Select a category and enter your values below
To convert from Kilowatt-hour (kWh) to Kilojoule (kJ), use the following formula:
Kilojoule (kJ)
= 60 × 60 × 1000 × 11000× Kilowatt-hour (kWh)
= 3600× Kilowatt-hour (kWh)
Let's convert 5 Kilowatt-hour (kWh) to Kilojoule (kJ).
Using the formula:
5 × 3600 = 18000
Therefore, 5 Kilowatt-hour (kWh) is equal to 18000 Kilojoule (kJ).
How many kilowatt-hours are in one kilojoule? One Kilojoule (kJ) contains 0.00027777777777777777778 Kilowatt-hours (kWh) — the inverse of the factor above. Multiplying by 3600 takes you from kilowatt-hours to kilojoules; multiplying by 0.00027777777777777777778 brings you back.
Put in words: one kilowatt-hour equals 3600 kilojoules, so the kilowatt-hour is the larger unit of this pair. Converting between them never changes the amount of energy being measured — only the size of the unit you count it in.
A kilowatt-hour (kWh) is a measurement of energy. It's the standard unit your utility company uses to measure how much electricity you use.
While it has a technical definition (one kWh equals 3.6 million Joules), it's much easier to understand in terms of how you use appliances at home.
Your utility company uses the kilowatt-hour (kWh) to bill you for the total amount of electrical energy your home or business consumes over a period.
Every appliance, from your refrigerator to your television, has a power rating in watts.
When you use a 1,000-watt (or 1-kilowatt) appliance for one full hour, you consume exactly one kilowatt-hour of energy. This usage is tracked by your electric meter and shows up on your monthly bill.
A common point of confusion is the distinction between a kilowatt (kW) and a kilowatt-hour (kWh).
Here's a simple analogy to make it clear: Kilowatts (kW) are like your car's speed, and kilowatt-hours (kWh) are like the distance you travel.
Power (kW) measures how fast you're using energy right now (your speed).
Energy (kWh) measures the total amount of electricity you used over your entire journey (the distance you traveled).
To put it in perspective, one kilowatt-hour (kWh) is a significant amount of energy that can power various common household activities.
For example, a single kWh can let you:
This unit provides a tangible way to understand and track your daily energy consumption.
A kilojoule (kJ) is a unit used to measure energy.
Just like a kilometer is 1,000 meters, a kilojoule is 1,000 joules. Kilojoules are part of the International System of Units (SI), the modern form of the metric system.
They are used worldwide to measure energy in food, physics, and everyday life.
Key Takeaways:
In nutrition, kilojoules (kJ) are the international standard for measuring the energy we get from food and drinks.
You'll often see them listed alongside calories (cal) on nutrition labels, especially outside of the United States.
Understanding the relationship between them is easy. The conversion is simple: 1 calorie is about 4.2 kilojoules.
Knowing this helps you accurately track your energy intake and easily compare food products, no matter where you are in the world.
As a multiple of the joule, the kilojoule (kJ) is a fundamental unit for measuring work and energy in scientific fields like physics and chemistry.
One kilojoule (1,000 joules) is roughly the energy needed to lift a 100-kg (220-lb) object one meter off the ground.
This standardization allows scientists to make precise and consistent energy calculations in experiments and research.
Beyond food labels and science labs, kilojoules help quantify the energy we use for everyday activities and appliances.
Thinking in kilojoules offers a practical way to understand and manage your personal energy expenditure.
For example:
Here are some quick reference conversions from Kilowatt-hour (kWh) to Kilojoule (kJ):
| Kilowatt-hours | Kilojoules |
|---|---|
| 0.000001 kWh | 0.0036 kJ |
| 0.001 kWh | 3.6 kJ |
| 0.1 kWh | 360 kJ |
| 1 kWh | 3600 kJ |
| 2 kWh | 7200 kJ |
| 3 kWh | 10800 kJ |
| 4 kWh | 14400 kJ |
| 5 kWh | 18000 kJ |
| 6 kWh | 21600 kJ |
| 7 kWh | 25200 kJ |
| 8 kWh | 28800 kJ |
| 9 kWh | 32400 kJ |
| 10 kWh | 36000 kJ |
| 20 kWh | 72000 kJ |
| 30 kWh | 108000 kJ |
| 40 kWh | 144000 kJ |
| 50 kWh | 180000 kJ |
| 100 kWh | 360000 kJ |
| 1000 kWh | 3600000 kJ |
| 10000 kWh | 36000000 kJ |
For all Energy converters, choose units using the From/To dropdowns above.