31 Amps to Watts

31 amps is 3,720 watts at 120V (DC). The wattage depends on your circuit voltage.

31 Amps to Watts at Every Voltage

VoltageDCAC (PF 0.85)AC 3-Phase (PF 0.85)
12V
DC, automotive, solar
372W 316.2W 547.67W
24V
DC, industrial control
744W 632.4W 1,095.35W
100V
Japan residential
3,100W 2,635W 4,563.95W
120V
US residential
3,720W 3,162W 5,476.74W
208V
US commercial three-phase
6,448W 5,480.8W 9,493.02W
220V
Legacy international / parts of Asia
6,820W 5,797W 10,040.7W
230V
UK / EU residential
7,130W 6,060.5W 10,497.09W
240V
US residential (dryer, range, HVAC)
7,440W 6,324W 10,953.49W
277V
US commercial lighting
8,587W 7,298.95W 12,642.15W
400V
UK / EU commercial three-phase
12,400W 10,540W 18,255.82W
460V
US industrial motor (NEC 430.250 column)
14,260W 12,121W 20,994.19W
480V
US industrial three-phase
14,880W 12,648W 21,906.98W
575V
Canadian industrial three-phase
17,825W 15,151.25W 26,242.73W

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.