| 1 BTU63°F | = 252.20115258615 cal20°C |
| 2 BTU63°F | = 504.40230517229 cal20°C |
| 3 BTU63°F | = 756.60345775844 cal20°C |
| 4 BTU63°F | = 1008.8046103446 cal20°C |
| 5 BTU63°F | = 1261.0057629307 cal20°C |
| 6 BTU63°F | = 1513.2069155169 cal20°C |
| 7 BTU63°F | = 1765.408068103 cal20°C |
| 8 BTU63°F | = 2017.6092206892 cal20°C |
| 9 BTU63°F | = 2269.8103732753 cal20°C |
| 10 BTU63°F | = 2522.0115258615 cal20°C |
| 20 BTU63°F | = 5044.0230517229 cal20°C |
| 30 BTU63°F | = 7566.0345775844 cal20°C |
| 40 BTU63°F | = 10088.046103446 cal20°C |
| 50 BTU63°F | = 12610.057629307 cal20°C |
| 60 BTU63°F | = 15132.069155169 cal20°C |
| 70 BTU63°F | = 17654.08068103 cal20°C |
| 80 BTU63°F | = 20176.092206892 cal20°C |
| 90 BTU63°F | = 22698.103732753 cal20°C |
| 100 BTU63°F | = 25220.115258615 cal20°C |
| 200 BTU63°F | = 50440.230517229 cal20°C |
| 300 BTU63°F | = 75660.345775844 cal20°C |
| 400 BTU63°F | = 100880.46103446 cal20°C |
| 500 BTU63°F | = 126100.57629307 cal20°C |
| 600 BTU63°F | = 151320.69155169 cal20°C |
| 700 BTU63°F | = 176540.8068103 cal20°C |
| 800 BTU63°F | = 201760.92206892 cal20°C |
| 900 BTU63°F | = 226981.03732753 cal20°C |
| 1000 BTU63°F | = 252201.15258615 cal20°C |
| 2000 BTU63°F | = 504402.30517229 cal20°C |
| 4000 BTU63°F | = 1008804.6103446 cal20°C |
| 5000 BTU63°F | = 1261005.7629307 cal20°C |
| 7500 BTU63°F | = 1891508.6443961 cal20°C |
| 10000 BTU63°F | = 2522011.5258615 cal20°C |
| 25000 BTU63°F | = 6305028.8146536 cal20°C |
| 50000 BTU63°F | = 12610057.629307 cal20°C |
| 100000 BTU63°F | = 25220115.258615 cal20°C |
| 1000000 BTU63°F | = 252201152.58615 cal20°C |
| 1000000000 BTU63°F | = 252201152586.15 cal20°C |