120 Amps to Watts

120 amps is 14,400 watts at 120V (DC). The wattage depends on your circuit voltage.

120 Amps to Watts at Every Voltage

VoltageDCAC (PF 0.85)AC 3-Phase (PF 0.85)
12V
DC, automotive, solar
1,440W 1,224W 2,120.03W
24V
DC, industrial control
2,880W 2,448W 4,240.06W
100V
Japan residential
12,000W 10,200W 17,666.92W
120V
US residential
14,400W 12,240W 21,200.3W
208V
US commercial three-phase
24,960W 21,216W 36,747.19W
220V
Legacy international / parts of Asia
26,400W 22,440W 38,867.22W
230V
UK / EU residential
27,600W 23,460W 40,633.91W
240V
US residential (dryer, range, HVAC)
28,800W 24,480W 42,400.6W
277V
US commercial lighting
33,240W 28,254W 48,937.36W
400V
UK / EU commercial three-phase
48,000W 40,800W 70,667.67W
460V
US industrial motor (NEC 430.250 column)
55,200W 46,920W 81,267.82W
480V
US industrial three-phase
57,600W 48,960W 84,801.21W
575V
Canadian industrial three-phase
69,000W 58,650W 101,584.78W

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.