A terajoule (TJ) is a metric-prefixed unit of energy equal to 1012 joules, using the SI tera prefix.
Terajoules to Kilojoules
Convert Terajoule (TJ) to Kilojoule (kJ) instantly with an exact formula, conversion table, and FAQ.
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Convert terajoules (TJ) to kilojoules (kJ) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
A kilojoule (kJ) equals 1,000 joules and is commonly used on nutrition labels outside the United States.
kJ = TJ × 1000000000
Results update instantly for Terajoules to Kilojoules conversions.
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Formula
kJ = TJ × 1000000000
TJ = kJ × 1.000000000e-09
Conversion table
| 1 TJ | 1.000000e+09 kJ |
| 5 TJ | 5.000000e+09 kJ |
| 10 TJ | 1.000000e+10 kJ |
| 20 TJ | 2.000000e+10 kJ |
| 50 TJ | 5.000000e+10 kJ |
| 100 TJ | 1.000000e+11 kJ |
| 500 TJ | 5.000000e+11 kJ |
| 1000 TJ | 1.000000e+12 kJ |
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How the formula works
Both terajoule and kilojoule measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in terajoules by 1000000000 to get kilojoules. To reverse the conversion, multiply a kilojoule value by 1.000000000e-09 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 Kilojoule (kJ)?
A kilojoule (kJ) equals 1,000 joules and is commonly used on nutrition labels outside the United States.
How do I convert terajoules to kilojoules?
Multiply the terajoule value by 1000000000 to get the equivalent in kilojoules. For example, 5 TJ × 1000000000 = 5.000000e+09 kJ.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 1000000000 is an exact, non-rounded value.
Can I convert kilojoules back to terajoules?
Yes. Divide the kilojoule value by 1000000000, or multiply it by 1.000000000e-09, to get terajoules.
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About converting terajoules to kilojoules
A terajoule (TJ) is a metric-prefixed unit of energy equal to 1012 joules, using the SI tera prefix. A kilojoule (kJ) equals 1,000 joules and is commonly used on nutrition labels outside the United States.
Use this calculator to move between terajoules and kilojoules accurately for homework, engineering, billing, or everyday energy calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.