0.42 Amps to Watts

0.42 amps is 50.4 watts at 120V (DC). The wattage depends on your circuit voltage.

0.42 Amps to Watts at Every Voltage

VoltageDCAC (PF 0.85)AC 3-Phase (PF 0.85)
12V
DC, automotive, solar
5.04W 4.28W 7.42W
24V
DC, industrial control
10.08W 8.57W 14.84W
100V
Japan residential
42W 35.7W 61.83W
120V
US residential
50.4W 42.84W 74.2W
208V
US commercial three-phase
87.36W 74.26W 128.62W
220V
Legacy international / parts of Asia
92.4W 78.54W 136.04W
230V
UK / EU residential
96.6W 82.11W 142.22W
240V
US residential (dryer, range, HVAC)
100.8W 85.68W 148.4W
277V
US commercial lighting
116.34W 98.89W 171.28W
400V
UK / EU commercial three-phase
168W 142.8W 247.34W
460V
US industrial motor (NEC 430.250 column)
193.2W 164.22W 284.44W
480V
US industrial three-phase
201.6W 171.36W 296.8W
575V
Canadian industrial three-phase
241.5W 205.28W 355.55W

Other Amperages

This calculator provides estimates for reference purposes only. Always consult a licensed electrician and verify compliance with the National Electrical Code (NEC) and local electrical codes before performing any electrical work.