How to convert 1 watt to amps

How to convert electric power of 1 watt (W) to electric current in amps (A).

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

Amps calculation with voltage of 12V DC

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

amp = watt / volt

amps = 1W / 12V = 0.083333A

Amps calculation with voltage of 120V AC

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 = 1W / (1 × 120V) = 0.008333A

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

amps = 1W / (0.8 × 120V) = 0.010417A

Amps calculation with voltage of 230V AC

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 = 1W / (1 × 230V) = 0.004348A

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

amps = 1W / (0.8 × 230V) = 0.005435A

 

How to convert watts to amps ►

 


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