The US therm is a natural-gas billing unit equal to 100,000 BTU, used by utilities to measure gas usage.
Therms to Millijoules
Convert US therm (therm) to Millijoule (mJ) instantly with an exact formula, conversion table, and FAQ.
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Convert therms (therm) to millijoules (mJ) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
A millijoule (mJ) is a metric-prefixed unit of energy equal to 10-3 joules, a fraction of a single joule, using the SI milli prefix.
mJ = therm × 105480400000
Results update instantly for Therms to Millijoules conversions.
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Formula
mJ = therm × 105480400000
therm = mJ × 9.480434280e-12
Conversion table
| 1 therm | 1.054804e+11 mJ |
| 5 therm | 5.274020e+11 mJ |
| 10 therm | 1.054804e+12 mJ |
| 20 therm | 2.109608e+12 mJ |
| 50 therm | 5.274020e+12 mJ |
| 100 therm | 1.054804e+13 mJ |
| 500 therm | 5.274020e+13 mJ |
| 1000 therm | 1.054804e+14 mJ |
Related conversions
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How the formula works
Both us therm and millijoule measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in therms by 105480400000 to get millijoules. To reverse the conversion, multiply a millijoule value by 9.480434280e-12 to get back to therms.
Frequently asked questions
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.
What is Millijoule (mJ)?
A millijoule (mJ) is a metric-prefixed unit of energy equal to 10-3 joules, a fraction of a single joule, using the SI milli prefix.
How do I convert therms to millijoules?
Multiply the us therm value by 105480400000 to get the equivalent in millijoules. For example, 5 therm × 105480400000 = 5.274020e+11 mJ.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 105480400000 is an exact, non-rounded value.
Can I convert millijoules back to therms?
Yes. Divide the millijoule value by 105480400000, or multiply it by 9.480434280e-12, to get therms.
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About converting therms to millijoules
The US therm is a natural-gas billing unit equal to 100,000 BTU, used by utilities to measure gas usage. A millijoule (mJ) is a metric-prefixed unit of energy equal to 10-3 joules, a fraction of a single joule, using the SI milli prefix.
Use this calculator to move between therms and millijoules accurately for homework, engineering, billing, or everyday energy calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.