| British thermal unit (thermochemical) | Calories (International Table) |
|---|---|
| 1 BTUth | 251.8271711092 calIT |
| 2 BTUth | 503.6543422184 calIT |
| 3 BTUth | 755.4815133276 calIT |
| 4 BTUth | 1007.3086844368 calIT |
| 5 BTUth | 1259.135855546 calIT |
| 6 BTUth | 1510.9630266552 calIT |
| 7 BTUth | 1762.7901977644 calIT |
| 8 BTUth | 2014.6173688736 calIT |
| 9 BTUth | 2266.4445399828 calIT |
| 10 BTUth | 2518.271711092 calIT |
| British thermal unit (thermochemical) | Calories (International Table) |
|---|---|
| 15 BTUth | 3777.407566638 calIT |
| 20 BTUth | 5036.543422184 calIT |
| 30 BTUth | 7554.815133276 calIT |
| 40 BTUth | 10073.086844368 calIT |
| 50 BTUth | 12591.35855546 calIT |
| 60 BTUth | 15109.630266552 calIT |
| 70 BTUth | 17627.901977644 calIT |
| 80 BTUth | 20146.173688736 calIT |
| 90 BTUth | 22664.445399828 calIT |
| 100 BTUth | 25182.71711092 calIT |
| British thermal unit (thermochemical) | Calories (International Table) |
|---|---|
| 500 BTUth | 125913.5855546 calIT |
| 1000 BTUth | 251827.1711092 calIT |
| 1500 BTUth | 377740.7566638 calIT |
| 10000 BTUth | 2518271.711092 calIT |
| 50000 BTUth | 12591358.55546 calIT |
| 100000 BTUth | 25182717.11092 calIT |
| 500000 BTUth | 125913585.5546 calIT |
| 1000000 BTUth | 251827171.1092 calIT |
| 5000000 BTUth | 1259135855.546 calIT |
| 10000000 BTUth | 2518271711.092 calIT |