A terajoule (TJ) is a metric-prefixed unit of energy equal to 1012 joules, using the SI tera prefix.
Terajoules to Quettajoules
Convert Terajoule (TJ) to Quettajoule (QJ) 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 terajoules (TJ) to quettajoules (QJ) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
A quettajoule (QJ) is a metric-prefixed unit of energy equal to 1030 joules, using the SI quetta prefix.
QJ = TJ × 1.000000000e-18
Results update instantly for Terajoules to Quettajoules conversions.
Reserved above the conversion cards and below the converter.
Formula
QJ = TJ × 1.000000000e-18
TJ = QJ × 1.000000000e+18
Conversion table
| 1 TJ | 1.000000e-18 QJ |
| 5 TJ | 5.000000e-18 QJ |
| 10 TJ | 1.000000e-17 QJ |
| 20 TJ | 2.000000e-17 QJ |
| 50 TJ | 5.000000e-17 QJ |
| 100 TJ | 1.000000e-16 QJ |
| 500 TJ | 5.000000e-16 QJ |
| 1000 TJ | 1.000000e-15 QJ |
Related conversions
Reserved between the cards and the FAQ so the page stays balanced.
How the formula works
Both terajoule and quettajoule measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in terajoules by 1.000000000e-18 to get quettajoules. To reverse the conversion, multiply a quettajoule value by 1.000000000e+18 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 Quettajoule (QJ)?
A quettajoule (QJ) is a metric-prefixed unit of energy equal to 1030 joules, using the SI quetta prefix.
How do I convert terajoules to quettajoules?
Multiply the terajoule value by 1.000000000e-18 to get the equivalent in quettajoules. For example, 5 TJ × 1.000000000e-18 = 5.000000e-18 QJ.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 1.000000000e-18 is an exact, non-rounded value.
Can I convert quettajoules back to terajoules?
Yes. Divide the quettajoule value by 1.000000000e-18, or multiply it by 1.000000000e+18, to get terajoules.
Reserved between the FAQ and the article so the page stays balanced.
About converting terajoules to quettajoules
A terajoule (TJ) is a metric-prefixed unit of energy equal to 1012 joules, using the SI tera prefix. A quettajoule (QJ) is a metric-prefixed unit of energy equal to 1030 joules, using the SI quetta prefix.
Use this calculator to move between terajoules and quettajoules accurately for homework, engineering, billing, or everyday energy calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.