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Kilowatt-hours to Kilojoules Converter

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

1 kWh = 3,600 kilojoules

Free and instant — every calculation runs in your browser. Nothing is uploaded.

Quick Answer

1 kilowatt-hour equals 3,600 kilojoules. To convert kilowatt-hours to kilojoules, multiply the value by this factor.

Key Facts

  • Reverse: 1 kilojoule = 0.000277778 kilowatt-hours.

Kilowatt-hours to Kilojoules Formula

Formula: value × 3,600

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

Kilowatt-hours to Kilojoules Conversion Table

Kilowatt-hours (kWh)Kilojoules (kJ)
1 kWh3,600 kJ
2 kWh7,200 kJ
5 kWh18,000 kJ
10 kWh36,000 kJ
25 kWh90,000 kJ
50 kWh180,000 kJ
100 kWh360,000 kJ
250 kWh900,000 kJ
500 kWh1,800,000 kJ
1,000 kWh3,600,000 kJ

Frequently Asked Questions

How do I convert kilowatt-hours to kilojoules?

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

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

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

What are some common kilowatt-hours to kilojoules conversions?

1 kWh = 3,600 kJ; 10 kWh = 36,000 kJ; 100 kWh = 360,000 kJ. 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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