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To convert from Megajoule (MJ) to Kilowatt-hour (kWh), use the following formula:
Let's convert 5 Megajoule (MJ) to Kilowatt-hour (kWh).
Using the formula:
Therefore, 5 Megajoule (MJ) is equal to Kilowatt-hour (kWh).
Here are some quick reference conversions from Megajoule (MJ) to Kilowatt-hour (kWh):
| Megajoules | Kilowatt-hours |
|---|---|
| 0.000001 MJ | kWh |
| 0.001 MJ | kWh |
| 0.1 MJ | kWh |
| 1 MJ | kWh |
| 2 MJ | kWh |
| 3 MJ | kWh |
| 4 MJ | kWh |
| 5 MJ | kWh |
| 6 MJ | kWh |
| 7 MJ | kWh |
| 8 MJ | kWh |
| 9 MJ | kWh |
| 10 MJ | kWh |
| 20 MJ | kWh |
| 30 MJ | kWh |
| 40 MJ | kWh |
| 50 MJ | kWh |
| 100 MJ | kWh |
| 1000 MJ | kWh |
| 10000 MJ | kWh |
For all Energy converters, choose units using the From/To dropdowns above.
Ever looked at a food label outside the US or heard about the energy of a lightning bolt and seen the term 'megajoule' or 'MJ'?
What exactly is it?
In this simple guide, we'll break down what a megajoule is, how big it is, and where you'll see it used in everyday life and science.
A Megajoule (MJ) is a unit of energy in the International System of Units (SI), equal to one million Joules (106 J).
The plural form is Megajoules.
To visualize the energy in a single megajoule, it helps to use a powerful real-world comparison.
One megajoule (1 MJ) is roughly the same as the kinetic energy of a one-tonne car traveling at 160 km/h (about 100 mph).
This comparison shows just how much energy a single megajoule represents, making it a key unit for measuring large energy transfers in fields like physics and engineering.
In many countries, including Australia and New Zealand, the megajoule (MJ) and kilojoule (kJ) are the standard units on nutritional labels to measure the energy content of food, instead of Calories (kcal).
To understand these labels, it's helpful to know the conversion:
One megajoule (MJ) is equal to approximately 239 food Calories (kcal).
This makes the MJ a critical unit for international dietary and health management.
The megajoule is a common unit for quantifying large-scale energy events and outputs in science and technology.
For example:
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.