Quectojoule is 1e-30 joule units.
Quectojoules to Terajoules Converter — qJ to TJ
Convert Quectojoule (qJ) to Terajoule (TJ) using the exact conversion factor (1 quectojoule = 1e-42 terajoule). See the formula, worked examples, and conversion table.
Quectojoules to Terajoules converter
Converter
Energy Converter
Convert joules, calories, kilowatt-hours, BTU, electronvolts, therms, and mechanical work units.
Context values
Some unit families need one extra value for a physically accurate result.
Terajoule is 1000000000000 joule units.
Result = input x 1e-30 / 1e+12.
Energy uses the joule as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Quectojoules to Terajoules
Quectojoule and Terajoule both measure energy, and the conversion is especially useful for comparing nutrition labels (kilocalories) against scientific energy figures (joules). Specifically: Quectojoule is 1e-30 joule units, and terajoule is 1000000000000 joule units.
Formula
terajoules = quectojoules × 1e-42
This factor comes from each unit's defined relationship to the category's base unit: 1 quectojoule equals 1e-30 base units, and 1 terajoule equals 1e+12 base units, so dividing one by the other gives the direct quectojoule-to-terajoule factor of 1e-42.
Simple example
1 qJ × 1e-42 = 1e-42 TJ
1 quectojoule = 1e-42 terajoules.
Real-world example
100 qJ × 1e-42 = 1e-40 TJ
100 quectojoules = 1e-40 terajoules.
Conversion table
| Quectojoule (qJ) | Terajoule (TJ) |
|---|---|
| 1 qJ | 1e-42 TJ |
| 10 qJ | 1e-41 TJ |
| 100 qJ | 1e-40 TJ |
| 500 qJ | 5e-40 TJ |
| 1,000 qJ | 1e-39 TJ |
| 2,000 qJ | 2e-39 TJ |
Reverse conversion: Terajoule to Quectojoule
1e-42 TJ × 1e+42 = 1 qJ
1e-42 terajoules = 1 quectojoule.
quectojoules = terajoules × 1e+42
For a page dedicated to this direction, see Terajoule to Quectojoule.
Understanding the Quectojoule (qJ)
Quectojoule is 1e-30 joule units.
Understanding the Terajoule (TJ)
Terajoule is 1000000000000 joule units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many terajoules are in 1 quectojoule?
1 quectojoule equals 1e-42 terajoules, using the exact defined conversion factor rather than an estimate.
How do I convert quectojoule to terajoule?
Multiply the quectojoule value by 1e-42. The converter above does this instantly to whatever precision you set.
How do I convert terajoule back to quectojoule?
Use the reverse factor: 1 terajoule equals 1e+42 quectojoules. You can also use the swap control in the converter above to flip the direction instantly.
What is a quectojoule?
Quectojoule (qJ) is a unit of energy.
What is a terajoule?
Terajoule (TJ) is a unit of energy.
Is the quectojoule to terajoule conversion exact?
Yes. Both quectojoule and terajoule are defined by fixed standards rather than physical artifacts, so the factor of 1e-42 used above is exact to as many digits as you choose to display.