21.24 Amps to Watts

21.24 amps is 2,548.8 watts at 120V (DC). The wattage depends on your circuit voltage.

21.24 Amps to Watts at Every Voltage

VoltageDCAC (PF 0.85)AC 3-Phase (PF 0.85)
12V
DC, automotive, solar
254.88W 216.65W 375.25W
24V
DC, industrial control
509.76W 433.3W 750.49W
100V
Japan residential
2,124W 1,805.4W 3,127.04W
120V
US residential
2,548.8W 2,166.48W 3,752.45W
208V
US commercial three-phase
4,417.92W 3,755.23W 6,504.25W
220V
Legacy international / parts of Asia
4,672.8W 3,971.88W 6,879.5W
230V
UK / EU residential
4,885.2W 4,152.42W 7,192.2W
240V
US residential (dryer, range, HVAC)
5,097.6W 4,332.96W 7,504.91W
277V
US commercial lighting
5,883.48W 5,000.96W 8,661.91W
400V
UK / EU commercial three-phase
8,496W 7,221.6W 12,508.18W
460V
US industrial motor (NEC 430.250 column)
9,770.4W 8,304.84W 14,384.4W
480V
US industrial three-phase
10,195.2W 8,665.92W 15,009.81W
575V
Canadian industrial three-phase
12,213W 10,381.05W 17,980.51W

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.