Amps or amperage is the measure of current or the number of electrons that flow through a circuit. Watts is the measure of power in a circuit. Wattage is calculated by multiplying voltage x current or amperage. Being that current or amperage is a component of wattage it is hard to compare the two. In a circuit, current or amperage is carried by larger electrical components and wire runs.
. Resistors and diodes regulate current flow and in turn regulate wattage or power. Current is not to be confused with voltage because voltage is merely the electromotive force in a circuit and current is the number of electrons flowing in a circuit. High wattage or high watts is also carried by larger electrical components and wire runs in a circuit. This is the formula for calculating power or wattage of a circuit (I x V= P) I represents amperage, V represents electrical voltage, and P represents power.