Watts to Joules
Power converter

Amps to Watts Calculator

Find power in watts from current in amps and voltage.

A
V
  • DC
  • AC — single phase
  • AC — three phase

How Amps to Watts works

Watts measure electric power. For a DC circuit, power = current × voltage (P = I × V).

Knowing the total wattage helps you calculate energy consumption in joules or kWh over time.

Formula
1P = I × V (DC)DC
2P = I × V × PF (AC 1-phase)

PF is Power Factor.

Amps to Watts conversion table

Reference Table4 rows
Amps to watts at common voltages (DC).
Current↕At 12 V↕At 120 V↕At 240 V↕
1 A
12 W
120 W
240 W
5 A
60 W
600 W
1,200 W
10 A
120 W
1,200 W
2,400 W
15 A
180 W
1,800 W
3,600 W
💡 Click any row to auto-fill the calculator aboveClick column headers to sort

FAQ: Amps to Watts

How do you convert amps to watts?

Multiply current in amps by voltage in volts: watts = amps × volts.

Tools related to Amps to Watts

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