Zettajoule is 1e+21 joule units.
Zettajoules to Terajoules Converter — ZJ to TJ
Convert Zettajoule (ZJ) to Terajoule (TJ) using the exact conversion factor (1 zettajoule = 1,000,000,000 terajoule). See the formula, worked examples, and conversion table.
Zettajoules 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+21 / 1e+12.
Energy uses the joule as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Zettajoules to Terajoules
Zettajoule and Terajoule both measure energy, and the conversion is especially useful for comparing nutrition labels (kilocalories) against scientific energy figures (joules). Specifically: Zettajoule is 1e+21 joule units, and terajoule is 1000000000000 joule units.
Formula
terajoules = zettajoules × 1000000000
This factor comes from each unit's defined relationship to the category's base unit: 1 zettajoule equals 1e+21 base units, and 1 terajoule equals 1e+12 base units, so dividing one by the other gives the direct zettajoule-to-terajoule factor of 1000000000.
Simple example
1 ZJ × 1000000000 = 1,000,000,000 TJ
1 zettajoule = 1,000,000,000 terajoules.
Real-world example
100 ZJ × 1000000000 = 100,000,000,000 TJ
100 zettajoules = 100,000,000,000 terajoules.
Conversion table
| Zettajoule (ZJ) | Terajoule (TJ) |
|---|---|
| 1 ZJ | 1,000,000,000 TJ |
| 10 ZJ | 10,000,000,000 TJ |
| 100 ZJ | 100,000,000,000 TJ |
| 500 ZJ | 500,000,000,000 TJ |
| 1,000 ZJ | 1e+12 TJ |
| 2,000 ZJ | 2e+12 TJ |
Reverse conversion: Terajoule to Zettajoule
1 TJ × 1e-9 = 1e-9 ZJ
1 terajoule = 1e-9 zettajoules.
zettajoules = terajoules × 1e-9
For a page dedicated to this direction, see Terajoule to Zettajoule.
Understanding the Zettajoule (ZJ)
Zettajoule is 1e+21 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 zettajoule?
1 zettajoule equals 1,000,000,000 terajoules, using the exact defined conversion factor rather than an estimate.
How do I convert zettajoule to terajoule?
Multiply the zettajoule value by 1000000000. The converter above does this instantly to whatever precision you set.
How do I convert terajoule back to zettajoule?
Use the reverse factor: 1 terajoule equals 1e-9 zettajoules. You can also use the swap control in the converter above to flip the direction instantly.
What is a zettajoule?
Zettajoule (ZJ) is a unit of energy.
What is a terajoule?
Terajoule (TJ) is a unit of energy.
Is the zettajoule to terajoule conversion exact?
Yes. Both zettajoule and terajoule are defined by fixed standards rather than physical artifacts, so the factor of 1000000000 used above is exact to as many digits as you choose to display.