Online calculator to convert joules to megajoules (J to MJ) with formulas, examples, and tables. Our conversions provide a quick and easy way to convert between Energy units.
Conversion Calculator
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Convert J to megajoules
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Conversion Definitions
The following is a list of definitions relating to conversions between joules and megajoules.
What is a joule (J)?
A joule is a unit of energy in the International System of Units (SI). The symbol for joule is J. There are 1,000,000 joules in a megajoule.
What is a megajoule (MJ)?
A megajoule is a unit of energy in the International System of Units (SI). The symbol for megajoule is MJ. There are 0.000001 megajoules in a joule.
Conversion Formula
Let's take a closer look at the conversion formula so that you can do these conversions yourself with a calculator or with an old-fashioned pencil and paper.
The formula to convert from J to megajoules is:
megajoules = J ÷ 1,000,000
Conversion Example
Next, let's look at an example showing the work and calculations that are involved in converting from joules to megajoules (J to MJ).
Joule to Megajoule Conversion Example
Task: Convert 975,000 joules to megajoules (show work) Formula: J ÷ 1,000,000 = megajoules Calculations: 975,000 J ÷ 1,000,000 = 0.975 megajoules Result: 975,000 J is equal to 0.975 megajoules
Conversion Table
For quick reference purposes, below is a conversion table that you can use to convert from joules to megajoules.
Joules to Megajoules Conversion Chart
| joules (J) | megajoules (MJ) |
|---|---|
| 1 J | 0.000001 MJ |
| 2 J | 0.000002 MJ |
| 3 J | 0.000003 MJ |
| 4 J | 0.000004 MJ |
| 5 J | 0.000005 MJ |
| 6 J | 0.000006 MJ |
| 7 J | 0.000007 MJ |
| 8 J | 0.000008 MJ |
| 9 J | 0.000009 MJ |
| 10 J | 0.00001 MJ |
| 20 J | 0.00002 MJ |
| 30 J | 0.00003 MJ |
| 40 J | 0.00004 MJ |
| 50 J | 0.00005 MJ |
| 75 J | 0.000075 MJ |
| 100 J | 0.0001 MJ |
| 250 J | 0.00025 MJ |
| 500 J | 0.0005 MJ |
| 750 J | 0.00075 MJ |
| 1,000 J | 0.001 MJ |
| 2,500 J | 0.0025 MJ |
| 5,000 J | 0.005 MJ |
| 7,500 J | 0.0075 MJ |
| 10,000 J | 0.01 MJ |
| 25,000 J | 0.025 MJ |
| 50,000 J | 0.05 MJ |
| 75,000 J | 0.075 MJ |
| 100,000 J | 0.1 MJ |
| 250,000 J | 0.25 MJ |
Related Units
This table provides a summary of the Energy units within their respective measurement systems.
| Unit | Symbol | Measurement System |
|---|---|---|
| calories (thermochemical) | cal | International System of Units (SI) |
| kilocalories | kcal | International System of Units (SI) |
| British Thermal Unit | BTU or Btu | Imperial System |
| joules | J | International System of Units (SI) |
| kilojoules | kJ | International System of Units (SI) |
| megajoules | MJ | International System of Units (SI) |
| gigajoules | GJ | International System of Units (SI) |
| terajoules | TJ | International System of Units (SI) |
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