⚡ Energy converter

Kilowatt-hour to Joule Converter

Convert kilowatt hours (kWh) to joules (J) instantly with the exact formula, a conversion table and chart.

kWh

Results

Joules
3,600,000 J
Same value in every unit

📊 Kilowatt-hour to Joule chart

Kilowatt-hour to Joule — plotted against kilowatt-hour (kwh).

How to convert kilowatt hours to joules

To convert kilowatt hours to joules, multiply by 3,600,000. Energy conversions connect nutrition, electricity bills, heating systems and physics.

J = kWh × 3,600,000 kWh = J ÷ 3,600,000
Kilowatt-hour to Joule conversion – kWh to J formula illustration
Kilowatt-hour (kWh) → Joule (J) at a glance.

Kilowatt-hour to Joule conversion table

Kilowatt-hour (kWh)Joule (J)
0.1 kWh360,000 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
10 kWh36,000,000 J
20 kWh72,000,000 J
25 kWh90,000,000 J
50 kWh180,000,000 J
100 kWh360,000,000 J
500 kWh1,800,000,000 J
1,000 kWh3,600,000,000 J

About the units

Kilowatt-hour (kWh)

A kilowatt-hour equals 3.6 million joules and is the unit on electricity bills.

Joule (J)

The joule is the SI unit of energy, the work done by one newton over one meter.

How to use this converter

  1. Type the number of kilowatt hours (kWh) in the input box.
  2. The result in joules appears instantly — no button needed.
  3. See the same value in every other energy unit just below.
  4. Use “Swap units” to convert joules back to kilowatt hours.

Tips for better results

  • Double-check which system a unit belongs to (for example US vs UK gallons).
  • Use the swap button to convert in the opposite direction instantly.
  • Bookmark the conversions you use most — each pair has its own page.

Frequently asked questions

How many joules are in one kilowatt-hour?

One kilowatt-hour equals 3,600,000 joules. 3,600,000 is the exact factor used by this converter.

How do I convert kilowatt hours to joules?

Multiply the value in kilowatt hours by 3,600,000. To go the other way, multiply joules by 2.77777778e-7.

What is 10 kWh in J?

10 kWh = 36,000,000 J. Also, 5 kWh = 18,000,000 J and 100 kWh = 360,000,000 J.

What is the difference between a kilowatt-hour and a joule?

A kilowatt-hour equals 3.6 million joules and is the unit on electricity bills. The joule is the SI unit of energy, the work done by one newton over one meter.

Is this tool free and private?

Yes — the Kilowatt-hour to Joule is completely free with no sign-up, and it runs entirely in your browser, so the values you enter are never uploaded to our servers.

Related tools

Energy ConverterConvert any energy unit to all others at once — J, kJ, cal, kcal, kWh, BTU.Joule to Kilowatt-hourConvert joules (J) to kilowatt hours (kWh) instantly with the exact formula, a…Kilowatt-hour to KilojouleConvert kilowatt hours (kWh) to kilojoules (kJ) instantly with the exact formula, a…Kilowatt-hour to CalorieConvert kilowatt hours (kWh) to calories (cal) instantly with the exact formula, a…Kilowatt-hour to KilocalorieConvert kilowatt hours (kWh) to kilocalories (kcal) instantly with the exact formula,…Kilowatt-hour to BTUConvert kilowatt hours (kWh) to BTU (BTU) instantly with the exact formula, a…

📬 Get new tools first — free

Join Taurang to hear about new calculators, converters and features. No spam; unsubscribe anytime.

Create free account