A terajoule (TJ) is a metric-prefixed unit of energy equal to 1012 joules, using the SI tera prefix.
Terajoules to Petajoules
Convert Terajoule (TJ) to Petajoule (PJ) instantly with an exact formula, conversion table, and FAQ.
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Convert terajoules (TJ) to petajoules (PJ) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
A petajoule (PJ) is a metric-prefixed unit of energy equal to 1015 joules, using the SI peta prefix.
PJ = TJ × 0.001
Results update instantly for Terajoules to Petajoules conversions.
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Formula
PJ = TJ × 0.001
TJ = PJ × 1000
Conversion table
| 1 TJ | 0.001000 PJ |
| 5 TJ | 0.005000 PJ |
| 10 TJ | 0.010000 PJ |
| 20 TJ | 0.020000 PJ |
| 50 TJ | 0.050000 PJ |
| 100 TJ | 0.100000 PJ |
| 500 TJ | 0.500000 PJ |
| 1000 TJ | 1 PJ |
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How the formula works
Both terajoule and petajoule measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in terajoules by 0.001 to get petajoules. To reverse the conversion, multiply a petajoule value by 1000 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 Petajoule (PJ)?
A petajoule (PJ) is a metric-prefixed unit of energy equal to 1015 joules, using the SI peta prefix.
How do I convert terajoules to petajoules?
Multiply the terajoule value by 0.001 to get the equivalent in petajoules. For example, 5 TJ × 0.001 = 0.005000 PJ.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 0.001 is an exact, non-rounded value.
Can I convert petajoules back to terajoules?
Yes. Divide the petajoule value by 0.001, or multiply it by 1000, to get terajoules.
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About converting terajoules to petajoules
A terajoule (TJ) is a metric-prefixed unit of energy equal to 1012 joules, using the SI tera prefix. A petajoule (PJ) is a metric-prefixed unit of energy equal to 1015 joules, using the SI peta prefix.
Use this calculator to move between terajoules and petajoules accurately for homework, engineering, billing, or everyday energy calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.