Watt is a measure of power. One watt (W) is the rate at which work is done when one ampere (A) of current flows through an electrical potential difference of one volt (V) .
Amps(A) short for ampere is the base unit of electric current.
Formula to convert watts to Amps.
To convert W to A, we use the formula below.

Volts is the the SI unit of electromotive force, which is the difference in potential that would carry one ampere of current against one ohm resistance.
Example:
Suppose a bulb consumes 100 watts when it is on, calculate the current in the circuit if the voltage is 120 volts.

Therefore, the current is 0.83 amps.