21.02 Amps to Watts

21.02 amps is 2,522.4 watts at 120V (DC). The wattage depends on your circuit voltage.

21.02 Amps to Watts at Every Voltage

VoltageDCAC (PF 0.85)AC 3-Phase (PF 0.85)
12V
DC, automotive, solar
252.24W 214.4W 371.36W
24V
DC, industrial control
504.48W 428.81W 742.72W
100V
Japan residential
2,102W 1,786.7W 3,094.66W
120V
US residential
2,522.4W 2,144.04W 3,713.59W
208V
US commercial three-phase
4,372.16W 3,716.34W 6,436.88W
220V
Legacy international / parts of Asia
4,624.4W 3,930.74W 6,808.24W
230V
UK / EU residential
4,834.6W 4,109.41W 7,117.71W
240V
US residential (dryer, range, HVAC)
5,044.8W 4,288.08W 7,427.17W
277V
US commercial lighting
5,822.54W 4,949.16W 8,572.19W
400V
UK / EU commercial three-phase
8,408W 7,146.8W 12,378.62W
460V
US industrial motor (NEC 430.250 column)
9,669.2W 8,218.82W 14,235.41W
480V
US industrial three-phase
10,089.6W 8,576.16W 14,854.34W
575V
Canadian industrial three-phase
12,086.5W 10,273.53W 17,794.27W

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.