watts is:
 

Watts = Volts x Amps
 

For example, if you have a device that operates at 120 volts and draws 1 amp of current, the power consumption would be:
 

120 Volts x 1 Amps = 120 Watts
 

So the device would consume 120 watts of power.