1,021 Amps to Watts

1,021 amps is 122,520 watts at 120V (DC). The wattage depends on your circuit voltage.

1,021 Amps to Watts at Every Voltage

VoltageDCAC (PF 0.85)AC 3-Phase (PF 0.85)
12V
DC, automotive, solar
12,252W 10,414.2W 18,037.92W
24V
DC, industrial control
24,504W 20,828.4W 36,075.85W
100V
Japan residential
102,100W 86,785W 150,316.03W
120V
US residential
122,520W 104,142W 180,379.24W
208V
US commercial three-phase
212,368W 180,512.8W 312,657.34W
220V
Legacy international / parts of Asia
224,620W 190,927W 330,695.26W
230V
UK / EU residential
234,830W 199,605.5W 345,726.87W
240V
US residential (dryer, range, HVAC)
245,040W 208,284W 360,758.47W
277V
US commercial lighting
282,817W 240,394.45W 416,375.4W
400V
UK / EU commercial three-phase
408,400W 347,140W 601,264.12W
460V
US industrial motor (NEC 430.250 column)
469,660W 399,211W 691,453.73W
480V
US industrial three-phase
490,080W 416,568W 721,516.94W
575V
Canadian industrial three-phase
587,075W 499,013.75W 864,317.17W

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.