British Thermal Unit to Kilocalorie Converter
Convert British Thermal Unit (BTU) to Kilocalorie (kcal) instantly with this energy converter. Use the calculator above, then check the formula, worked examples, table, and manual steps below.
Formula
kcal = BTU × 0.2521644007
Multiply the British Thermal Unit value by 0.2521644007 to get the equivalent value in Kilocalorie.
Example Conversions
1 British Thermal Unit (BTU)
0.2521644007 Kilocalorie (kcal)
5 British Thermal Unit (BTU)
1.260822004 Kilocalorie (kcal)
10 British Thermal Unit (BTU)
2.521644007 Kilocalorie (kcal)
25 British Thermal Unit (BTU)
6.304110018 Kilocalorie (kcal)
100 British Thermal Unit (BTU)
25.21644007 Kilocalorie (kcal)
Conversion Table
| British Thermal Unit (BTU) | Kilocalorie (kcal) |
|---|---|
| 0.1 | 0.02521644007 |
| 0.5 | 0.1260822004 |
| 1 | 0.2521644007 |
| 2 | 0.5043288014 |
| 5 | 1.260822004 |
| 10 | 2.521644007 |
| 25 | 6.304110018 |
| 50 | 12.60822004 |
| 100 | 25.21644007 |
| 250 | 63.04110018 |
| 500 | 126.0822004 |
| 1000 | 252.1644007 |
How to Convert Manually
Use these steps to convert British Thermal Unit values to Kilocalorie without the calculator.
- Write down the value in British Thermal Unit (BTU) that you want to convert.
- Multiply that value by 0.2521644007.
- For example, 10 British Thermal Unit × 0.2521644007 = 2.521644007 Kilocalorie.
- Label the result as Kilocalorie (kcal).
Relative Size Comparison
This chart shows the visual difference in size between exactly one British Thermal Unit and one Kilocalorie.
About British Thermal Unit and Kilocalorie
Converting British Thermal Unit to Kilocalorie is common in energy applications, engineering, and everyday life. Whether you are translating specifications from international manuals, completing homework, or planning a project, having an accurate BTU to kcal calculation ensures your measurements are correct.
The British Thermal Unit is a unit of energy. One British Thermal Unit equals 1055.055853 J in this converter's base scale.
The Kilocalorie is also a energy unit. One Kilocalorie equals 4184 J in the same base scale.
Precision and Rounding: When converting British Thermal Unit to Kilocalorie, you may encounter long decimal numbers. For most practical purposes, rounding to two or three decimal places is sufficient. However, for machining, scientific research, or strict engineering tolerances, you should maintain as much precision as possible before your final calculation.
Worked Example
15 British Thermal Unit equals 3.782466011 Kilocalorie.
15 BTU × 0.2521644007 = 3.782466011 kcal
FAQ
How do I convert British Thermal Unit to Kilocalorie?
Multiply the British Thermal Unit value by 0.2521644007 to get the equivalent value in Kilocalorie.
What is the formula for British Thermal Unit to Kilocalorie?
The formula is kcal = BTU × 0.2521644007.
How many Kilocalorie are in 1 British Thermal Unit?
1 British Thermal Unit equals 0.2521644007 Kilocalorie.
Can I convert Kilocalorie back to British Thermal Unit?
Yes. 1 Kilocalorie equals 3.965666831 British Thermal Unit, and the related converter can reverse the calculation.
What are common names for British Thermal Unit and Kilocalorie?
British Thermal Unit is shown as BTU and may also be searched as btu, british thermal unit. Kilocalorie is shown as kcal and may also be searched as kilocalorie, kilocalories, food calorie.
Was this page helpful?
Let us know if this converter met your needs.