How to convert 500 watts to amps

You can calculate (but not convert) the amps from watts and volts:

For DC power supply, amps are equal to watts divided by volts.

amp = watt / volt

amps = 500W / 12V = 41.667A

For AC power supply, amps are equal to watts divided by power factor times volts.

amps = watts / (PF × volts)

For resistive load without inductors or capacitors, the power factor is equal to 1:

amps = 500W / (1 × 120V) = 4.167A

For inductive load (like induction motor), the power factor can be approximately equal to 0.8:

amps = 500W / (0.8 × 120V) = 5.208A

For AC power supply, amps are equal to watts divided by power factor times volts.

amps = watts / (PF × volts)

For resistive load without inductors or capacitors, the power factor is equal to 1:

amps = 500W / (1 × 230V) = 2.174A

For inductive load (like induction motor), the power factor can be approximately equal to 0.8:

amps = 500W / (0.8 × 230V) = 2.717A

See also