Convert Megajoules to Therms
1 megajoule (MJ) equals 0.00948043428 therms (thm).
1 MJ = 0.00948043428 thm
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk megajoule to therm converter to paste a column from Excel.
How to Convert Megajoule to Therm
- 1 MJ = 0.00948043428 thm
- 1 thm = 105.4804 MJ
- Example: convert 15 MJ to thm: 15 MJ = 15 × 0.00948043428 thm = 0.1422065142 thm
Reference conditions. thm: US therm, 100 000 BTU (59 °F), 105.4804 MJ as given by NIST SP 811. The EC therm is 105.506 MJ.
Formula
thm = MJ × 0.009480434279733
or thm = MJ ÷ 105.4804
Derivation from SI units:
- 1 MJ = 10⁶ J
- 1 thm (US) = 1.054804 × 10⁸ J (NIST SP 811)
- 1 MJ = 1000000 J ÷ 105480400 J per thm = 0.009480434279733 thm
Both units are defined exactly, so the factor is exact. Megajoule definition: megajoule; Therm definition: therm.
Worked examples
- A reading of 35 MJ converts to 0.3318151998 thm.
35 MJ × 0.00948043428 = 0.3318151998 thm - A value of 50 MJ is 0.474021714 thm.
50 MJ × 0.00948043428 = 0.474021714 thm
Megajoule to Therm conversion table
| Megajoules (MJ) | Therms (thm) |
|---|---|
| 1 MJ | 0.00948043428 thm |
| 3.6 MJ | 0.03412956341 thm |
| 10 MJ | 0.0948043428 thm |
| 35 MJ | 0.3318151998 thm |
| 38 MJ | 0.3602565026 thm |
| 45 MJ | 0.4266195426 thm |
| 50 MJ | 0.474021714 thm |
| 100 MJ | 0.948043428 thm |
| 1000 MJ | 9.48043428 thm |
Where it's used
Megajoules are used for fuel heating values (natural gas ≈ 38 MJ/m³, diesel ≈ 45 MJ/kg), while therms appear in US and UK natural-gas bills. Both measure energy, work and heat, so the conversion is a fixed factor.
Megajoule to other energy units
| Conversion | 1 MJ equals |
|---|---|
| megajoule to joule | 1000000 J |
| megajoule to kilojoule | 1000 kJ |
| megajoule to calorie | 239005.7361 cal |
| megajoule to kilocalorie | 239.0057361 kcal |
| megajoule to watt-hour | 277.7777778 Wh |
| megajoule to kilowatt-hour | 0.2777777778 kWh |
| megajoule to BTU | 947.8171203 BTU |
| megajoule to therm | 0.00948043428 thm |
| megajoule to electronvolt | 6.241509074 × 10²⁴ eV |
| megajoule to foot-pound | 737562.1493 ft·lbf |
| megajoule to erg | 10000000000000 erg |
Frequently asked questions
How many therms are in 1 megajoule?
1 MJ = 0.00948043428 thm.
How do I convert megajoules to therms?
Multiply the value in MJ by 0.00948043428, or divide it by 105.4804. For example, 15 MJ × 0.00948043428 = 0.1422065142 thm.
Is the MJ to thm conversion exact?
Yes. Both units are defined exactly, so the ratio is exact; its decimal form does not terminate and is shown here to 10 significant figures (more with the precision selector).
Sources
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 7, SI prefixes.
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "therm (U.S.)".
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Megajoules to Therms. Retrieved October 17, 2026, from https://scientificconverters.com/energy/megajoules-to-therms/
IEEE
Scientific Converters, "Convert Megajoules to Therms," scientificconverters.com. Accessed: Oct. 17, 2026. [Online]. Available: https://scientificconverters.com/energy/megajoules-to-therms/