Calories to British thermal units
Convert cal to BTU. 1 calorie = 0.003965666831 BTU, and 1 british thermal unit = 252.164400722 cal.
Formula Multiply the value in calories by 0.003965666831. Calories to British thermal units table
1 calorie in every unit
| Joules | 4.184 | J |
|---|---|---|
| Kilojoules | 0.004184 | kJ |
| Megajoules | 0.000004184 | MJ |
| Kilocalories | 0.001 | kcal |
| Watt-hours | 0.001162222222 | Wh |
| Kilowatt-hours | 0.000001162222 | kWh |
| British thermal units | 0.003965666831 | BTU |
| Foot-pounds | 3.08596003258 | ft·lbf |
| Electronvolts | 2.611447e+19 | eV |
Food labels write kilocalories (kcal) as "Calories". Calories here are thermochemical: 1 cal = 4.184 J.
How to convert calories to british thermal units
Multiply the value in calories by 0.003965666831.
For example, 10 cal = 0.039656668314 BTU, and 10 BTU = 2,521.64400722 cal.
Frequently asked questions
How many british thermal units are in one calorie?
1 calorie = 0.003965666831 BTU.
What is 10 cal in BTU?
10 cal = 0.039656668314 BTU.
How do I convert BTU back to cal?
Multiply the value in british thermal units by 252.164400722. 1 british thermal unit = 252.164400722 cal.
Calories to British thermal units table
| Calories (cal) | British thermal units (BTU) |
|---|---|
| 0.1 | 0.000396566683 |
| 0.5 | 0.001982833416 |
| 1 | 0.003965666831 |
| 2 | 0.007931333663 |
| 3 | 0.011897000494 |
| 4 | 0.015862667326 |
| 5 | 0.019828334157 |
| 6 | 0.023794000988 |
| 7 | 0.02775966782 |
| 8 | 0.031725334651 |
| 9 | 0.035691001483 |
| 10 | 0.039656668314 |
| 15 | 0.059485002471 |
| 20 | 0.079313336628 |
| 25 | 0.099141670785 |
| 30 | 0.118970004942 |
| 50 | 0.19828334157 |
| 75 | 0.297425012354 |
| 100 | 0.396566683139 |
| 250 | 0.991416707848 |
| 500 | 1.9828334157 |
| 1,000 | 3.96566683139 |
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