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Kilowatt-hours to kilojoules

1 kilowatt-hour in kilojoules
1 kWh = 3,600 kJ
kJ = kWh × 3,600

To convert kilowatt-hours to kilojoules, multiply by 3,600. The table below gives the values people look up most often, and the converter works for any number.

Kilowatt-hours to kilojoules table

Common kilowatt-hour values converted to kilojoules.
Kilowatt-hours Kilojoules
1 kWh 3,600
2 kWh 7,200
3 kWh 10,800
4 kWh 14,400
5 kWh 18,000
10 kWh 36,000
15 kWh 54,000
20 kWh 72,000
25 kWh 90,000
30 kWh 108,000
40 kWh 144,000
50 kWh 180,000
75 kWh 270,000
100 kWh 360,000
250 kWh 900,000
500 kWh 1,800,000
1,000 kWh 3,600,000

How the conversion works

The relationship is kJ = kWh × 3,600. Both units measure energy, so the conversion is a fixed factor that never changes.

Common questions

How many kilojoules are in one kilowatt-hour?
One kilowatt-hour equals 3,600 kilojoules. kJ = kWh × 3,600.
How do you convert kilowatt-hours to kilojoules?
Use kJ = kWh × 3,600. So 10 kWh is 36,000 kJ.
How many kilowatt-hours are in one kilojoule?
One kilojoule equals 0.0002778 kilowatt-hours, 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