A ronnajoule (RJ) is a metric-prefixed unit of energy equal to 1027 joules, using the SI ronna prefix.
Ronnajoules to Therms
Convert Ronnajoule (RJ) to US therm (therm) instantly with an exact formula, conversion table, and FAQ.
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Convert ronnajoules (RJ) to therms (therm) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
The US therm is a natural-gas billing unit equal to 100,000 BTU, used by utilities to measure gas usage.
therm = RJ × 9.480434280e+18
Results update instantly for Ronnajoules to Therms conversions.
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Formula
therm = RJ × 9.480434280e+18
RJ = therm × 1.054804000e-19
Conversion table
| 1 RJ | 9.480434e+18 therm |
| 5 RJ | 4.740217e+19 therm |
| 10 RJ | 9.480434e+19 therm |
| 20 RJ | 1.896087e+20 therm |
| 50 RJ | 4.740217e+20 therm |
| 100 RJ | 9.480434e+20 therm |
| 500 RJ | 4.740217e+21 therm |
| 1000 RJ | 9.480434e+21 therm |
Related conversions
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How the formula works
Both ronnajoule and us therm measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in ronnajoules by 9.480434280e+18 to get therms. To reverse the conversion, multiply a us therm value by 1.054804000e-19 to get back to ronnajoules.
Frequently asked questions
What is Ronnajoule (RJ)?
A ronnajoule (RJ) is a metric-prefixed unit of energy equal to 1027 joules, using the SI ronna prefix.
What is US therm (therm)?
The US therm is a natural-gas billing unit equal to 100,000 BTU, used by utilities to measure gas usage.
How do I convert ronnajoules to therms?
Multiply the ronnajoule value by 9.480434280e+18 to get the equivalent in therms. For example, 5 RJ × 9.480434280e+18 = 4.740217e+19 therm.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 9.480434280e+18 is an exact, non-rounded value.
Can I convert therms back to ronnajoules?
Yes. Divide the us therm value by 9.480434280e+18, or multiply it by 1.054804000e-19, to get ronnajoules.
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About converting ronnajoules to therms
A ronnajoule (RJ) is a metric-prefixed unit of energy equal to 1027 joules, using the SI ronna prefix. The US therm is a natural-gas billing unit equal to 100,000 BTU, used by utilities to measure gas usage.
Use this calculator to move between ronnajoules and therms accurately for homework, engineering, billing, or everyday energy calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.