An erg is the CGS (centimeter-gram-second) unit of energy, equal to one ten-millionth of a joule.
Ergs to Terajoules
Convert Erg (erg) to Terajoule (TJ) instantly with an exact formula, conversion table, and FAQ.
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Convert ergs (erg) 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 = erg × 1.000000000e-19
Results update instantly for Ergs to Terajoules conversions.
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Formula
TJ = erg × 1.000000000e-19
erg = TJ × 1.000000000e+19
Conversion table
| 1 erg | 1.000000e-19 TJ |
| 5 erg | 5.000000e-19 TJ |
| 10 erg | 1.000000e-18 TJ |
| 20 erg | 2.000000e-18 TJ |
| 50 erg | 5.000000e-18 TJ |
| 100 erg | 1.000000e-17 TJ |
| 500 erg | 5.000000e-17 TJ |
| 1000 erg | 1.000000e-16 TJ |
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How the formula works
Both erg and terajoule measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in ergs by 1.000000000e-19 to get terajoules. To reverse the conversion, multiply a terajoule value by 1.000000000e+19 to get back to ergs.
Frequently asked questions
What is Erg (erg)?
An erg is the CGS (centimeter-gram-second) unit of energy, equal to one ten-millionth of a joule.
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 ergs to terajoules?
Multiply the erg value by 1.000000000e-19 to get the equivalent in terajoules. For example, 5 erg × 1.000000000e-19 = 5.000000e-19 TJ.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 1.000000000e-19 is an exact, non-rounded value.
Can I convert terajoules back to ergs?
Yes. Divide the terajoule value by 1.000000000e-19, or multiply it by 1.000000000e+19, to get ergs.
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About converting ergs to terajoules
An erg is the CGS (centimeter-gram-second) unit of energy, equal to one ten-millionth of a joule. 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 ergs 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.