Kilojoules to Kilowatt-hours – kilojoule to kilowatt-hour Converter

1 kJ ≈ 0.000277778 kWh

kilojoules (kJ)

kilowatt-hours (kWh)0.000277778

Formula

kWh = kJ × ≈ 0.000277778

Kilojoules to kilowatt-hours conversion table

kilojoules (kJ)	kilowatt-hours (kWh)
0.25 kJ	0.0000694444 kWh
0.5 kJ	0.000138889 kWh
1 kJ	≈ 0.000277778 kWh
2 kJ	0.000555556 kWh
5 kJ	0.00138889 kWh
10 kJ	0.00277778 kWh
20 kJ	0.00555556 kWh
50 kJ	0.0138889 kWh
100 kJ	0.0277778 kWh
200 kJ	0.0555556 kWh
500 kJ	0.138889 kWh
1000 kJ	0.277778 kWh
2500 kJ	0.694444 kWh
5000 kJ	1.38889 kWh
10000 kJ	2.77778 kWh

Kilojoules and kilowatt-hours are both energy units. One kilojoule is approximately 0.000277778 kilowatt-hours; enter any value above for an instant result, or use the table for common conversions.

Sanity-check examples

1 kJ = 0.000277778 kWh
10 kJ = 0.00277778 kWh
2.5 kJ = 0.000694444 kWh

Common pitfalls and look-alike units

The "Calorie" on food labels and in fitness is the kilocalorie (kcal): 1 kcal = 4184 J, and the small calorie (cal) is one thousandth of it. This page uses the thermochemical calorie (1 cal = 4.184 J); the International Steam Table calorie is about 4.1868 J, so values differ slightly. The "degree" (度) on a Chinese electricity bill is one kilowatt-hour, and 1 kWh = 3600 kJ.

Frequently asked questions

How many kilowatt-hours are in a kilojoule?

1 kilojoule (kJ) is approximately 0.000277778 kilowatt-hour (kWh).

How do I convert kilojoules to kilowatt-hours?

Multiply the kilojoule value by ≈ 0.000277778 to get kilowatt-hour — for example, 2 kilojoules = 0.000555556 kilowatt-hour.

How do I convert kilowatt-hours back to kilojoules?

1 kilowatt-hour equals 3600 kilojoule. Use the swap button or the reverse conversion page linked on this page.

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