Convert Volts to Watts

Last updated on July 26, 2025

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Volts to Watts Calculator

Here you can understand how electrical power is calculated using voltage and current, then only you complete your task, project or whatever.

  • Watts is a measurement rate of energy used or generated in an electrical system.
  • The basic formula is: Watts = Volts × Amps (for DC circuits).
  • For AC circuits, the formula becomes:
    • Single-phase AC: Watts = Volts × Amps × Power Factor
    • Three-phase AC: Watts = √3 × Volts × Amps × Power Factor
  • Default pf accounts for efficiency in AC systems is from 0 and upto 1.
  • This tool helps you calculate the power based on your circuit type and values.
Volts (V)Watts (W)
100 V100 W
115 V115 W
125 V125 W