Convert kilocalories to BTU
1 kcal = 3.965667 BTU. Change the amount below, or read the formula and the reference table further down.
1 kilocalorie equals
BTU
1 kcal = 3.965667 BTU
The formula
Kilocalories and BTU both measure energy from the same zero, so a single multiplier does the job.
BTU = kcal × 3.96566683
Going the other way? Convert BTU to kilocalories.
Kilocalories to BTU table
Common values, rounded for reading.
| Kilocalories (kcal) | BTU (BTU) |
|---|---|
| 1 | 3.9657 |
| 2 | 7.9313 |
| 3 | 11.897 |
| 4 | 15.8627 |
| 5 | 19.8283 |
| 6 | 23.794 |
| 7 | 27.7597 |
| 8 | 31.7253 |
| 9 | 35.691 |
| 10 | 39.6567 |
| 15 | 59.485 |
| 20 | 79.3133 |
| 25 | 99.1417 |
| 30 | 118.97 |
| 40 | 158.63 |
| 50 | 198.28 |
| 75 | 297.43 |
| 100 | 396.57 |
| 250 | 991.42 |
| 500 | 1,982.83 |
| 1,000 | 3,965.67 |
Questions people ask
- How many BTU are in a kilocalorie?
- One kilocalorie equals 3.96566683 BTU.
- How do I convert kilocalories to BTU by hand?
- Multiply the number of kilocalories by 3.96566683. For a rough check, 4 is close enough for most everyday use.
- What is 1 kilocalorie in BTU?
- 1 kilocalorie is 3.965667 BTU.
Calcuit generates this page from a unit table, so the factors here match every other page on the site.