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Convert kj to kwh (Kilojoules to Kilowatt-hours)

Convert kj to kwh instantly (Kilojoules to Kilowatt-hours). 1 kJ = 0.0002777777778 kWh.

Converter

kilojoule (kJ)
kilowatt-hour (kWh)

kJ to kWh conversion table

KilojoulesKilowatt-hours
1 kJ0.00027777778 kWh
2 kJ0.00055555556 kWh
5 kJ0.0013888889 kWh
10 kJ0.0027777778 kWh
25 kJ0.0069444444 kWh
50 kJ0.013888889 kWh
100 kJ0.027777778 kWh
1000 kJ0.27777778 kWh

Formula

kWh = kJ × 0.0002777777778

Worked example

25 kJ × 0.0002777777778 = 0.006944444444 kWh

Popular conversion examples

Choose an example to open this converter with the value filled in. These are useful examples, not a claim about search rankings.

  • 1 kJ to kWh

    0.000277778 kWh. Open the full kj to kwh converter.

    convertly.website/kj-to-kwh/?value=1
  • 5 kJ to kWh

    0.00138889 kWh. Open the full kj to kwh converter.

    convertly.website/kj-to-kwh/?value=5
  • 100 kJ to kWh

    0.0277778 kWh. Open the full kj to kwh converter.

    convertly.website/kj-to-kwh/?value=100
  • 180 kJ to kWh

    0.05 kWh. Open the full kj to kwh converter.

    convertly.website/kj-to-kwh/?value=180
  • 1 kWh to kJ

    3600 kJ. Open the full kwh to kj converter.

    convertly.website/kwh-to-kj/?value=1
  • 8 kWh to kJ

    28800 kJ. Open the full kwh to kj converter.

    convertly.website/kwh-to-kj/?value=8

About kilojoules and kilowatt-hours

Kilojoule (kJ)

A kilojoule is 1,000 joules. It is used for food energy in many countries and for heat and work in engineering.

Kilowatt-hour (kWh)

A kilowatt-hour is 1,000 watt-hours, exactly 3.6 megajoules. It is the unit on household electricity bills.

Both are units of energy; the base unit used internally is J.

Notes

kJ to kWh FAQs

How do I convert kilojoules to kilowatt-hours?

Multiply the number of kilojoules by 0.0002777777778 (equivalently, divide by 3600) to get kilowatt-hours. For example, 25 kJ × 0.0002777777778 = 0.00694444 kWh.

How many kilowatt-hours are in one kilojoule?

1 kJ = 0.0002777777778 kWh and 1 kWh = 3600 kJ. To go the other way, use the kilowatt-hours to kilojoules converter.

How many kilowatt-hours are in 3600 kilojoules?

3600 kJ = 1 kWh, rounded to 6 significant digits. Change the value in the converter above for any other amount.

How many kilowatt-hours are in 2.5 kilojoules?

2.5 kJ = 0.000694444 kWh, rounded to 6 significant digits.

What is the formula for kilojoules to kilowatt-hours?

kWh = kJ × 0.0002777777778, where kJ is the number of kilojoules and kWh is the result in kilowatt-hours. The reverse is kJ = kWh × 3600.

Is the kJ to kWh conversion exact?

The ratio is exact by definition, but its decimal form does not end (0.000277777777778… to 12 significant digits). The converter keeps full precision internally and rounds only the displayed answer, which you can set from 4 to 12 significant digits.

What is the difference between kilojoules and kilowatt-hours?

A kilojoule is 1,000 joules. It is used for food energy in many countries and for heat and work in engineering. A kilowatt-hour is 1,000 watt-hours, exactly 3.6 megajoules. It is the unit on household electricity bills.

Is a kilowatt-hour the same as a kilowatt?

No. A kilowatt (kW) is a rate of using energy, while a kilowatt-hour (kWh) is an amount of energy. A 2 kW heater running for 3 hours uses 6 kWh, which is 21600 kJ.

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