A megajoule (MJ) is a metric-prefixed unit of energy equal to 106 joules, using the SI mega prefix.
Megajoules to Terajoules
Convert Megajoule (MJ) to Terajoule (TJ) instantly with an exact formula, conversion table, and FAQ.
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Convert megajoules (MJ) to terajoules (TJ) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
A terajoule (TJ) is a metric-prefixed unit of energy equal to 1012 joules, using the SI tera prefix.
TJ = MJ × 0.000001
Results update instantly for Megajoules to Terajoules conversions.
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Formula
TJ = MJ × 0.000001
MJ = TJ × 1000000
Conversion table
| 1 MJ | 0.000001 TJ |
| 5 MJ | 0.000005 TJ |
| 10 MJ | 0.000010 TJ |
| 20 MJ | 0.000020 TJ |
| 50 MJ | 0.000050 TJ |
| 100 MJ | 0.000100 TJ |
| 500 MJ | 0.000500 TJ |
| 1000 MJ | 0.001000 TJ |
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How the formula works
Both megajoule and terajoule measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in megajoules by 0.000001 to get terajoules. To reverse the conversion, multiply a terajoule value by 1000000 to get back to megajoules.
Frequently asked questions
What is Megajoule (MJ)?
A megajoule (MJ) is a metric-prefixed unit of energy equal to 106 joules, using the SI mega prefix.
What is Terajoule (TJ)?
A terajoule (TJ) is a metric-prefixed unit of energy equal to 1012 joules, using the SI tera prefix.
How do I convert megajoules to terajoules?
Multiply the megajoule value by 0.000001 to get the equivalent in terajoules. For example, 5 MJ × 0.000001 = 0.000005 TJ.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 0.000001 is an exact, non-rounded value.
Can I convert terajoules back to megajoules?
Yes. Divide the terajoule value by 0.000001, or multiply it by 1000000, to get megajoules.
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About converting megajoules to terajoules
A megajoule (MJ) is a metric-prefixed unit of energy equal to 106 joules, using the SI mega prefix. A terajoule (TJ) is a metric-prefixed unit of energy equal to 1012 joules, using the SI tera prefix.
Use this calculator to move between megajoules and terajoules accurately for homework, engineering, billing, or everyday energy calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.