| 1 keV | = 1.5191148025942E-19 BTU60°F |
| 2 keV | = 3.0382296051883E-19 BTU60°F |
| 3 keV | = 4.5573444077825E-19 BTU60°F |
| 4 keV | = 6.0764592103766E-19 BTU60°F |
| 5 keV | = 7.5955740129708E-19 BTU60°F |
| 6 keV | = 9.1146888155649E-19 BTU60°F |
| 7 keV | = 1.0633803618159E-18 BTU60°F |
| 8 keV | = 1.2152918420753E-18 BTU60°F |
| 9 keV | = 1.3672033223347E-18 BTU60°F |
| 10 keV | = 1.5191148025942E-18 BTU60°F |
| 20 keV | = 3.0382296051883E-18 BTU60°F |
| 30 keV | = 4.5573444077825E-18 BTU60°F |
| 40 keV | = 6.0764592103766E-18 BTU60°F |
| 50 keV | = 7.5955740129708E-18 BTU60°F |
| 60 keV | = 9.1146888155649E-18 BTU60°F |
| 70 keV | = 1.0633803618159E-17 BTU60°F |
| 80 keV | = 1.2152918420753E-17 BTU60°F |
| 90 keV | = 1.3672033223347E-17 BTU60°F |
| 100 keV | = 1.5191148025942E-17 BTU60°F |
| 200 keV | = 3.0382296051883E-17 BTU60°F |
| 300 keV | = 4.5573444077825E-17 BTU60°F |
| 400 keV | = 6.0764592103766E-17 BTU60°F |
| 500 keV | = 7.5955740129708E-17 BTU60°F |
| 600 keV | = 9.1146888155649E-17 BTU60°F |
| 700 keV | = 1.0633803618159E-16 BTU60°F |
| 800 keV | = 1.2152918420753E-16 BTU60°F |
| 900 keV | = 1.3672033223347E-16 BTU60°F |
| 1000 keV | = 1.5191148025942E-16 BTU60°F |
| 2000 keV | = 3.0382296051883E-16 BTU60°F |
| 4000 keV | = 6.0764592103766E-16 BTU60°F |
| 5000 keV | = 7.5955740129708E-16 BTU60°F |
| 7500 keV | = 1.1393361019456E-15 BTU60°F |
| 10000 keV | = 1.5191148025942E-15 BTU60°F |
| 25000 keV | = 3.7977870064854E-15 BTU60°F |
| 50000 keV | = 7.5955740129708E-15 BTU60°F |
| 100000 keV | = 1.5191148025942E-14 BTU60°F |
| 1000000 keV | = 1.5191148025942E-13 BTU60°F |
| 1000000000 keV | = 1.5191148025942E-10 BTU60°F |