1 BTU to calories
1 BTU = 252.16 cal. Change the amount below, or read the formula and the reference table further down.
1 BTU equals
calories
1 BTU = 252.16 cal
The formula
BTU and calories both measure energy from the same zero, so a single multiplier does the job.
cal = BTU × 252.16
Going the other way? Convert calories to BTU.
BTU to calories table
Values either side of 1 BTU.
| BTU (BTU) | Calories (cal) |
|---|---|
| -4 | -1,008.66 |
| -3.5 | -882.58 |
| -3 | -756.49 |
| -2.5 | -630.41 |
| -2 | -504.33 |
| -1.5 | -378.25 |
| -1 | -252.16 |
| -0.5 | -126.08 |
| 0 | 0 |
| 0.5 | 126.08 |
| 1 | 252.16 |
| 1.5 | 378.25 |
| 2 | 504.33 |
| 2.5 | 630.41 |
| 3 | 756.49 |
| 3.5 | 882.58 |
| 4 | 1,008.66 |
| 4.5 | 1,134.74 |
| 5 | 1,260.82 |
| 5.5 | 1,386.9 |
| 6 | 1,512.99 |
Questions people ask
- How many calories are in a BTU?
- One BTU equals 252.16 calories.
- How do I convert BTU to calories by hand?
- Multiply the number of BTU by 252.16. For a rough check, 252.16 is close enough for most everyday use.
- What is 1 BTU in calories?
- 1 BTU is 252.16 calories.
Calcuit generates this page from a unit table, so the factors here match every other page on the site.