## Watts to amps calculator

Electric power in watts (W) to electric current in amps (A) calculator.

Select current type, enter power in watts, voltage in volts, power factor for AC circuit and press the

Calculatebutton (DC = Direct Current, AC = Alternating Current):## DC watts to amps calculation

The current

Iin amps (A) is equal to the powerPin watts (W), divided by the voltageVin volts (V):

I_{(A)}=P_{(W)}/V_{(V)}## AC single phase watts to amps calculation

The phase current

Iin amps (A) is equal to the powerPin watts (W), divided by the power factorPFtimes the RMS voltageVin volts (V):

I_{(A)}=P_{(W)}/ (PF×V_{(V)})The power factor of resistive impedance load is equal to 1.

## AC three phase watts to amps calculation

## Calculation with line to line voltage

The phase current

Iin amps (A) is equal to the powerPin watts (W), divided by square root of 3 times the power factorFPtimes the line to line RMS voltageV_{L-L}in volts (V):

I_{(A)}=P_{(W)}/ (√3 ×PF×V_{L-L(V)})The power factor of resistive impedance load is equal to 1.

## Calculation with line to neutral voltage

The phase current

Iin amps (A) is equal to the powerPin watts (W), divided by 3 times the power factorFPtimes the line to neutral RMS voltageV_{L-N}in volts (V):

I_{(A)}=P_{(W)}/ (3 ×PF×V_{L-N(V)})The power factor of resistive impedance load is equal to 1.

## See also