21.01 Amps to Watts

21.01 amps is 2,521.2 watts at 120V (DC). The wattage depends on your circuit voltage.

21.01 Amps to Watts at Every Voltage

VoltageDCAC (PF 0.85)AC 3-Phase (PF 0.85)
12V
DC, automotive, solar
252.12W 214.3W 371.18W
24V
DC, industrial control
504.24W 428.6W 742.36W
100V
Japan residential
2,101W 1,785.85W 3,093.18W
120V
US residential
2,521.2W 2,143.02W 3,711.82W
208V
US commercial three-phase
4,370.08W 3,714.57W 6,433.82W
220V
Legacy international / parts of Asia
4,622.2W 3,928.87W 6,805W
230V
UK / EU residential
4,832.3W 4,107.46W 7,114.32W
240V
US residential (dryer, range, HVAC)
5,042.4W 4,286.04W 7,423.64W
277V
US commercial lighting
5,819.77W 4,946.8W 8,568.12W
400V
UK / EU commercial three-phase
8,404W 7,143.4W 12,372.73W
460V
US industrial motor (NEC 430.250 column)
9,664.6W 8,214.91W 14,228.64W
480V
US industrial three-phase
10,084.8W 8,572.08W 14,847.28W
575V
Canadian industrial three-phase
12,080.75W 10,268.64W 17,785.8W

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.