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kWh to Joules Converter

Convert kWh to Joules instantly: 1 kilowatt-hour = 3,600,000 joules. Free kwh to joules converter with formula, chart and examples.

1 kilowatt-hour = 3,600,000 joules

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Quick answer

To convert kilowatt-hours to joules, multiply the number of kilowatt-hours by 3,600,000. For example, 0.001 kilowatt-hours = 3,600 joules.

Last updated · Conversion factors follow the SI definitions in the BIPM SI Brochure and NIST SP 811.

How to Convert kWh to Joules

The formula is joules = kilowatt-hours × 3,600,000. 1 kilowatt-hour = 3,600,000 joules. Type any value in the converter above for an instant answer, or use the chart below for the most common values.

This page is preset for kilowatt-hour to joule conversions, but you can switch either list to any of the 54 units in the Energy Converter.

kWh to Joules conversion chart

kWhJoules
0.001 kWh3,600 J
0.1 kWh360,000 J
0.25 kWh900,000 J
0.5 kWh1,800,000 J
1 kWh3,600,000 J
2 kWh7,200,000 J
3 kWh10,800,000 J
4 kWh14,400,000 J
5 kWh18,000,000 J
6 kWh21,600,000 J
7 kWh25,200,000 J
8 kWh28,800,000 J
9 kWh32,400,000 J
10 kWh36,000,000 J
11 kWh39,600,000 J
12 kWh43,200,000 J
13 kWh46,800,000 J
14 kWh50,400,000 J
15 kWh54,000,000 J
16 kWh57,600,000 J
17 kWh61,200,000 J
18 kWh64,800,000 J
19 kWh68,400,000 J
20 kWh72,000,000 J
25 kWh90,000,000 J
30 kWh108,000,000 J
40 kWh144,000,000 J
50 kWh180,000,000 J
60 kWh216,000,000 J
70 kWh252,000,000 J
75 kWh270,000,000 J
80 kWh288,000,000 J
90 kWh324,000,000 J
100 kWh360,000,000 J
150 kWh540,000,000 J
200 kWh720,000,000 J
250 kWh900,000,000 J
500 kWh1,800,000,000 J
1,000 kWh3,600,000,000 J

Common kWh to Joules conversions

  • 1 kilowatt-hour = 3,600,000 joules
  • 0.001 kWh = 3,600 J
  • 0.1 kWh = 360,000 J
  • 1 kWh = 3,600,000 J
  • 10 kWh = 36,000,000 J
  • 100 kWh = 360,000,000 J

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How to Use the kWh to Joules Converter

  1. Type a value in the From box and choose its unit.
  2. Pick the unit you want in the To list — the result updates as you type.
  3. Use the swap button to reverse the conversion, or type in the To box to convert backwards.
  4. Check the All conversions table to see your value in every unit; click a row to make it the target.

Frequently Asked Questions

How many joules are in a kilowatt-hour?

There are 3,600,000 joules in 1 kilowatt-hour. Going the other way, 1 joule = 2.777777778E-7 kilowatt-hours.

How do I convert kWh to Joules?

Use the formula joules = kilowatt-hours × 3,600,000. For example, 1 kilowatt-hour = 3,600,000 joules. Or type the value in the converter above and the answer appears as you type.

What is the kWh to Joules formula?

joules = kilowatt-hours × 3,600,000 — the conversion factor is exact, using the international definitions of both units.

What is 0.001 kilowatt-hours in joules?

0.001 kilowatt-hours = 3,600 joules.

What is 0.1 kilowatt-hours in joules?

0.1 kilowatt-hours = 360,000 joules.

What is 1 kilowatt-hour in joules?

1 kilowatt-hour = 3,600,000 joules.

What is 10 kilowatt-hours in joules?

10 kilowatt-hours = 36,000,000 joules.

What is 100 kilowatt-hours in joules?

100 kilowatt-hours = 360,000,000 joules.

Is this kWh to Joules converter accurate?

Yes. It uses exact unit definitions and double-precision maths, and you can show up to 15 significant digits. The table below is calculated with the same formula.

Can I convert kWh to other energy units?

Yes — pick any unit in the From and To lists above, or open the full Energy Converter, which handles 54 energy units.

Is the kWh to Joules converter free?

Yes, it is free with no sign-up, and every conversion runs in your browser so nothing is sent to a server.