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Kilowatt-hours to Joules Converter

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

1 kWh = 3,600,000 joules

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

Quick Answer

1 kilowatt-hour equals 3,600,000 joules. To convert kilowatt-hours to joules, multiply the value by this factor.

Key Facts

  • Reverse: 1 joule = 2.77778e-7 kilowatt-hours.

Kilowatt-hours to Joules Formula

Formula: value × 3,600,000

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

Kilowatt-hours to Joules Conversion Table

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

Frequently Asked Questions

How do I convert kilowatt-hours to joules?

Enter the value above and the result appears instantly — the calculation runs entirely in your browser. Formula: value × 3,600,000.

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

1 kilowatt-hour = 3,600,000 joules (shown to 6 significant figures — the converter itself computes at full precision). The reverse factor is 1 joule = 2.77778e-7 kilowatt-hours.

What are some common kilowatt-hours to joules conversions?

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