Kilojoule is 1000 joule units.
Kilojoules to Terajoules Converter — kJ to TJ
Convert Kilojoule (kJ) to Terajoule (TJ) using the exact conversion factor (1 kilojoule = 1e-9 terajoule). See the formula, worked examples, and conversion table.
Kilojoules 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 1000 / 1e+12.
Energy uses the joule as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Kilojoules to Terajoules
Kilojoule and Terajoule both measure energy, and the conversion is especially useful for comparing nutrition labels (kilocalories) against scientific energy figures (joules). Specifically: Kilojoule is 1000 joule units, and terajoule is 1000000000000 joule units.
Formula
terajoules = kilojoules × 1e-9
This factor comes from each unit's defined relationship to the category's base unit: 1 kilojoule equals 1000 base units, and 1 terajoule equals 1e+12 base units, so dividing one by the other gives the direct kilojoule-to-terajoule factor of 1e-9.
Simple example
1 kJ × 1e-9 = 1e-9 TJ
1 kilojoule = 1e-9 terajoules.
Real-world example
100 kJ × 1e-9 = 1e-7 TJ
100 kilojoules = 1e-7 terajoules.
Conversion table
| Kilojoule (kJ) | Terajoule (TJ) |
|---|---|
| 1 kJ | 1e-9 TJ |
| 10 kJ | 1e-8 TJ |
| 100 kJ | 1e-7 TJ |
| 500 kJ | 5e-7 TJ |
| 1,000 kJ | 0.000001 TJ |
| 2,000 kJ | 0.000002 TJ |
Reverse conversion: Terajoule to Kilojoule
1e-9 TJ × 1000000000 = 1 kJ
1e-9 terajoules = 1 kilojoules.
kilojoules = terajoules × 1000000000
For a page dedicated to this direction, see Terajoule to Kilojoule.
Understanding the Kilojoule (kJ)
Kilojoule is 1000 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 kilojoule?
1 kilojoule equals 1e-9 terajoules, using the exact defined conversion factor rather than an estimate.
How do I convert kilojoule to terajoule?
Multiply the kilojoule value by 1e-9. The converter above does this instantly to whatever precision you set.
How do I convert terajoule back to kilojoule?
Use the reverse factor: 1 terajoule equals 1,000,000,000 kilojoules. You can also use the swap control in the converter above to flip the direction instantly.
What is a kilojoule?
Kilojoule (kJ) is a unit of energy.
What is a terajoule?
Terajoule (TJ) is a unit of energy.
Is the kilojoule to terajoule conversion exact?
Yes. Both kilojoule and terajoule are defined by fixed standards rather than physical artifacts, so the factor of 1e-9 used above is exact to as many digits as you choose to display.