| 1 BTUth | = 6.5807229177745E+18 keV |
| 2 BTUth | = 1.3161445835549E+19 keV |
| 3 BTUth | = 1.9742168753324E+19 keV |
| 4 BTUth | = 2.6322891671098E+19 keV |
| 5 BTUth | = 3.2903614588873E+19 keV |
| 6 BTUth | = 3.9484337506647E+19 keV |
| 7 BTUth | = 4.6065060424422E+19 keV |
| 8 BTUth | = 5.2645783342196E+19 keV |
| 9 BTUth | = 5.9226506259971E+19 keV |
| 10 BTUth | = 6.5807229177745E+19 keV |
| 20 BTUth | = 1.3161445835549E+20 keV |
| 30 BTUth | = 1.9742168753324E+20 keV |
| 40 BTUth | = 2.6322891671098E+20 keV |
| 50 BTUth | = 3.2903614588873E+20 keV |
| 60 BTUth | = 3.9484337506647E+20 keV |
| 70 BTUth | = 4.6065060424422E+20 keV |
| 80 BTUth | = 5.2645783342196E+20 keV |
| 90 BTUth | = 5.9226506259971E+20 keV |
| 100 BTUth | = 6.5807229177745E+20 keV |
| 200 BTUth | = 1.3161445835549E+21 keV |
| 300 BTUth | = 1.9742168753324E+21 keV |
| 400 BTUth | = 2.6322891671098E+21 keV |
| 500 BTUth | = 3.2903614588873E+21 keV |
| 600 BTUth | = 3.9484337506647E+21 keV |
| 700 BTUth | = 4.6065060424422E+21 keV |
| 800 BTUth | = 5.2645783342196E+21 keV |
| 900 BTUth | = 5.9226506259971E+21 keV |
| 1000 BTUth | = 6.5807229177745E+21 keV |
| 2000 BTUth | = 1.3161445835549E+22 keV |
| 4000 BTUth | = 2.6322891671098E+22 keV |
| 5000 BTUth | = 3.2903614588873E+22 keV |
| 7500 BTUth | = 4.9355421883309E+22 keV |
| 10000 BTUth | = 6.5807229177745E+22 keV |
| 25000 BTUth | = 1.6451807294436E+23 keV |
| 50000 BTUth | = 3.2903614588873E+23 keV |
| 100000 BTUth | = 6.5807229177745E+23 keV |
| 1000000 BTUth | = 6.5807229177745E+24 keV |
| 1000000000 BTUth | = 6.5807229177745E+27 keV |