Converters
12
Calories to Joules Converter
Convert calories to joules instantly with the formula, worked examples, rounding guidance, and related energy conversions.
Units
85
Mode
Live
Pair-specific conversion guide
Calorie to Joule formula
Use this Calorie to Joule page for direct energy conversions. The calculator keeps the exact cal to J relationship on the page, so the result, formula, and examples all describe this specific pair.
Formula model
1 cal = 4.184 J
1 Calorie equals
Quick factor: 1 cal = 4.184 J.
The current calculator value is 1 cal, which equals 4.184 J.
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 J. Full decimal precision is kept for the calculation; only the displayed value is rounded for readability.
Reference: NIST conversion factorsEnergy
Popular conversions
Joules to Calories Converter
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Energy links
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 Joule questions
How do you convert Calorie to Joule?
Use the formula 1 cal = 4.184 J. As a quick check, 1 cal equals 4.184 J.
Is the Calorie to Joule conversion exact?
This page uses fixed constants from the Converter Science catalog. Displayed results are rounded only to keep the page readable.