| 1 cal20°C | = 0.0039464172808516 BTU39°F |
| 2 cal20°C | = 0.0078928345617032 BTU39°F |
| 3 cal20°C | = 0.011839251842555 BTU39°F |
| 4 cal20°C | = 0.015785669123406 BTU39°F |
| 5 cal20°C | = 0.019732086404258 BTU39°F |
| 6 cal20°C | = 0.02367850368511 BTU39°F |
| 7 cal20°C | = 0.027624920965961 BTU39°F |
| 8 cal20°C | = 0.031571338246813 BTU39°F |
| 9 cal20°C | = 0.035517755527664 BTU39°F |
| 10 cal20°C | = 0.039464172808516 BTU39°F |
| 20 cal20°C | = 0.078928345617032 BTU39°F |
| 30 cal20°C | = 0.11839251842555 BTU39°F |
| 40 cal20°C | = 0.15785669123406 BTU39°F |
| 50 cal20°C | = 0.19732086404258 BTU39°F |
| 60 cal20°C | = 0.2367850368511 BTU39°F |
| 70 cal20°C | = 0.27624920965961 BTU39°F |
| 80 cal20°C | = 0.31571338246813 BTU39°F |
| 90 cal20°C | = 0.35517755527664 BTU39°F |
| 100 cal20°C | = 0.39464172808516 BTU39°F |
| 200 cal20°C | = 0.78928345617032 BTU39°F |
| 300 cal20°C | = 1.1839251842555 BTU39°F |
| 400 cal20°C | = 1.5785669123406 BTU39°F |
| 500 cal20°C | = 1.9732086404258 BTU39°F |
| 600 cal20°C | = 2.367850368511 BTU39°F |
| 700 cal20°C | = 2.7624920965961 BTU39°F |
| 800 cal20°C | = 3.1571338246813 BTU39°F |
| 900 cal20°C | = 3.5517755527664 BTU39°F |
| 1000 cal20°C | = 3.9464172808516 BTU39°F |
| 2000 cal20°C | = 7.8928345617032 BTU39°F |
| 4000 cal20°C | = 15.785669123406 BTU39°F |
| 5000 cal20°C | = 19.732086404258 BTU39°F |
| 7500 cal20°C | = 29.598129606387 BTU39°F |
| 10000 cal20°C | = 39.464172808516 BTU39°F |
| 25000 cal20°C | = 98.66043202129 BTU39°F |
| 50000 cal20°C | = 197.32086404258 BTU39°F |
| 100000 cal20°C | = 394.64172808516 BTU39°F |
| 1000000 cal20°C | = 3946.4172808516 BTU39°F |
| 1000000000 cal20°C | = 3946417.2808516 BTU39°F |