Our kcal to cal converter provides precise energy conversions with 4 decimal places precision by default.
*Supports kilocalories (kcal) to calories (cal) and cal to kcal conversion
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Reference table for common kcal to cal conversions (rounded to 4 decimal places)
| Kilocalories (kcal) | Calories (cal) | Kilocalories (kcal) | Calories (cal) |
|---|---|---|---|
| 0.1 kcal | 100.0000 cal | 11 kcal | 11000.0000 cal |
| 0.25 kcal | 250.0000 cal | 15 kcal | 15000.0000 cal |
| 0.5 kcal | 500.0000 cal | 20 kcal | 20000.0000 cal |
| 1 kcal | 1000.0000 cal | 50 kcal | 50000.0000 cal |
| 2 kcal | 2000.0000 cal | 100 kcal | 100000.0000 cal |
| 5 kcal | 5000.0000 cal | 200 kcal | 200000.0000 cal |
| 10 kcal | 10000.0000 cal | 500 kcal | 500000.0000 cal |
Learn how to convert kcal to cal manually with step-by-step instructions
The relationship between kilocalories (kcal) and calories (cal) is fixed and simple:
1 kilocalorie (kcal) = 1000 calories (cal)
This means 1 kcal is equivalent to 1000 small calories. Note that "food calories" (as listed on nutrition labels) are actually kilocalories (1 food calorie = 1 kcal = 1000 cal).
To convert kilocalories to calories, use the following formula:
Example: Convert 2.75 kcal to cal
Calories = 2.75 kcal × 1000
Calories = 2750.0000 cal
To convert calories to kilocalories, reverse the formula:
Example: Convert 5250 cal to kcal
Kilocalories = 5250 cal ÷ 1000
Kilocalories = 5.2500 kcal
Since the conversion factor (1000) is a whole number, the precision of the result depends on the input value:
Discover where kcal to cal conversion is essential in daily life and professional fields
Most food labels display "calories" (actually kcal) per serving. Converting to cal helps understand precise energy content, especially for strict dietary plans or clinical nutrition.
Fitness trackers measure calorie burn in kcal. Converting to cal is useful for detailed workout analysis, especially for high-intensity training or professional athlete monitoring.
In biochemistry and physiology, energy measurements often use small calories (cal) for precise calculations of metabolic processes or cellular energy transfer.
Recipe scaling often requires adjusting calorie content. Converting between kcal and cal ensures accurate portion control, especially for dietary-restricted recipes.
Dietitians use precise calorie measurements (in cal) for patients with specific medical conditions (e.g., diabetes, kidney disease) requiring strict energy intake control.
Pet food labels use kcal, but precise pet diets (especially for small animals or exotic pets) require conversion to cal for accurate portion sizing.
Answers to common questions about kcal to cal conversion
Kcal stands for kilocalories, and cal stands for calories. The key difference is scale: 1 kcal = 1000 cal. Importantly, "calories" on food labels are actually kilocalories (1 food calorie = 1 kcal). This naming convention can be confusing, but the conversion factor is always 1000.
While most daily uses (like food tracking) only need 1-2 decimal places, 4 decimal places are useful for:
Yes, the conversion factor between kcal and cal is a fixed metric prefix relationship (kilo- = 1000). Unlike some unit conversions (e.g., temperature), there are no variations based on temperature, pressure, or other conditions. This makes kcal to cal conversion one of the simplest unit conversions.
First convert kcal to cal (1 kcal = 1000 cal), then use these factors for other units:
For more complex conversions, use a comprehensive energy unit converter that supports multiple units.
Fitness trackers use kcal (food calories) because the numbers are more manageable for users. For example, a 30-minute walk burns ~150 kcal (150,000 cal) — displaying "150" is more intuitive than "150000." This aligns with how food calories are labeled, making it easier for users to balance calorie intake and burn.
Energy Converter
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Accurately convert kilocalories (kcal) to calories (cal) and vice versa with 4 decimal places precision by default.
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