British Thermal Units to Calories Converter
EngineeringJoules, calories, kilowatt-hours and more.
How to convert British Thermal Units to Calories
Multiply the british thermal units value by 252.165: 1 BTU = 252.165 cal. Going the other way, 1 cal = 0.00396565 BTU, so divide by 252.165 or use the Calories to British Thermal Units converter.
About these units
British Thermal Units (BTU)
A British thermal unit is the energy needed to raise one pound of water by one degree Fahrenheit, about 1,055 joules. Heating and air-conditioning capacities are rated in BTU per hour.
Calories (cal)
The calorie used here is the thermochemical calorie, exactly 4.184 joules, roughly the energy needed to warm one gram of water by one degree Celsius. Food calories are actually kilocalories.
British Thermal Units to Calories conversion table
| British Thermal Units (BTU) | Calories (cal) |
|---|---|
| 1 BTU | 252.165 cal |
| 2 BTU | 504.331 cal |
| 3 BTU | 756.496 cal |
| 4 BTU | 1,008.66 cal |
| 5 BTU | 1,260.83 cal |
| 10 BTU | 2,521.65 cal |
| 20 BTU | 5,043.31 cal |
| 25 BTU | 6,304.13 cal |
| 50 BTU | 12,608.3 cal |
| 100 BTU | 25,216.5 cal |
| 500 BTU | 126,083 cal |
| 1,000 BTU | 252,165 cal |
More british thermal units conversions
- British Thermal Units to Therms1 BTU = 1e-5 thm
- British Thermal Units to Foot Pounds1 BTU = 778.172 ft⋅lb
- British Thermal Units to Horsepower Hours1 BTU = 0.000393016 hp⋅h
- British Thermal Units to Joules1 BTU = 1,055.06 J
- British Thermal Units to Watt Hours1 BTU = 0.293072 Wh
- British Thermal Units to Ergs1 BTU = 1.0551e+10 erg
See every unit on the Energy Converter.