Amp to Watt Calculator
Current and power are linked by voltage. Watts = amps × volts. Amps = watts ÷ volts. Always use the actual circuit voltage (120 V, 230 V, 12 V, and so on).
Power1,200 W
Educational use only.
Formula
W = A × V. A = W ÷ V.
How to use this calculator
- Choose direction.
- Enter the known current or power.
- Enter circuit voltage.
Examples
10 A at 120 V
1,200 W.
FAQ
Three-phase?+
Use P = √3 × V × I × PF for three-phase real power — not this simple form.
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