Calories (thermochemical) to Kilojoules – calorie (thermochemical) to kilojoule Converter
1 cal = 0.004184 kJ
Formula
kJ = cal × 0.004184
Calories (thermochemical) to kilojoules conversion table
| calories (thermochemical) (cal) | kilojoules (kJ) |
|---|---|
| 0.5 cal | 0.002092 kJ |
| 1 cal | 0.004184 kJ |
| 2 cal | 0.008368 kJ |
| 3 cal | 0.012552 kJ |
| 5 cal | 0.02092 kJ |
| 10 cal | 0.04184 kJ |
| 20 cal | 0.08368 kJ |
| 25 cal | 0.1046 kJ |
| 50 cal | 0.2092 kJ |
| 75 cal | 0.3138 kJ |
| 100 cal | 0.4184 kJ |
| 250 cal | 1.046 kJ |
| 500 cal | 2.092 kJ |
| 1000 cal | 4.184 kJ |
| 5000 cal | 20.92 kJ |
Calories (thermochemical) and kilojoules are both energy units. One calorie (thermochemical) equals 0.004184 kilojoules; enter any value above for an instant result, or use the table for common conversions.
Sanity-check examples
1 cal = 0.004184 kJ10 cal = 0.04184 kJ2.5 cal = 0.01046 kJ
Common pitfalls and look-alike units
The "Calorie" on food labels and in fitness is the kilocalorie (kcal): 1 kcal = 4184 J, and the small calorie (cal) is one thousandth of it. This page uses the thermochemical calorie (1 cal = 4.184 J); the International Steam Table calorie is about 4.1868 J, so values differ slightly. The "degree" (度) on a Chinese electricity bill is one kilowatt-hour, and 1 kWh = 3600 kJ.
Frequently asked questions
How many kilojoules are in a calorie (thermochemical)?
1 calorie (thermochemical) (cal) equals 0.004184 kilojoule (kJ).
How do I convert calories (thermochemical) to kilojoules?
Multiply the calorie (thermochemical) value by 0.004184 to get kilojoule — for example, 2 calories (thermochemical) = 0.008368 kilojoule.
How do I convert kilojoules back to calories (thermochemical)?
1 kilojoule is approximately 239.006 calorie (thermochemical). Use the swap button or the reverse conversion page linked on this page.