Convert Kilojoules to Watt-hours
One kilojoule equals 0.277778 watt-hours. Type any value to convert kilojoules to watt-hours instantly — with a full reference table below.
Convert Kilojoules to Watt-hours
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Conversion formula
To convert kilojoules to watt-hours, multiply by 0.277778. One kilojoule equals 0.277778 Wh, and one watt-hour equals 3.6 kJ.
Kilojoules to Watt-hours table
About converting Kilojoules to Watt-hours
Kilojoules (kJ) and Watt-hours (Wh) are both units of energy. The exact factor is 1 kJ = 0.277778 Wh, so multiply by 0.277778 to go from kilojoules to watt-hours (or divide to go back).
The conversion is exact and runs entirely in your browser. Need the reverse? Use the Watt-hours to Kilojoules converter, or the full unit converter for every unit at once.
Frequently asked questions
How many watt-hours are in one kilojoule?
One kilojoule equals 0.277778 watt-hours.
How do I convert kilojoules to watt-hours?
Multiply the number of kilojoules by 0.277778. For example, 10 kilojoules = 2.777778 watt-hours.
What is 5 kilojoules in watt-hours?
5 kilojoules is 1.388889 watt-hours.