18.5 Amps to Watts

18.5 amps is 2,220 watts at 120V (DC). The wattage depends on your circuit voltage.

18.5 Amps to Watts at Every Voltage

VoltageDCAC (PF 0.85)AC 3-Phase (PF 0.85)
12V
DC, automotive, solar
222W 188.7W 326.84W
24V
DC, industrial control
444W 377.4W 653.68W
100V
Japan residential
1,850W 1,572.5W 2,723.65W
120V
US residential
2,220W 1,887W 3,268.38W
208V
US commercial three-phase
3,848W 3,270.8W 5,665.19W
220V
Legacy international / parts of Asia
4,070W 3,459.5W 5,992.03W
230V
UK / EU residential
4,255W 3,616.75W 6,264.39W
240V
US residential (dryer, range, HVAC)
4,440W 3,774W 6,536.76W
277V
US commercial lighting
5,124.5W 4,355.83W 7,544.51W
400V
UK / EU commercial three-phase
7,400W 6,290W 10,894.6W
460V
US industrial motor (NEC 430.250 column)
8,510W 7,233.5W 12,528.79W
480V
US industrial three-phase
8,880W 7,548W 13,073.52W
575V
Canadian industrial three-phase
10,637.5W 9,041.88W 15,660.99W

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.