Kilocalories to calories
Type a value in kilocalories to see it in calories straight away, or type in the second box to convert back.
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Processing and privacy: The result is calculated inside your browser and your data is not sent to any server.
How to use it
- Type the value in the kilocalories box.
- Read the result in calories as you type, and pick the precision you need.
- Swap the direction to convert back, or copy the result.
How it is calculated
cal = kcal × 1,000
Multiply the value in kilocalories by 1,000 to get calories.
Example
To convert 25 kcal to calories: 25 × 1,000 = 25,000 cal.
Conversion table
| Kilocalories (kcal) | Calories (cal) |
|---|---|
| 1 | 1,000 |
| 2 | 2,000 |
| 3 | 3,000 |
| 5 | 5,000 |
| 10 | 10,000 |
| 20 | 20,000 |
| 25 | 25,000 |
| 50 | 50,000 |
| 100 | 100,000 |
| 250 | 250,000 |
| 500 | 500,000 |
| 1,000 | 1,000,000 |
About the units
- Kilocalorie
- Equal to 1000 thermochemical calories, exactly 4184 joules. This is the everyday food calorie.
- Calorie
- The small calorie in its thermochemical definition, exactly 4.184 joules. The food calorie on labels equals 1000 of these.
Limits and caveats
- Results are rounded for display and computed with the browser's floating point precision (about 15 significant digits).
- Both unit factors are exact by their official definitions.
Questions about this tool
How many calories are in one kilocalorie?
1 kcal = 1,000 cal exactly.
How do I convert kilocalories to calories?
Use cal = kcal × 1,000. For example, 25 kcal = 25,000 cal.
How many kilocalories are in one calorie?
1 cal = 0.001 kcal.
Which calorie do these converters use?
The thermochemical calorie, exactly 4.184 joules, the factor many countries use to turn kcal into kJ on food labels. The International Table calorie is 4.1868 joules, less than 0.07% larger.
What is the difference between kW and kWh?
A kilowatt is a unit of power, the rate of using energy, while a kilowatt-hour is an amount of energy. A 2 kW heater running for three hours uses 6 kWh.