Convert Kilocalorie to British Thermal Unit
Use this free converter to change kilocalories (kcal) into british thermal units (BTU). Kilocalorie and british thermal unit both measure energy. As a quick reference, 1 kcal equals 3.9656668 BTU, and 1 BTU equals 0.2521644 kcal.
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British Thermal Unit (BTU)
3.9656668
1 kcal = 3.9656668 BTU
Energy conversion table
| Kilocalorie | British Thermal Unit |
|---|---|
| 0.01 | 0.039656668 |
| 0.1 | 0.39656668 |
| 0.5 | 1.9828334 |
| 1 | 3.9656668 |
| 2 | 7.9313337 |
| 3 | 11.897001 |
| 5 | 19.828334 |
| 10 | 39.656668 |
| 20 | 79.313337 |
| 25 | 99.141671 |
| 50 | 198.28334 |
| 100 | 396.56668 |
| 1,000 | 3965.6668 |
How to convert Kilocalorie to British Thermal Unit
Multiply the kilocalorie value by 3.9656668 to get british thermal units.
- Enter the number of kilocalories you want to convert.
- The converter instantly shows the equivalent value in british thermal units.
- Worked example: 15 kcal × 3.9656668 = 59.485003 BTU.
- Use the swap button to reverse the conversion (british thermal unit to kilocalorie).
About these units
Kilocalorie (kcal)
- Definition
- A kilocalorie (kcal) is 1,000 small calories — the "Calorie" used on food labels.
- History
- It was adopted by nutritionists as a practical measure of food energy.
- Current use
- Kilocalories (food Calories) measure the energy content of food and diets.
British Thermal Unit (BTU)
- Definition
- A British thermal unit (BTU) is the energy needed to raise one pound of water by one degree Fahrenheit.
- History
- It developed with steam engineering in Britain and the United States.
- Current use
- BTUs rate heating, air-conditioning, and appliance energy in the US.
Frequently asked questions
How many british thermal units are in a kilocalorie?
There are 3.9656668 BTU in 1 kcal. To convert, multiply the number of kilocalories by 3.9656668.
How do I convert kilocalories to british thermal units?
Multiply the kilocalorie value by 3.9656668 to get british thermal units. For example, 10 kcal = 39.656668 BTU.
Is this kilocalorie-to-british thermal unit converter free?
Yes. This converter is completely free, runs entirely in your browser, and requires no sign-up. Your inputs never leave your device.
Convert Kilocalorie to other energy units
| Unit | 1 Kilocalorie equals |
|---|---|
| Joule (J) | 4184 J |
| Kilojoule (kJ) | 4.184 kJ |
| Calorie (cal) | 1000 cal |
| Watt Hour (Wh) | 1.1622222 Wh |
| Kilowatt Hour (kWh) | 0.0011622222 kWh |
| Electronvolt (eV) | 2.6114e+22 eV |
| British Thermal Unit (BTU) | 3.9656668 BTU |
| Foot-Pound (ft·lb) | 3085.96 ft·lb |