cal to BTU converter
1 cal = 0.00396567 BTU
And 1 BTU = 252.164 cal. Calories (thermochemical) to British thermal units (IT).
Formula
BTU = cal × 0.00396567
A reading of 25 cal is 25 × 0.00396567 = 0.0991417 BTU.
cal to BTU table
| cal | BTU |
|---|---|
| 1 cal | 0.00396567 BTU |
| 5 cal | 0.0198283 BTU |
| 10 cal | 0.0396567 BTU |
| 25 cal | 0.0991417 BTU |
| 50 cal | 0.198283 BTU |
| 100 cal | 0.396567 BTU |
| 500 cal | 1.98283 BTU |
| 1,000 cal | 3.96567 BTU |
| 10,000 cal | 39.6567 BTU |
BTU to cal table
| BTU | cal |
|---|---|
| 1 BTU | 252.164 cal |
| 5 BTU | 1,260.82 cal |
| 10 BTU | 2,521.64 cal |
| 25 BTU | 6,304.11 cal |
| 50 BTU | 12,608.2 cal |
| 100 BTU | 25,216.4 cal |
About these units
cal (calories (thermochemical)): Small heat quantities in science work.
BTU (British thermal units (IT)): US heating, cooling and fuel energy.
The BTU used here is the International Table BTU (1,055.056 J). A foot-pound of energy (ft·lbf) is the same dimension as a lbf·ft of torque, but the two are different physical quantities.
Convert BTU to cal instead · All energy and work conversions