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Convert Joules to Kilowatt-hours

1 joule = 2.7777778e-7 kilowatt-hours. Multiply the number of joules by 2.77777777778e-7.

Result
2.777777778e-7

1 J = 2.777777778e-7 kWh

Multiply the number of joules by 2.77777777778e-7.

Results are rounded for display. Double-check values for critical work.

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Popular energy & work conversions

Joules to Kilowatt-hours table

JoulesKilowatt-hours
1 J2.7777778e-7 kWh
2 J5.5555556e-7 kWh
3 J8.3333333e-7 kWh
4 J0.0000011111111 kWh
5 J0.0000013888889 kWh
10 J0.0000027777778 kWh
20 J0.0000055555556 kWh
25 J0.0000069444444 kWh
50 J0.000013888889 kWh
100 J0.000027777778 kWh
500 J0.00013888889 kWh
1000 J0.00027777778 kWh

About these units

The joule (J) is an SI base or derived unit of energy & work.

The kilowatt-hour (kWh) is a metric unit of energy & work, equal to 3,600,000 joules.

Going the other way, 1 kilowatt-hour = 3,600,000 joules. Diet calories, electricity bills in kilowatt-hours, boiler ratings in BTU and particle physics in electronvolts are all the same physical quantity. Convert energy across every scale from the atomic to the industrial.

Frequently asked

How many kilowatt-hours are in a joule?
1 joule = 2.7777778e-7 kilowatt-hours.
How do you convert joules to kilowatt-hours?
Multiply the number of joules by 2.77777777778e-7.
What is 10 J in kWh?
10 J = 0.0000027777778 kWh.

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