Convert calorie (thermochemical)s to british thermal units
1 cal = 0.00396566683139 BTU — exactly. Both units are defined against the SI, so this factor is a fraction, not an approximation.
How to convert calorie (thermochemical)s to british thermal units
Multiply the number of calorie (thermochemical)s by 0.00396566683139 to get british thermal units.
Calorie (thermochemical): Exactly 4.184 J. The "small" calorie.
British thermal unit: International Table BTU, exactly 1055.055 852 62 J. HVAC capacity is quoted in BTU/h.
Calorie (thermochemical) to British thermal unit conversion table
| Calorie (thermochemical)s (cal) | British thermal units (BTU) |
|---|---|
| 1 cal | 0.003 965 666 8 |
| 2 cal | 0.007 931 333 7 |
| 3 cal | 0.011 897 |
| 5 cal | 0.019 828 334 |
| 10 cal | 0.039 656 668 |
| 20 cal | 0.079 313 337 |
| 25 cal | 0.099 141 671 |
| 50 cal | 0.198 283 34 |
| 100 cal | 0.396 566 68 |
| 250 cal | 0.991 416 71 |
| 500 cal | 1.982 833 4 |
| 1000 cal | 3.965 666 8 |
British thermal unit to Calorie (thermochemical) conversion table
| British thermal units (BTU) | Calorie (thermochemical)s (cal) |
|---|---|
| 1 BTU | 252.1644 |
| 2 BTU | 504.3288 |
| 3 BTU | 756.4932 |
| 5 BTU | 1260.822 |
| 10 BTU | 2521.644 |
| 20 BTU | 5043.288 |
| 25 BTU | 6304.11 |
| 50 BTU | 12 608.22 |
| 100 BTU | 25 216.44 |
| 250 BTU | 63 041.1 |
| 500 BTU | 126 082.2 |
| 1000 BTU | 252 164.4 |
Frequently asked
How many british thermal units are in a calorie (thermochemical)?
One calorie (thermochemical) equals 0.003965666831 british thermal units (cal → BTU). That figure is exact, not rounded.
How do you convert calorie (thermochemical)s to british thermal units?
Multiply the number of calorie (thermochemical)s by 0.00396566683139 to get british thermal units.
What is 1 BTU in calorie (thermochemical)s?
One british thermal unit is 252.1644007 calorie (thermochemical)s.
What is 10 cal in BTU?
10 cal = 0.039 656 668 BTU.
What exactly is a calorie (thermochemical)?
Exactly 4.184 J. The "small" calorie.
What exactly is a british thermal unit?
International Table BTU, exactly 1055.055 852 62 J. HVAC capacity is quoted in BTU/h.