Calorie to Kilojoule Converter | Energy Converter
Convert 1 calorie to kilojoules. 1 calorie = 0.0042 kilojoules. Easy energy conversion calculator for calorie to kilojoule. Accurate results for physics, engineering, and nutrition.
Calorie to Kilojoule Conversion
Convert calorie to kilojoule easily with our accurate energy conversion calculator. Whether you're working on physics problems, nutritional calculations, electrical engineering, or thermodynamics, our tool provides instant and precise results.
Conversion Formula
1 cal = 0.004184 kJ
To convert calorie to kilojoule, multiply the calorie value by 0.004184.
Common Calorie to Kilojoule Conversions
| Calorie (cal) | = Kilojoule (kJ) |
|---|---|
| 1 | 0.0042 |
| 10 | 0.0418 |
| 100 | 0.4184 |
| 500 | 2.092 |
| 1000 | 4.184 |
| 4184 | 17.5059 |
| 3600000 | 15062.4 |
Understanding Calorie and Kilojoule
Calorie (cal)
The calorie is a unit of energy in the Common system.
• Energy needed to raise 1g water by 1°C
• 1 calorie = 4.184 joules
• Often confused with kilocalorie (Calorie)
• Used in chemistry and biology
Kilojoule (kJ)
The kilojoule is a unit of energy in the SI system.
Common to SI Conversion
You are converting from a common unit to a si unit. This conversion is commonly needed when:
- Comparing nutritional information with scientific data
- Calculating electricity costs for different energy sources
- Converting physics laboratory measurements
- Working with international engineering specifications
- Translating between different measurement traditions
Practical Examples
Everyday Examples
Scientific Examples
Conversion Tips
Quick Mental Calculation
For approximate conversions, remember these quick multipliers:
For Precise Calculations
Always use our converter tool or the exact conversion factor:
1 cal = 0.004184 kJ
Remember These Key Equivalents
- 1 food Calorie = 1 kilocalorie = 4184 joules
- 1 kWh = 3.6 million joules = 3.6 MJ
- 1 BTU = 1055.06 joules ≈ 1.055 kJ
- 1 eV = 1.602 × 10⁻¹⁹ joules
- 1 therm = 100,000 BTU = 105.5 million joules
Need Other Energy Conversions?
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