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Power and Energy

kJtokWh

Convert kilojoules (kJ) to kilowatt-hours (kWh).

Factor1 kJ = 0.0002777778 kWh

Converter

kJ

Accepts numbers or expressions, e.g. 150 + 14.7

Result
1kWh

Rendered to 6 significant figures.

Formula

Formula
kWh = kJ × 0.0002777778

Multiply any value in kilojoules by 0.0002777778 to obtain the value in kilowatt-hours.

Worked example

Convert 3600 kJ to kWh.

  1. 01Start with 3600 kJ.
  2. 02Multiply by the conversion factor: 3600 × 0.0002777778 = 1 kWh.
Result3600 kJ = 1 kWh

Conversion table

kJkWh
10.00027778
20.00055556
50.0013889
100.0027778
200.0055556
500.013889
1000.027778
2000.055556
5000.13889
10000.27778

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from kJ to kWh?
1 kJ equals 0.0002777778 kWh. To convert, multiply the value in kilojoules by 0.0002777778.
How do I convert 1 kJ to kWh?
1 kJ = 0.000277778 kWh. For any value, multiply by 0.0002777778.
How do I convert kWh back to kJ?
Divide by the same factor — or equivalently, multiply by 3600. So 1 kWh = 3600 kJ.
When would I need to convert kilojoule to kilowatt-hour?
Energy conversions are needed when reconciling fuel/electrical billing, calculating thermal duties, and aligning calorimetry or HHV/LHV figures across data sources.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).

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