A terajoule (TJ) is a metric-prefixed unit of energy equal to 1012 joules, using the SI tera prefix.
Terajoules to Megajoules
Convert Terajoule (TJ) to Megajoule (MJ) instantly with an exact formula, conversion table, and FAQ.
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Convert terajoules (TJ) to megajoules (MJ) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
A megajoule (MJ) is a metric-prefixed unit of energy equal to 106 joules, using the SI mega prefix.
MJ = TJ × 1000000
Results update instantly for Terajoules to Megajoules conversions.
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Formula
MJ = TJ × 1000000
TJ = MJ × 0.000001
Conversion table
| 1 TJ | 1.000000e+06 MJ |
| 5 TJ | 5.000000e+06 MJ |
| 10 TJ | 1.000000e+07 MJ |
| 20 TJ | 2.000000e+07 MJ |
| 50 TJ | 5.000000e+07 MJ |
| 100 TJ | 1.000000e+08 MJ |
| 500 TJ | 5.000000e+08 MJ |
| 1000 TJ | 1.000000e+09 MJ |
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How the formula works
Both terajoule and megajoule measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in terajoules by 1000000 to get megajoules. To reverse the conversion, multiply a megajoule value by 0.000001 to get back to terajoules.
Frequently asked questions
What is Terajoule (TJ)?
A terajoule (TJ) is a metric-prefixed unit of energy equal to 1012 joules, using the SI tera prefix.
What is Megajoule (MJ)?
A megajoule (MJ) is a metric-prefixed unit of energy equal to 106 joules, using the SI mega prefix.
How do I convert terajoules to megajoules?
Multiply the terajoule value by 1000000 to get the equivalent in megajoules. For example, 5 TJ × 1000000 = 5.000000e+06 MJ.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 1000000 is an exact, non-rounded value.
Can I convert megajoules back to terajoules?
Yes. Divide the megajoule value by 1000000, or multiply it by 0.000001, to get terajoules.
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About converting terajoules to megajoules
A terajoule (TJ) is a metric-prefixed unit of energy equal to 1012 joules, using the SI tera prefix. A megajoule (MJ) is a metric-prefixed unit of energy equal to 106 joules, using the SI mega prefix.
Use this calculator to move between terajoules and megajoules accurately for homework, engineering, billing, or everyday energy calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.