1 British thermal unit (BTU) = 252.1644007 calories (cal). To convert, multiply by 252.1644007: cal = BTU × 252.1644007. For example, 5 BTU = 1,260.822004 cal.
cal = BTU × 252.1644007
British thermal units to calories table
| British thermal units (BTU) | Calories (cal) |
|---|---|
| 1 | 252.1644007 |
| 2 | 504.3288014 |
| 3 | 756.4932022 |
| 4 | 1,008.657603 |
| 5 | 1,260.822004 |
| 10 | 2,521.644007 |
| 20 | 5,043.288014 |
| 25 | 6,304.110018 |
| 50 | 12,608.22004 |
| 100 | 25,216.44007 |
| 250 | 63,041.10018 |
| 500 | 126,082.2004 |
| 1,000 | 252,164.4007 |
The two units
British thermal unit (BTU). The International Table BTU, used for heating and air-conditioning ratings.
Calorie (cal). The thermochemical calorie, exactly 4.184 joules. Food "Calories" are kilocalories.
Convert British thermal units to other units
- British thermal units to joules — 1 BTU = 1,055.055853 J
- British thermal units to kilojoules — 1 BTU = 1.055055853 kJ
- British thermal units to kilocalories — 1 BTU = 0.2521644007 kcal
- British thermal units to watt-hours — 1 BTU = 0.2930710702 Wh
- British thermal units to kilowatt-hours — 1 BTU = 0.0002930711 kWh
- British thermal units to electronvolts — 1 BTU = 6.585141e+21 eV
Convert other units to calories
Questions people ask
- How many calories are in a British thermal unit?
- 252.1644007.
- How do you convert British thermal units to calories?
- cal = BTU × 252.1644007. It is the same as dividing by 0.0039656668.
- How do you convert calories back to British thermal units?
- BTU = cal ÷ 252.1644007. See calories to British thermal units.
Results use the legal definitions of each unit and are checked against the Pint unit library. Display rounds to 10 significant digits. All unit conversions · More tools
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