Terajoule is 1000000000000 joule units.
Terajoules to Petajoules Converter — TJ to PJ
Convert Terajoule (TJ) to Petajoule (PJ) using the exact conversion factor (1 terajoule = 0.001 petajoule). See the formula, worked examples, and conversion table.
Terajoules to Petajoules 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.
Petajoule is 1000000000000000 joule units.
Result = input x 1e+12 / 1e+15.
Energy uses the joule as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Terajoules to Petajoules
Terajoule and Petajoule both measure energy, and the conversion is especially useful for comparing nutrition labels (kilocalories) against scientific energy figures (joules). Specifically: Terajoule is 1000000000000 joule units, and petajoule is 1000000000000000 joule units.
Formula
petajoules = terajoules × 0.001
This factor comes from each unit's defined relationship to the category's base unit: 1 terajoule equals 1e+12 base units, and 1 petajoule equals 1e+15 base units, so dividing one by the other gives the direct terajoule-to-petajoule factor of 0.001.
Simple example
1 TJ × 0.001 = 0.001 PJ
1 terajoule = 0.001 petajoules.
Real-world example
100 TJ × 0.001 = 0.1 PJ
100 terajoules = 0.1 petajoules.
Conversion table
| Terajoule (TJ) | Petajoule (PJ) |
|---|---|
| 1 TJ | 0.001 PJ |
| 10 TJ | 0.01 PJ |
| 100 TJ | 0.1 PJ |
| 500 TJ | 0.5 PJ |
| 1,000 TJ | 1 PJ |
| 2,000 TJ | 2 PJ |
Reverse conversion: Petajoule to Terajoule
0.001 PJ × 1000 = 1 TJ
0.001 petajoules = 1 terajoule.
terajoules = petajoules × 1000
For a page dedicated to this direction, see Petajoule to Terajoule.
Understanding the Terajoule (TJ)
Terajoule is 1000000000000 joule units.
Understanding the Petajoule (PJ)
Petajoule is 1000000000000000 joule units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many petajoules are in 1 terajoule?
1 terajoule equals 0.001 petajoules, using the exact defined conversion factor rather than an estimate.
How do I convert terajoule to petajoule?
Multiply the terajoule value by 0.001. The converter above does this instantly to whatever precision you set.
How do I convert petajoule back to terajoule?
Use the reverse factor: 1 petajoule equals 1,000 terajoules. You can also use the swap control in the converter above to flip the direction instantly.
What is a terajoule?
Terajoule (TJ) is a unit of energy.
What is a petajoule?
Petajoule (PJ) is a unit of energy.
Is the terajoule to petajoule conversion exact?
Yes. Both terajoule and petajoule are defined by fixed standards rather than physical artifacts, so the factor of 0.001 used above is exact to as many digits as you choose to display.