1.21 Amps to Watts

1.21 amps is 145.2 watts at 120V (DC). The wattage depends on your circuit voltage.

1.21 Amps to Watts at Every Voltage

VoltageDCAC (PF 0.85)AC 3-Phase (PF 0.85)
12V
DC, automotive, solar
14.52W 12.34W 21.38W
24V
DC, industrial control
29.04W 24.68W 42.75W
100V
Japan residential
121W 102.85W 178.14W
120V
US residential
145.2W 123.42W 213.77W
208V
US commercial three-phase
251.68W 213.93W 370.53W
220V
Legacy international / parts of Asia
266.2W 226.27W 391.91W
230V
UK / EU residential
278.3W 236.56W 409.73W
240V
US residential (dryer, range, HVAC)
290.4W 246.84W 427.54W
277V
US commercial lighting
335.17W 284.89W 493.45W
400V
UK / EU commercial three-phase
484W 411.4W 712.57W
460V
US industrial motor (NEC 430.250 column)
556.6W 473.11W 819.45W
480V
US industrial three-phase
580.8W 493.68W 855.08W
575V
Canadian industrial three-phase
695.75W 591.39W 1,024.31W

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.