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Kilojoules to kilowatt-hours

1 kilojoule in kilowatt-hours
1 kJ = 0.0002778 kWh
kWh = kJ × 0.000277777778

To convert kilojoules to kilowatt-hours, multiply by 0.000277777778. The table below gives the values people look up most often, and the converter works for any number.

Kilojoules to kilowatt-hours table

Common kilojoule values converted to kilowatt-hours.
Kilojoules Kilowatt-hours
1 kJ 0.0002778
2 kJ 0.0005556
3 kJ 0.0008333
4 kJ 0.0011111
5 kJ 0.0013889
10 kJ 0.0027778
15 kJ 0.0041667
20 kJ 0.0055556
25 kJ 0.0069444
30 kJ 0.0083333
40 kJ 0.011111
50 kJ 0.013889
75 kJ 0.020833
100 kJ 0.027778
250 kJ 0.069444
500 kJ 0.13889
1,000 kJ 0.27778

How the conversion works

The relationship is kWh = kJ × 0.000277777778. Both units measure energy, so the conversion is a fixed factor that never changes.

Common questions

How many kilowatt-hours are in one kilojoule?
One kilojoule equals 0.0002778 kilowatt-hours. kWh = kJ × 0.000277777778.
How do you convert kilojoules to kilowatt-hours?
Use kWh = kJ × 0.000277777778. So 10 kJ is 0.0027778 kWh.
How many kilojoules are in one kilowatt-hour?
One kilowatt-hour equals 3,600 kilojoules, which is the reverse of the conversion above.

Related pages

Sources

  1. Guide for the Use of the International System of Units (SP 811) — NIST (Public domain (US Government))
  2. The International System of Units (SI Brochure) — Bureau International des Poids et Mesures
  3. Calculated on this page — At One Place

How these figures are compiled and checked