Zettajoule is 1e+21 joule units.
Zettajoules to Ronnajoules Converter — ZJ to RJ
Convert Zettajoule (ZJ) to Ronnajoule (RJ) using the exact conversion factor (1 zettajoule = 0.000001 ronnajoule). See the formula, worked examples, and conversion table.
Zettajoules to Ronnajoules 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.
Ronnajoule is 1e+27 joule units.
Result = input x 1e+21 / 1e+27.
Energy uses the joule as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Zettajoules to Ronnajoules
Zettajoule and Ronnajoule 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 ronnajoule is 1e+27 joule units.
Formula
ronnajoules = zettajoules × 0.000001
This factor comes from each unit's defined relationship to the category's base unit: 1 zettajoule equals 1e+21 base units, and 1 ronnajoule equals 1e+27 base units, so dividing one by the other gives the direct zettajoule-to-ronnajoule factor of 0.000001.
Simple example
1 ZJ × 0.000001 = 0.000001 RJ
1 zettajoule = 0.000001 ronnajoules.
Real-world example
100 ZJ × 0.000001 = 0.0001 RJ
100 zettajoules = 0.0001 ronnajoules.
Conversion table
| Zettajoule (ZJ) | Ronnajoule (RJ) |
|---|---|
| 1 ZJ | 0.000001 RJ |
| 10 ZJ | 0.00001 RJ |
| 100 ZJ | 0.0001 RJ |
| 500 ZJ | 0.0005 RJ |
| 1,000 ZJ | 0.001 RJ |
| 2,000 ZJ | 0.002 RJ |
Reverse conversion: Ronnajoule to Zettajoule
0.000001 RJ × 1000000 = 1 ZJ
0.000001 ronnajoules = 1 zettajoule.
zettajoules = ronnajoules × 1000000
For a page dedicated to this direction, see Ronnajoule to Zettajoule.
Understanding the Zettajoule (ZJ)
Zettajoule is 1e+21 joule units.
Understanding the Ronnajoule (RJ)
Ronnajoule is 1e+27 joule units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many ronnajoules are in 1 zettajoule?
1 zettajoule equals 0.000001 ronnajoules, using the exact defined conversion factor rather than an estimate.
How do I convert zettajoule to ronnajoule?
Multiply the zettajoule value by 0.000001. The converter above does this instantly to whatever precision you set.
How do I convert ronnajoule back to zettajoule?
Use the reverse factor: 1 ronnajoule equals 1,000,000 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 ronnajoule?
Ronnajoule (RJ) is a unit of energy.
Is the zettajoule to ronnajoule conversion exact?
Yes. Both zettajoule and ronnajoule are defined by fixed standards rather than physical artifacts, so the factor of 0.000001 used above is exact to as many digits as you choose to display.