⚡ cal to BTU — Calorie to BTU Converter
Convert energy units — joules, calories, kilowatt-hours, BTU, kilojoules.
| Unit | Name | Value |
|---|---|---|
| J | Joule | 4.184 |
| kJ | Kilojoule | 0.004184 |
| kcal | Kilocalorie (Cal) | 0.001 |
| kWh | Kilowatt-hour | 0.0000011622222 |
| BTU | BTU | 0.0039656512 |
About Calorie to BTU Conversion
The Calorie (cal) and the BTU (BTU) are both units of energy. Converting between them is straightforward using the formula above.
Formula: 1 cal = 0.0039656512 BTU
This converter uses internationally recognized conversion factors. All calculations are performed client-side in your browser — no data is sent to any server.
Frequently Asked Questions
How do I convert Calorie to BTU?
Use the converter above — enter your value in Calorie and the result appears instantly in BTU. The formula is: 1 cal = 0.0039656512 BTU
How many BTU are in 100 Calorie?
100 cal = 0.39656512 BTU
What is 1 Calorie in BTU?
1 cal = 0.0039656512 BTU
Is this Calorie to BTU converter free?
Yes — Unitafy is completely free, requires no signup, and works instantly in your browser.
About Calorie and BTU
Calorie: The small calorie (cal) equals approximately 4.184 Joules — the energy to raise 1 gram of water by 1°C. Not to be confused with the food Calorie (kilocalorie).
BTU: The British Thermal Unit (BTU) equals approximately 1,055 Joules. It is used for heating and cooling systems, particularly in the United States.