A petajoule (PJ) is a metric-prefixed unit of energy equal to 1015 joules, using the SI peta prefix.
Petajoules to Ronnajoules
Convert Petajoule (PJ) to Ronnajoule (RJ) instantly with an exact formula, conversion table, and FAQ.
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Convert petajoules (PJ) to ronnajoules (RJ) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
A ronnajoule (RJ) is a metric-prefixed unit of energy equal to 1027 joules, using the SI ronna prefix.
RJ = PJ × 1.000000000e-12
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Formula
RJ = PJ × 1.000000000e-12
PJ = RJ × 1000000000000
Conversion table
| 1 PJ | 1.000000e-12 RJ |
| 5 PJ | 5.000000e-12 RJ |
| 10 PJ | 1.000000e-11 RJ |
| 20 PJ | 2.000000e-11 RJ |
| 50 PJ | 5.000000e-11 RJ |
| 100 PJ | 1.000000e-10 RJ |
| 500 PJ | 5.000000e-10 RJ |
| 1000 PJ | 1.000000e-09 RJ |
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How the formula works
Both petajoule and ronnajoule measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in petajoules by 1.000000000e-12 to get ronnajoules. To reverse the conversion, multiply a ronnajoule value by 1000000000000 to get back to petajoules.
Frequently asked questions
What is Petajoule (PJ)?
A petajoule (PJ) is a metric-prefixed unit of energy equal to 1015 joules, using the SI peta prefix.
What is Ronnajoule (RJ)?
A ronnajoule (RJ) is a metric-prefixed unit of energy equal to 1027 joules, using the SI ronna prefix.
How do I convert petajoules to ronnajoules?
Multiply the petajoule value by 1.000000000e-12 to get the equivalent in ronnajoules. For example, 5 PJ × 1.000000000e-12 = 5.000000e-12 RJ.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 1.000000000e-12 is an exact, non-rounded value.
Can I convert ronnajoules back to petajoules?
Yes. Divide the ronnajoule value by 1.000000000e-12, or multiply it by 1000000000000, to get petajoules.
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About converting petajoules to ronnajoules
A petajoule (PJ) is a metric-prefixed unit of energy equal to 1015 joules, using the SI peta prefix. A ronnajoule (RJ) is a metric-prefixed unit of energy equal to 1027 joules, using the SI ronna prefix.
Use this calculator to move between petajoules and ronnajoules accurately for homework, engineering, billing, or everyday energy calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.