kilojoule to watt-hour

Live kilojoule (kJ) to watt-hour (Wh) converter. Plus a 10-value reference table and FAQs.

kilojoule
watt-hour
1 kJ = 0.2778Wh

Conversion table

Ten sample values from kilojoule to watt-hour. Use the converter above for arbitrary values.

kilojoule (kJ)watt-hour (Wh)
0.001 kJ 0.000278 Wh
0.01 kJ 0.002778 Wh
0.1 kJ 0.027778 Wh
0.5 kJ 0.138889 Wh
1 kJ 0.277778 Wh
2 kJ 0.555556 Wh
5 kJ 1.388889 Wh
10 kJ 2.777778 Wh
100 kJ 27.777778 Wh
1,000 kJ 277.777778 Wh

About the kilojoule

1000 J. Food labels in some countries.

About the watt-hour

1 W sustained for 1 hour (3600 J).

Frequently asked questions

Frequently Asked Questions

How do I convert kilojoule to watt-hour?

Multiply the kilojoule value by 0.277778 to get it in watt-hour. For example, 10 kJ = 2.7778 Wh.

What is 1 kJ in Wh?

1 kJ = 0.277778 Wh.

What is 100 kJ in Wh?

100 kJ = 27.7778 Wh.

What is the formula?

Linear: multiply by 0.277778 (the unit factor ratio).

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