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Online Watts to kWh Calculator

Power W
Time hr
Result kWh

Watts :

  • Watt (W) is the SI unit of power.
  • It represents the rate of energy transfer.

kWh :

  • Kilowatt-hour (kWh) is a unit of electrical energy.
  • 1 kWh equals 1000 watts used for one hour.
  • Commonly used for electricity billing.

Watts to kWh :

  • This calculator converts power in watts to energy in kilowatt-hours.
  • Formula: kWh = (W × hours) ÷ 1000
  • Helps estimate energy consumption over time.

How to Calculate ?

  • Enter the power in watts.
  • Enter the time duration in hours.
  • Click “Calculate” to get kWh.
  • Click “Reset” to clear all values.

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