⚡ Energy
BTU to calories Converter
Convert BTU to calories instantly with a reference conversion table.
Quick answer: To convert BTU to calories, multiply by 252.164. For example, 1 BTU = 252.164 calories. Use the calculator below for any value.
BTU to calories
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Common conversions
| BTU | calories |
|---|
Formula:
How to convert BTU to calories
1
Enter your value
Type the number of btu you want to convert into the left box. The result in calories appears instantly in the right box. You can also type into the right box to convert in the other direction.
2
Use the swap button
Click the ⇄ Swap button to reverse the conversion — calories to BTU. Your current value carries across so you don't have to re-enter anything.
3
About BTU and calories
BTU and calories are common energy measurements.
📊 Common conversions at a glance
| BTU | calories |
|---|---|
| 0.004 | 1.009 |
| 0.1 | 25.22 |
| 0.5 | 126.1 |
| 1 | 252.2 |
| 5 | 1261 |
| 10 | 2522 |
Reviewed for 2026. BTU ↔ calories conversion factor verified against published reference data. Built by a UK-based qualified primary teacher and FA Level 2 coach as part of 247QuickTools' free utility-tools project.