kJ → W⋅hr converter

Convert kilojoules to watt-hour (Energy)

1 kJ = 0.2777777778 W⋅hr · 1 W⋅hr = 3.6 kJ

Common values: 10 kJ 50 kJ 100 kJ 500 kJ 1000 kJ

1000 kJ = 277.777777778 W⋅hr

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Kilojoules to watt-hour Conversion

1 kilojoules (kJ) is equal to 0.2777777778 watt-hour (W⋅hr).

1 kJ = 0.2777777778 W⋅hr

or

1 W⋅hr = 3.6 kJ

Formula

To convert a energy from kilojoules (kJ) to watt-hour (W⋅hr), divide the energy in kilojoules by 3.6

e(W⋅hr) = e(kJ) / 3.6

Examples:

Convert 1000 kilojoules to watt-hour:

e(W⋅hr) = 1000kJ / 3.6 = 277.7777778 W⋅hr

Conversion table

Kilojoules (kJ) Watt-hour (W⋅hr)
1 kJ 0.277777778 W⋅hr
2 kJ 0.555555556 W⋅hr
3 kJ 0.833333333 W⋅hr
5 kJ 1.388888889 W⋅hr
10 kJ 2.777777778 W⋅hr
20 kJ 5.555555556 W⋅hr
25 kJ 6.944444444 W⋅hr
50 kJ 13.888888889 W⋅hr
100 kJ 27.777777778 W⋅hr
250 kJ 69.444444444 W⋅hr
500 kJ 138.888888889 W⋅hr
1000 kJ 277.777777778 W⋅hr
Watt-hour (W⋅hr) Kilojoules (kJ)
1 W⋅hr 3.6 kJ
2 W⋅hr 7.2 kJ
3 W⋅hr 10.8 kJ
5 W⋅hr 18 kJ
10 W⋅hr 36 kJ
20 W⋅hr 72 kJ
25 W⋅hr 90 kJ
50 W⋅hr 180 kJ
100 W⋅hr 360 kJ
250 W⋅hr 900 kJ
500 W⋅hr 1800 kJ
1000 W⋅hr 3600 kJ

Frequently asked questions

How do I convert kilojoules to watt-hour?

Divide the value in kilojoules by 3.6 to get the result in watt-hour. For example, 5 kJ ÷ 3.6 = 1.388888889 W⋅hr.

How many watt-hour are in 1 kilojoules?

1 kilojoules (kJ) is equal to 0.277777778 watt-hour (W⋅hr).

How do I convert watt-hour back to kilojoules?

Use the inverse operation: multiply the value in watt-hour by 3.6 to get the result in kilojoules.

How accurate is the kilojoules to watt-hour conversion?

The converter multiplies by the conversion factor 3.6 and rounds the result to 9 decimal places by default. You can increase or reduce the precision with the digits option on this page.

Sources

Conversion factors are based on internationally recognised standards:

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