BTU to Calorie
Convert BTU to Calorie instantly. Free online engineering unit converter with exact formula, conversion table and FAQ.
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Formula
cal = BTU × 252.164
BTU = cal × 0.00396567
Conversion table
| 1 BTU | 252.164 cal |
| 5 BTU | 1260.82 cal |
| 10 BTU | 2521.64 cal |
| 20 BTU | 5043.29 cal |
| 50 BTU | 12608.2 cal |
| 100 BTU | 25216.4 cal |
| 500 BTU | 126082 cal |
| 1000 BTU | 252164 cal |
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Frequently asked questions
What is the source unit in this conversion?
The source unit is the BTU (BTU). British thermal unit.
What is the destination unit in this conversion?
The destination unit is the Calorie (cal). A thermochemical calorie is 4.184 joules.
How do I convert BTU to Calorie?
Multiply the BTU value by 252.164. For example, 10 BTU × 252.164 = 2521.64 cal.
Is the BTU to Calorie conversion exact?
Yes. Both units belong to the same engineering measurement family (energy), so the ratio between them is a fixed, defined value rather than a measured approximation.
Where is this conversion commonly used?
It's used whenever a value expressed in BTU needs to be compared with, or reported in, Calorie, such as in engineering, scientific, or industrial calculations.
Can I convert Calorie back to BTU?
Yes. Multiply the Calorie value by 0.00396567 to get BTU.
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About this conversion
This page converts BTU (BTU) to Calorie (cal) within the engineering converter.
British thermal unit. A thermochemical calorie is 4.184 joules.
The formula is cal = BTU × 252.164, based on each unit's fixed relationship to the energy base unit.
The conversion is exact, since it relies on a fixed numerical ratio between the two units rather than a measured or approximate value.
Use the calculator above for instant results, or the table below for common BTU values already converted to Calorie.