| 1 BTU63°F | = 251.98423127464 cal15°C |
| 2 BTU63°F | = 503.96846254928 cal15°C |
| 3 BTU63°F | = 755.95269382392 cal15°C |
| 4 BTU63°F | = 1007.9369250986 cal15°C |
| 5 BTU63°F | = 1259.9211563732 cal15°C |
| 6 BTU63°F | = 1511.9053876478 cal15°C |
| 7 BTU63°F | = 1763.8896189225 cal15°C |
| 8 BTU63°F | = 2015.8738501971 cal15°C |
| 9 BTU63°F | = 2267.8580814717 cal15°C |
| 10 BTU63°F | = 2519.8423127464 cal15°C |
| 20 BTU63°F | = 5039.6846254928 cal15°C |
| 30 BTU63°F | = 7559.5269382392 cal15°C |
| 40 BTU63°F | = 10079.369250986 cal15°C |
| 50 BTU63°F | = 12599.211563732 cal15°C |
| 60 BTU63°F | = 15119.053876478 cal15°C |
| 70 BTU63°F | = 17638.896189225 cal15°C |
| 80 BTU63°F | = 20158.738501971 cal15°C |
| 90 BTU63°F | = 22678.580814717 cal15°C |
| 100 BTU63°F | = 25198.423127464 cal15°C |
| 200 BTU63°F | = 50396.846254928 cal15°C |
| 300 BTU63°F | = 75595.269382392 cal15°C |
| 400 BTU63°F | = 100793.69250986 cal15°C |
| 500 BTU63°F | = 125992.11563732 cal15°C |
| 600 BTU63°F | = 151190.53876478 cal15°C |
| 700 BTU63°F | = 176388.96189225 cal15°C |
| 800 BTU63°F | = 201587.38501971 cal15°C |
| 900 BTU63°F | = 226785.80814717 cal15°C |
| 1000 BTU63°F | = 251984.23127464 cal15°C |
| 2000 BTU63°F | = 503968.46254928 cal15°C |
| 4000 BTU63°F | = 1007936.9250986 cal15°C |
| 5000 BTU63°F | = 1259921.1563732 cal15°C |
| 7500 BTU63°F | = 1889881.7345598 cal15°C |
| 10000 BTU63°F | = 2519842.3127464 cal15°C |
| 25000 BTU63°F | = 6299605.781866 cal15°C |
| 50000 BTU63°F | = 12599211.563732 cal15°C |
| 100000 BTU63°F | = 25198423.127464 cal15°C |
| 1000000 BTU63°F | = 251984231.27464 cal15°C |
| 1000000000 BTU63°F | = 251984231274.64 cal15°C |