Calorie to BTU Converter
Convert calorie to BTU instantly.
Standard energy units
joule 418.4
kilojoule 0.4184
kilocalorie 0.1
watt-hour 0.1162
kilowatt-hour 0.0001
BTU 0.3966
Fun comparisons
apples eaten 🍎~ Less than 0.01
hours of 100W bulb 💡~ Less than 0.01
marathons run 🏃~ Less than 0.01
full car tanks of fuel ⛽~ Less than 0.01
How to convert calorie to btu
Enter your energy value in calorie and see the result in btu instantly. Key reference points: 1 food Calorie equals 1 kcal (4.184 kJ), and 1 kilowatt-hour equals 3600 kJ (860 kcal).
Calorie is a small energy unit used in chemistry; BTU is used in US heating and cooling ratings. One BTU equals approximately 252 calories.
Need the opposite direction? Convert btu to calorie just as easily, or explore all our energy conversions.
Common calorie to BTU conversions
| Calorie (cal) | BTU (BTU) |
|---|---|
| 1 | 0.00396565 |
| 5 | 0.0198283 |
| 10 | 0.0396565 |
| 25 | 0.0991413 |
| 50 | 0.198283 |
| 100 | 0.396565 |
| 500 | 1.98283 |
| 1000 | 3.96565 |
Frequently asked questions
1 calorie equals 0.00396565 BTU.
Multiply by 0.00396565. For example, 5 cal = 0.0198283 BTU.
252 calories equals approximately 1 BTU.
1 BTU equals 252.165 calorie.
100 calorie equals 0.396565 BTU.