1 cal equals 0.001 kcal. To convert cal to kcal, multiply the value by 0.001; divide by 0.001 to convert back. Enter any number above and the result appears instantly — free and entirely in your browser.
How do you convert cal to kcal?
The conversion formula is kcal = cal × 0.001. The conversion factor is fixed by definition, so the result is always exact.
cal to kcal conversion table
| cal | kcal |
|---|---|
| 1 cal | 0.001 kcal |
| 2 cal | 0.002 kcal |
| 5 cal | 0.005 kcal |
| 10 cal | 0.01 kcal |
| 100 cal | 0.1 kcal |
| 1,000 cal | 1 kcal |
What is cal (cal)?
The calorie (cal) is roughly the energy to warm one gram of water by 1 °C, about 4.184 joules. The 'calories' on food labels are actually kilocalories.
What is kcal (kcal)?
The kilocalorie (kcal), also written Calorie, equals 1,000 calories or 4.184 kJ. It is the food-energy unit used in nutrition worldwide.
Why convert cal to kcal?
Energy units come from different fields: joules and kilojoules in physics, kilocalories on food labels, kilowatt-hours on electricity bills, BTU in heating and air-conditioning. Converting between them is common for nutrition, utility bills and HVAC.
One kilocalorie (the food Calorie) equals exactly 4.184 kJ — which is why nutrition labels show both. One kilowatt-hour is 3.6 MJ, equal to about 3,412 BTU or 860 kcal (BIPM/ISO).
How to convert cal to kcal
- Enter the value in cal into the left field of the converter.
- Read the result in kcal instantly in the right field — it updates automatically.
- Use the swap button to reverse the direction (kcal to cal).
The converter runs entirely in your browser: no uploads, no queue, no limits. You can even use it offline.