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To convert from Megajoule (MJ) to Milliwatt-hour (mWh), use the following formula:
Let's convert 5 Megajoule (MJ) to Milliwatt-hour (mWh).
Using the formula:
Therefore, 5 Megajoule (MJ) is equal to Milliwatt-hour (mWh).
Here are some quick reference conversions from Megajoule (MJ) to Milliwatt-hour (mWh):
| Megajoules | Milliwatt-hours |
|---|---|
| 0.000001 MJ | mWh |
| 0.001 MJ | mWh |
| 0.1 MJ | mWh |
| 1 MJ | mWh |
| 2 MJ | mWh |
| 3 MJ | mWh |
| 4 MJ | mWh |
| 5 MJ | mWh |
| 6 MJ | mWh |
| 7 MJ | mWh |
| 8 MJ | mWh |
| 9 MJ | mWh |
| 10 MJ | mWh |
| 20 MJ | mWh |
| 30 MJ | mWh |
| 40 MJ | mWh |
| 50 MJ | mWh |
| 100 MJ | mWh |
| 1000 MJ | mWh |
| 10000 MJ | mWh |
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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 Milliwatt-hour (mWh) is a unit used to measure a small amount of energy.
Think of it like a tiny fuel tank for your electronics. It tells you how much energy a small battery can store and deliver over time.
The official abbreviation you'll see on product specifications is mWh.
You'll most commonly see the mWh rating on the batteries of small, portable gadgets.
It's a direct measure of the battery's energy capacity.
For example, a battery rated at 50 mWh holds more energy than one rated at 30 mWh.
While mWh is practical for consumer electronics, scientists and engineers often use Joules (J), the standard international unit of energy.
The conversion is straightforward and is a key factor in technical calculations.
1 mWh = 3.6 JThis conversion helps engineers compare energy specifications across different standards.
To sum it up, here's what you need to remember about mWh: