Calories to BTU
1 cal = 0.00396566683139 BTU
Converter Calculator
1 Calories (cal) = 0.003966 BTU (BTU)
Explanation
Multiply by 0.003965666831390919 (derived from joules) because 1 cal = 4.184 J and 1 BTU = 1055.05585262 J.
Common Conversion Values
| Calories (cal) | BTU (BTU) |
|---|---|
| 1 | 0.003966 |
| 5 | 0.019828 |
| 10 | 0.039657 |
| 100 | 0.396567 |
| 1,000 | 3.965667 |
| 3,600 | 14.276401 |
| 10,000 | 39.656668 |
| 1,000,000 | 3,965.666831 |
How to use this hub
- Choose a converter family.
- If converting to/from grams from a volume unit, select an ingredient.
- For pure unit changes (volume↔volume or weight↔weight), use universal conversions.
If your conversion includes grams, you’ll choose an ingredient; otherwise you won’t.
Frequently Asked Questions
What defines this conversion?
The factor is derived from exact joule-based energy definitions.
Is the reverse conversion available?
Yes. Use the switch button or open the BTU (BTU) to Calories (cal) hub to view the mirror conversion.
Can I use decimals?
Yes. Decimal inputs are supported so fractional energy values remain precise in calculator output.