| 1 BTU = 252.164 cal |
| 2 BTU = 504.329 cal |
| 3 BTU = 756.493 cal |
| 4 BTU = 1008.658 cal |
| 5 BTU = 1260.822 cal |
| 6 BTU = 1512.986 cal |
| 7 BTU = 1765.151 cal |
| 8 BTU = 2017.315 cal |
| 9 BTU = 2269.480 cal |
| 10 BTU = 2521.644 cal |
| 15 BTU = 3782.466 cal |
| 50 BTU = 12608.220 cal |
| 100 BTU = 25216.440 cal |
| 500 BTU = 126082.200 cal |
| 1000 BTU = 252164.400 cal |
| 5000 BTU = 1260822.000478 cal |
| 10000 BTU = 2521644.000956 cal |