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Kilojoules to Kilowatt-hours Converter

Free instant kJ → kWh converter. No signup, no uploads — everything is calculated privately in your browser.

Value

From

1 kJ = 0.000277778 kilowatt-hours

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Quick Answer

1 kilojoule equals 0.000277778 kilowatt-hours. To convert kilojoules to kilowatt-hours, multiply the value by this factor.

Key Facts

Reverse: 1 kilowatt-hour = 3,600 kilojoules.

Kilojoules to Kilowatt-hours Formula

Formula: value ÷ 3,600

Prefer to skip the math? Type any value in the converter above and it converts instantly.

Kilojoules to Kilowatt-hours Conversion Table

Kilojoules (kJ)	Kilowatt-hours (kWh)
1 kJ	0.000277778 kWh
2 kJ	0.000555556 kWh
5 kJ	0.00138889 kWh
10 kJ	0.00277778 kWh
25 kJ	0.00694444 kWh
50 kJ	0.0138889 kWh
100 kJ	0.0277778 kWh
250 kJ	0.0694444 kWh
500 kJ	0.138889 kWh
1,000 kJ	0.277778 kWh

Frequently Asked Questions

How do I convert kilojoules to kilowatt-hours?

Enter the value above and the result appears instantly — the calculation runs entirely in your browser. Formula: value ÷ 3,600.

What is the exact kilojoules to kilowatt-hours conversion factor?

1 kilojoule = 0.000277778 kilowatt-hours (shown to 6 significant figures — the converter itself computes at full precision). The reverse factor is 1 kilowatt-hour = 3,600 kilojoules.

What are some common kilojoules to kilowatt-hours conversions?

1 kJ = 0.000277778 kWh; 10 kJ = 0.00277778 kWh; 100 kJ = 0.0277778 kWh. Use the full conversion table below for more reference values.

Is a calorie the same as a food Calorie?

No — and the capital letter matters. A food Calorie (with a capital C) is a kilocalorie: 1,000 small calories. This converter treats them correctly: 1 kcal = 4.184 kJ = 1,000 cal. Energy labels on food almost always mean kilocalories, even where the label just says "calories".

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