Quettajoule is 1e+30 joule units.
Quettajoules to Zettajoules Converter — QJ to ZJ
Convert Quettajoule (QJ) to Zettajoule (ZJ) using the exact conversion factor (1 quettajoule = 1,000,000,000 zettajoule). See the formula, worked examples, and conversion table.
Quettajoules to Zettajoules 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.
Zettajoule is 1e+21 joule units.
Result = input x 1e+30 / 1e+21.
Energy uses the joule as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Quettajoules to Zettajoules
Quettajoule and Zettajoule both measure energy, and the conversion is especially useful for comparing nutrition labels (kilocalories) against scientific energy figures (joules). Specifically: Quettajoule is 1e+30 joule units, and zettajoule is 1e+21 joule units.
Formula
zettajoules = quettajoules × 1000000000
This factor comes from each unit's defined relationship to the category's base unit: 1 quettajoule equals 1e+30 base units, and 1 zettajoule equals 1e+21 base units, so dividing one by the other gives the direct quettajoule-to-zettajoule factor of 1000000000.
Simple example
1 QJ × 1000000000 = 1,000,000,000 ZJ
1 quettajoule = 1,000,000,000 zettajoules.
Real-world example
100 QJ × 1000000000 = 100,000,000,000 ZJ
100 quettajoules = 100,000,000,000 zettajoules.
Conversion table
| Quettajoule (QJ) | Zettajoule (ZJ) |
|---|---|
| 1 QJ | 1,000,000,000 ZJ |
| 10 QJ | 10,000,000,000 ZJ |
| 100 QJ | 100,000,000,000 ZJ |
| 500 QJ | 500,000,000,000 ZJ |
| 1,000 QJ | 1e+12 ZJ |
| 2,000 QJ | 2e+12 ZJ |
Reverse conversion: Zettajoule to Quettajoule
1 ZJ × 1e-9 = 1e-9 QJ
1 zettajoule = 1e-9 quettajoules.
quettajoules = zettajoules × 1e-9
For a page dedicated to this direction, see Zettajoule to Quettajoule.
Understanding the Quettajoule (QJ)
Quettajoule is 1e+30 joule units.
Understanding the Zettajoule (ZJ)
Zettajoule is 1e+21 joule units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many zettajoules are in 1 quettajoule?
1 quettajoule equals 1,000,000,000 zettajoules, using the exact defined conversion factor rather than an estimate.
How do I convert quettajoule to zettajoule?
Multiply the quettajoule value by 1000000000. The converter above does this instantly to whatever precision you set.
How do I convert zettajoule back to quettajoule?
Use the reverse factor: 1 zettajoule equals 1e-9 quettajoules. You can also use the swap control in the converter above to flip the direction instantly.
What is a quettajoule?
Quettajoule (QJ) is a unit of energy.
What is a zettajoule?
Zettajoule (ZJ) is a unit of energy.
Is the quettajoule to zettajoule conversion exact?
Yes. Both quettajoule and zettajoule 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.