221 Watts to Amps

221 watts is 1.84 amps at 120V (DC). The exact amperage depends on your voltage and whether the circuit is DC or AC.

221 Watts to Amps at Every Voltage

VoltageDCAC (PF 0.85)AC 3-Phase (PF 0.85)
12V
DC, automotive, solar
18.42A 21.67A 12.51A
24V
DC, industrial control
9.21A 10.83A 6.25A
100V
Japan residential
2.21A 2.6A 1.5A
120V
US residential
1.84A 2.17A 1.25A
208V
US commercial three-phase
1.06A 1.25A 0.7217A
220V
Legacy international / parts of Asia
1A 1.18A 0.6823A
230V
UK / EU residential
0.9609A 1.13A 0.6527A
240V
US residential (dryer, range, HVAC)
0.9208A 1.08A 0.6255A
277V
US commercial lighting
0.7978A 0.9386A 0.5419A
400V
UK / EU commercial three-phase
0.5525A 0.65A 0.3753A
460V
US industrial motor (NEC 430.250 column)
0.4804A 0.5652A 0.3263A
480V
US industrial three-phase
0.4604A 0.5417A 0.3127A
575V
Canadian industrial three-phase
0.3843A 0.4522A 0.2611A

Other Wattages

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.