Converting between british thermal units and calories is essential in physics, nutrition, electrical engineering, and heating calculations. Energy units bridge different domains: joules in physics, calories in nutrition, kilowatt-hours in electricity, and BTUs in heating.
138.79834 btu = 35000.000227 cal
138.79834 (one hundred and thirty-eight) british thermal unit(s) is equal to 35000.000227 (thirty-five thousand) calorie(s)
What is british thermal unit?
The British thermal unit (BTU) equals approximately 1,055 joules. It is used in the United States for rating heating and cooling systems, water heaters, and the energy content of fuels.
What is calorie?
The calorie (cal) equals 4.184 joules. It was originally defined as the energy needed to raise one gram of water by one degree Celsius. Small calories are used in chemistry and physics.
How to convert btu to cal
To convert British thermal unit to Calorie, multiply the value by 252.1644007218.
138.79834 btu × 252.1644007218 = 35000.000227 cal
Common Conversions
| btu | cal (Calorie) | Description |
|---|---|---|
| 1 BTU | 252.164401 cal | 1 British thermal unit(s) = 252.164401 Calorie(s) |
| 2 BTU | 504.328801 cal | 2 British thermal unit(s) = 504.328801 Calorie(s) |
| 5 BTU | 1260.822004 cal | 5 British thermal unit(s) = 1260.822004 Calorie(s) |
| 10 BTU | 2521.644007 cal | 10 British thermal unit(s) = 2521.644007 Calorie(s) |
| 25 BTU | 6304.110018 cal | 25 British thermal unit(s) = 6304.110018 Calorie(s) |
| 50 BTU | 12608.220036 cal | 50 British thermal unit(s) = 12608.220036 Calorie(s) |
| 100 BTU | 25216.440072 cal | 100 British thermal unit(s) = 25216.440072 Calorie(s) |
| 250 BTU | 63041.10018 cal | 250 British thermal unit(s) = 63041.10018 Calorie(s) |
| 500 BTU | 126082.200361 cal | 500 British thermal unit(s) = 126082.200361 Calorie(s) |
| 1000 BTU | 252164.400722 cal | 1000 British thermal unit(s) = 252164.400722 Calorie(s) |
| 2500 BTU | 630411.001804 cal | 2500 British thermal unit(s) = 630411.001804 Calorie(s) |
| 5000 BTU | 1260822.003609 cal | 5000 British thermal unit(s) = 1260822.003609 Calorie(s) |
| 10000 BTU | 2521644.007218 cal | 10000 British thermal unit(s) = 2521644.007218 Calorie(s) |
Convert British thermal unit to other units
| btu | Unit | Description |
|---|---|---|
| 138.79834 BTU | 146440.000951 J | Joule |
| 138.79834 BTU | 146.440001 kJ | Kilojoule |
| 138.79834 BTU | 0.14644 MJ | Megajoule |
| 138.79834 BTU | 35000.000227 cal | Calorie |
| 138.79834 BTU | 35 kcal | Kilocalorie |
| 138.79834 BTU | 40.677778 Wh | Watt-hour |
| 138.79834 BTU | 0.040678 kWh | Kilowatt-hour |