Quick answer: 1 Calorie in Kilocalorie (kcal)
1 cal equals 0.001 kcal. To convert Calorie to Kilocalorie (kcal), multiply by 0.001 using the free calculator above — no signup needed.
Energy & Work units
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About Energy & Work Converter
The Energy & Work Converter converts between 7 different units, including Joule, Kilojoule, Calorie, Kilocalorie (kcal), Watt-hour (Wh). The base unit is the Joule, and every other unit on this page is defined as an exact multiple of it. Type any value into the calculator above to convert instantly — free, unlimited, no signup and nothing to install.
Common equivalents: 1 Joule = 0.001 Kilojoule, 0.239006 Calorie, 0.000239006 Kilocalorie (kcal).
Scale of this category: the smallest unit is the Joule (J) and the largest is the Kilowatt-hour (kWh) (kWh).
Last updated: 2026-09-15
Energy & Work conversion factors
| Unit | Symbol | Value in Joule |
|---|---|---|
| Joule | J | 1 J = 1 J |
| Kilojoule | kJ | 1 kJ = 1000 J |
| Calorie | cal | 1 cal = 4.184 J |
| Kilocalorie (kcal) | kcal | 1 kcal = 4184 J |
| Watt-hour (Wh) | Wh | 1 Wh = 3600 J |
| Kilowatt-hour (kWh) | kWh | 1 kWh = 3600000 J |
| BTU | BTU | 1 BTU = 1055.06 J |
Worked Examples
See exactly how the conversion works with real numbers, step by step.
How much is 1 Calorie in Kilocalorie (kcal)?
- Multiply 1 by the conversion factor 0.001
- 1 Calorie = 0.001 Kilocalorie (kcal)
How much is 100 Calorie in Kilocalorie (kcal)?
- Multiply 100 by the conversion factor 0.001
- 100 Calorie = 0.1 Kilocalorie (kcal)
How much is 1000 Calorie in Kilocalorie (kcal)?
- Multiply 1000 by the conversion factor 0.001
- 1000 Calorie = 1 Kilocalorie (kcal)
Quick Conversion Reference Table
| Calorie (cal) | Kilocalorie (kcal) (kcal) |
|---|---|
| 1 cal (Calorie) | 0.001 kcal (Kilocalorie (kcal)) |
| 2 cal (Calorie) | 0.002 kcal (Kilocalorie (kcal)) |
| 5 cal (Calorie) | 0.005 kcal (Kilocalorie (kcal)) |
| 10 cal (Calorie) | 0.01 kcal (Kilocalorie (kcal)) |
| 20 cal (Calorie) | 0.02 kcal (Kilocalorie (kcal)) |
| 50 cal (Calorie) | 0.05 kcal (Kilocalorie (kcal)) |
| 100 cal (Calorie) | 0.1 kcal (Kilocalorie (kcal)) |
| 500 cal (Calorie) | 0.5 kcal (Kilocalorie (kcal)) |
| 1000 cal (Calorie) | 1 kcal (Kilocalorie (kcal)) |
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FAQ
How much is 1 Calorie in Kilocalorie (kcal)?
1 Calorie = 0.001 Kilocalorie (kcal).
How do I convert Calorie to Kilocalorie (kcal)?
Enter your value in Calorie into the converter above and the result in Kilocalorie (kcal) appears instantly. 1 cal equals 0.001 kcal — just multiply your value by 0.001.
What is the formula for Calorie to Kilocalorie (kcal)?
The formula is: value in Kilocalorie (kcal) = value in Calorie × 0.001. For example, 100 cal × 0.001 = 0.1 kcal.
Is this Calorie to Kilocalorie (kcal) converter free and accurate?
Yes. This Calorie to Kilocalorie (kcal) converter is 100% free, uses the exact international conversion factor (0.001), and works on any device with no signup.
How do I convert Kilocalorie (kcal) back to Calorie?
To convert back, divide by 0.001 (or multiply by 1000). You can also use our dedicated How Many Calorie in 1 Kilocalorie (kcal)? page for instant results.
Do I need to download an app or sign up?
No. The converter runs entirely in your browser — nothing to install, no account, no fees. It even keeps working offline once the page has loaded.
Which Energy & Work units are supported?
This converter supports 7 units: Joule, Kilojoule, Calorie, Kilocalorie (kcal), Watt-hour (Wh), Kilowatt-hour (kWh), BTU.