Kilocalories to British Thermal Units Converter (kcal to BTU)
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Formula
To convert kilocalories to British thermal units, multiply the value by 3.96566683.
BTU = kcal × 3.96566683
Example calculation
Convert 5 kcal to BTU:
5 kcal × 3.96566683 = 19.8283 BTU
Conversion table
| kcal | BTU |
|---|---|
| 1 | 3.9657 |
| 2 | 7.9313 |
| 3 | 11.8970 |
| 4 | 15.8627 |
| 5 | 19.8283 |
| 6 | 23.7940 |
| 7 | 27.7597 |
| 8 | 31.7253 |
| 9 | 35.6910 |
| 10 | 39.6567 |
| 15 | 59.4850 |
| 20 | 79.3133 |
| 25 | 99.1417 |
| 30 | 118.9700 |
| 35 | 138.7983 |
| 40 | 158.6267 |
| 45 | 178.4550 |
| 50 | 198.2833 |
| 55 | 218.1117 |
| 60 | 237.9400 |
| 65 | 257.7683 |
| 70 | 277.5967 |
| 75 | 297.4250 |
| 80 | 317.2533 |
| 85 | 337.0817 |
| 90 | 356.9100 |
| 95 | 376.7383 |
| 100 | 396.5667 |
| 200 | 793.1334 |
| 500 | 1982.8334 |
| 1000 | 3965.6668 |
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About the units
- Kilocalorie (kcal)
- The "food calorie" on nutrition labels. Equal to 4,184 joules.
- British Thermal Unit (BTU)
- Used for heating, cooling and gas in the US. The IT BTU is about 1,055.056 joules.
Frequently asked questions
- How do I convert kilocalories to British thermal units?
- To convert kilocalories to British thermal units, multiply the value by 3.96566683.
- How many British thermal units are in 1 kilocalorie?
- 1 kilocalorie equals 3.96567 BTU.
- How many British thermal units are in 10 kilocalories?
- 10 kcal equals 39.6567 BTU.
- How do I convert British thermal units back to kilocalories?
- Use the reverse converter: 1 British thermal unit equals 0.252164 kcal.
- Is this converter accurate?
- Yes. It uses the exact SI/NIST definitions of each unit and shows up to 6 significant digits.
Related conversions
- Reverse conversion: British thermal units → kilocalories
- joules → kilocalories
- kilocalories → joules
- joules → British thermal units
- British thermal units → joules
- kilojoules → kilocalories
- kilocalories → kilojoules
- kilojoules → British thermal units
- British thermal units → kilojoules