Converters
12
Calories to Kilojoules Converter
Convert calories to kilojoules instantly with the formula, worked examples, rounding guidance, and related energy conversions.
Units
85
Mode
Live
Pair-specific conversion guide
Calorie to Kilojoule formula
Use this Calorie to Kilojoule page for direct energy conversions. The calculator keeps the exact cal to kJ relationship on the page, so the result, formula, and examples all describe this specific pair.
Formula model
1 cal = 0.004184 kJ
1 Calorie equals
Quick factor: 1 cal = 0.004184 kJ.
The current calculator value is 1 cal, which equals 0.004184 kJ.
Use the conversion table to compare 1 cal with the other units in the same category.
Energy units can describe electricity, heat, or nutrition, so retain the unit symbol with every result.
Precision and rounding
The calculation uses the catalog's fixed conversion factors between cal and kJ. Full decimal precision is kept for the calculation; only the displayed value is rounded for readability.
Reference: NIST conversion factorsEnergy
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Kilojoules to Calories Converter
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Conversion table
1 Calorie equals
| Unit | Value |
|---|---|
| Joule J | 4.184 |
| Kilojoule kJ | 0.004184 |
| Kilocalorie kcal | 0.001 |
| Watt-hour Wh | 0.00116222222222 |
| Kilowatt-hour kWh | 1.16222222222E-06 |
| British thermal unit BTU | 0.00396566683139 |
FAQ
Calorie to Kilojoule questions
How do you convert Calorie to Kilojoule?
Use the formula 1 cal = 0.004184 kJ. As a quick check, 1 cal equals 0.004184 kJ.
Is the Calorie to Kilojoule conversion exact?
This page uses fixed constants from the Converter Science catalog. Displayed results are rounded only to keep the page readable.