The joule (J) is the SI derived unit of energy, equal to the work done when a force of one newton acts over one meter.
Joules to Terajoules
Convert Joule (J) to Terajoule (TJ) instantly with an exact formula, conversion table, and FAQ.
Reserved for a responsive leaderboard above the conversion details.
Professional calculator style
World-scale conversion engine
30+ categories
6,500+ units
Instant results
Offline ready
Energy calculator
Energy Converter
Convert joules (J) 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 = J × 1.000000000e-12
Results update instantly for Joules to Terajoules conversions.
Reserved above the conversion cards and below the converter.
Formula
TJ = J × 1.000000000e-12
J = TJ × 1000000000000
Conversion table
| 1 J | 1.000000e-12 TJ |
| 5 J | 5.000000e-12 TJ |
| 10 J | 1.000000e-11 TJ |
| 20 J | 2.000000e-11 TJ |
| 50 J | 5.000000e-11 TJ |
| 100 J | 1.000000e-10 TJ |
| 500 J | 5.000000e-10 TJ |
| 1000 J | 1.000000e-09 TJ |
Related conversions
Reserved between the cards and the FAQ so the page stays balanced.
How the formula works
Both joule and terajoule measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in joules by 1.000000000e-12 to get terajoules. To reverse the conversion, multiply a terajoule value by 1000000000000 to get back to joules.
Frequently asked questions
What is Joule (J)?
The joule (J) is the SI derived unit of energy, equal to the work done when a force of one newton acts over one meter.
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 joules to terajoules?
Multiply the joule value by 1.000000000e-12 to get the equivalent in terajoules. For example, 5 J × 1.000000000e-12 = 5.000000e-12 TJ.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 1.000000000e-12 is an exact, non-rounded value.
Can I convert terajoules back to joules?
Yes. Divide the terajoule value by 1.000000000e-12, or multiply it by 1000000000000, to get joules.
Reserved between the FAQ and the article so the page stays balanced.
About converting joules to terajoules
The joule (J) is the SI derived unit of energy, equal to the work done when a force of one newton acts over one meter. 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 joules 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.