L'énergie est la capacité d'effectuer un travail.Il existe sous diverses formes, telles que cinétique, potentiel, thermique, etc. Il est mesuré en joules (J).
1 MJ/s = 0.009 thm 
1 thm = 105.5 MJ/s 
Exemple: 
Convertir 15 Megajoule par seconde en Thermie:
15 MJ/s = 0.142 thm 
| Megajoule par seconde | Thermie | 
|---|---|
| 0.01 MJ/s | 9.4787e-5 thm | 
| 0.1 MJ/s | 0.001 thm | 
| 1 MJ/s | 0.009 thm | 
| 2 MJ/s | 0.019 thm | 
| 3 MJ/s | 0.028 thm | 
| 5 MJ/s | 0.047 thm | 
| 10 MJ/s | 0.095 thm | 
| 20 MJ/s | 0.19 thm | 
| 30 MJ/s | 0.284 thm | 
| 40 MJ/s | 0.379 thm | 
| 50 MJ/s | 0.474 thm | 
| 60 MJ/s | 0.569 thm | 
| 70 MJ/s | 0.664 thm | 
| 80 MJ/s | 0.758 thm | 
| 90 MJ/s | 0.853 thm | 
| 100 MJ/s | 0.948 thm | 
| 250 MJ/s | 2.37 thm | 
| 500 MJ/s | 4.739 thm | 
| 750 MJ/s | 7.109 thm | 
| 1000 MJ/s | 9.479 thm | 
| 10000 MJ/s | 94.787 thm | 
| 100000 MJ/s | 947.867 thm |