| 1 BTU | = 250.93495064812 cal3.98°C |
| 2 BTU | = 501.86990129623 cal3.98°C |
| 3 BTU | = 752.80485194435 cal3.98°C |
| 4 BTU | = 1003.7398025925 cal3.98°C |
| 5 BTU | = 1254.6747532406 cal3.98°C |
| 6 BTU | = 1505.6097038887 cal3.98°C |
| 7 BTU | = 1756.5446545368 cal3.98°C |
| 8 BTU | = 2007.4796051849 cal3.98°C |
| 9 BTU | = 2258.414555833 cal3.98°C |
| 10 BTU | = 2509.3495064812 cal3.98°C |
| 20 BTU | = 5018.6990129623 cal3.98°C |
| 30 BTU | = 7528.0485194435 cal3.98°C |
| 40 BTU | = 10037.398025925 cal3.98°C |
| 50 BTU | = 12546.747532406 cal3.98°C |
| 60 BTU | = 15056.097038887 cal3.98°C |
| 70 BTU | = 17565.446545368 cal3.98°C |
| 80 BTU | = 20074.796051849 cal3.98°C |
| 90 BTU | = 22584.14555833 cal3.98°C |
| 100 BTU | = 25093.495064812 cal3.98°C |
| 200 BTU | = 50186.990129623 cal3.98°C |
| 300 BTU | = 75280.485194435 cal3.98°C |
| 400 BTU | = 100373.98025925 cal3.98°C |
| 500 BTU | = 125467.47532406 cal3.98°C |
| 600 BTU | = 150560.97038887 cal3.98°C |
| 700 BTU | = 175654.46545368 cal3.98°C |
| 800 BTU | = 200747.96051849 cal3.98°C |
| 900 BTU | = 225841.4555833 cal3.98°C |
| 1000 BTU | = 250934.95064812 cal3.98°C |
| 2000 BTU | = 501869.90129623 cal3.98°C |
| 4000 BTU | = 1003739.8025925 cal3.98°C |
| 5000 BTU | = 1254674.7532406 cal3.98°C |
| 7500 BTU | = 1882012.1298609 cal3.98°C |
| 10000 BTU | = 2509349.5064812 cal3.98°C |
| 25000 BTU | = 6273373.7662029 cal3.98°C |
| 50000 BTU | = 12546747.532406 cal3.98°C |
| 100000 BTU | = 25093495.064812 cal3.98°C |
| 1000000 BTU | = 250934950.64812 cal3.98°C |
| 1000000000 BTU | = 250934950648.12 cal3.98°C |