A attojoule (aJ) is a metric-prefixed unit of energy equal to 10-18 joules, a fraction of a single joule, using the SI atto prefix.
Attojoules to Therms
Convert Attojoule (aJ) to US therm (therm) instantly with an exact formula, conversion table, and FAQ.
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Convert attojoules (aJ) 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 = aJ × 9.480434280e-27
Results update instantly for Attojoules to Therms conversions.
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Formula
therm = aJ × 9.480434280e-27
aJ = therm × 1.054804000e+26
Conversion table
| 1 aJ | 9.480434e-27 therm |
| 5 aJ | 4.740217e-26 therm |
| 10 aJ | 9.480434e-26 therm |
| 20 aJ | 1.896087e-25 therm |
| 50 aJ | 4.740217e-25 therm |
| 100 aJ | 9.480434e-25 therm |
| 500 aJ | 4.740217e-24 therm |
| 1000 aJ | 9.480434e-24 therm |
Related conversions
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How the formula works
Both attojoule and us therm measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in attojoules by 9.480434280e-27 to get therms. To reverse the conversion, multiply a us therm value by 1.054804000e+26 to get back to attojoules.
Frequently asked questions
What is Attojoule (aJ)?
A attojoule (aJ) is a metric-prefixed unit of energy equal to 10-18 joules, a fraction of a single joule, using the SI atto 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 attojoules to therms?
Multiply the attojoule value by 9.480434280e-27 to get the equivalent in therms. For example, 5 aJ × 9.480434280e-27 = 4.740217e-26 therm.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 9.480434280e-27 is an exact, non-rounded value.
Can I convert therms back to attojoules?
Yes. Divide the us therm value by 9.480434280e-27, or multiply it by 1.054804000e+26, to get attojoules.
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About converting attojoules to therms
A attojoule (aJ) is a metric-prefixed unit of energy equal to 10-18 joules, a fraction of a single joule, using the SI atto 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 attojoules 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.