Convert 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
Common values, rounded for reading.
| BTU (BTU) | Calories (cal) |
|---|---|
| 1 | 252.16 |
| 2 | 504.33 |
| 3 | 756.49 |
| 4 | 1,008.66 |
| 5 | 1,260.82 |
| 6 | 1,512.99 |
| 7 | 1,765.15 |
| 8 | 2,017.32 |
| 9 | 2,269.48 |
| 10 | 2,521.64 |
| 15 | 3,782.47 |
| 20 | 5,043.29 |
| 25 | 6,304.11 |
| 30 | 7,564.93 |
| 40 | 10,086.58 |
| 50 | 12,608.22 |
| 75 | 18,912.33 |
| 100 | 25,216.44 |
| 250 | 63,041.1 |
| 500 | 126,082.2 |
| 1,000 | 252,164.4 |
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.