3.21 Amps to Watts

3.21 amps is 385.2 watts at 120V (DC). The wattage depends on your circuit voltage.

3.21 Amps to Watts at Every Voltage

VoltageDCAC (PF 0.85)AC 3-Phase (PF 0.85)
12V
DC, automotive, solar
38.52W 32.74W 56.71W
24V
DC, industrial control
77.04W 65.48W 113.42W
100V
Japan residential
321W 272.85W 472.59W
120V
US residential
385.2W 327.42W 567.11W
208V
US commercial three-phase
667.68W 567.53W 982.99W
220V
Legacy international / parts of Asia
706.2W 600.27W 1,039.7W
230V
UK / EU residential
738.3W 627.56W 1,086.96W
240V
US residential (dryer, range, HVAC)
770.4W 654.84W 1,134.22W
277V
US commercial lighting
889.17W 755.79W 1,309.07W
400V
UK / EU commercial three-phase
1,284W 1,091.4W 1,890.36W
460V
US industrial motor (NEC 430.250 column)
1,476.6W 1,255.11W 2,173.91W
480V
US industrial three-phase
1,540.8W 1,309.68W 2,268.43W
575V
Canadian industrial three-phase
1,845.75W 1,568.89W 2,717.39W

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.