Watt to Kilowatt hour

Watts to Kilowatt-Hour Converter

How to Convert Watts (W) to Kilowatt-hours (kWh)

To convert Watts (W) to Kilowatt-hours (kWh), you can use the following formula:

W to kWh Calculation Formula

The energy E in kilowatt-hours (kWh) is equal to the power P in watts (W) multiplied by the time t in hours (h) and then divided by 1,000:

E(kWh) = (P(W) ร— t(h)) / 1,000

Example Calculation

If you have a power measurement of 1,500 W and you run it for 2 hours, the calculation would be:

E(kWh) = (1,500 W ร— 2 h) / 1,000 = 3 kWh

Power (W)

Watts (W) are the standard SI unit of power, measuring the rate at which energy is transferred or work is done. One watt is defined as one joule of energy per second. Learn more about watts and power measurements.

Time (h)

Time in hours represents the duration of power consumption or generation. It’s essential for calculating total energy usage as energy is the product of power and time.

Energy (kWh)

Kilowatt-hours (kWh) measure electrical energy consumption. One kWh equals the energy transferred when 1,000 watts of power is sustained for one hour, commonly used in electrical utility billing.

Pro Tip

Always consider the duration of usage when calculating energy consumption to get accurate results!

Watts to Kilowatt-hours Conversion Table

Formula: kWh = (W ร— Time in hours) / 1000

Watts [W] Kilowatt-hours at 1 hour Kilowatt-hours at 2 hours Kilowatt-hours at 3 hours Kilowatt-hours at 4 hours
1000 W 1 kWh 2 kWh 3 kWh 4 kWh
2000 W 2 kWh 4 kWh 6 kWh 8 kWh
3000 W 3 kWh 6 kWh 9 kWh 12 kWh
4000 W 4 kWh 8 kWh 12 kWh 16 kWh
5000 W 5 kWh 10 kWh 15 kWh 20 kWh
10000 W 10 kWh 20 kWh 30 kWh 40 kWh

Author

  • Manish Kumar

    Manish holds a B.Tech in Electrical and Electronics Engineering (EEE) and an M.Tech in Power Systems, with over 10 years of experience in Metro Rail Systems, specializing in advanced rail infrastructure. He is also a NASM-certified fitness and nutrition coach with more than a decade of experience in weightlifting and fat loss coaching. With expertise in gym-based training, lifting techniques, and biomechanics, Manish combines his technical mindset with his passion for fitness.

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