Converters
12
Calories to British thermal units Converter
Convert calories to british thermal units instantly with the formula, worked examples, rounding guidance, and related energy conversions.
Units
85
Mode
Live
Pair-specific conversion guide
Calorie to British thermal unit formula
Use this Calorie to British thermal unit page for direct energy conversions. The calculator keeps the exact cal to BTU relationship on the page, so the result, formula, and examples all describe this specific pair.
Formula model
1 cal = 0.00396566683139 BTU
1 Calorie equals
Quick factor: 1 cal = 0.00396566683139 BTU.
The current calculator value is 1 cal, which equals 0.00396566683139 BTU.
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 BTU. Full decimal precision is kept for the calculation; only the displayed value is rounded for readability.
Reference: NIST conversion factorsEnergy
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British thermal units 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 British thermal unit questions
How do you convert Calorie to British thermal unit?
Use the formula 1 cal = 0.00396566683139 BTU. As a quick check, 1 cal equals 0.00396566683139 BTU.
Is the Calorie to British thermal unit conversion exact?
This page uses fixed constants from the Converter Science catalog. Displayed results are rounded only to keep the page readable.