Converters
12
British thermal units to Joules Converter
Convert british thermal units to joules instantly with the formula, worked examples, rounding guidance, and related energy conversions.
Units
85
Mode
Live
Pair-specific conversion guide
British thermal unit to Joule formula
Use this British thermal unit to Joule page for direct energy conversions. The calculator keeps the exact BTU to J relationship on the page, so the result, formula, and examples all describe this specific pair.
Formula model
1 BTU = 1055.05585262 J
1 British thermal unit equals
Quick factor: 1 BTU = 1055.05585262 J.
The current calculator value is 1 BTU, which equals 1055.05585262 J.
Use the conversion table to compare 1 BTU 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 BTU and J. Full decimal precision is kept for the calculation; only the displayed value is rounded for readability.
Reference: NIST conversion factorsEnergy
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Joules to British thermal units Converter
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Conversion table
1 British thermal unit equals
| Unit | Value |
|---|---|
| Joule J | 1055.05585262 |
| Kilojoule kJ | 1.05505585262 |
| Calorie cal | 252.164400722 |
| Kilocalorie kcal | 0.252164400722 |
| Watt-hour Wh | 0.293071070172 |
| Kilowatt-hour kWh | 0.000293071070172 |
FAQ
British thermal unit to Joule questions
How do you convert British thermal unit to Joule?
Use the formula 1 BTU = 1055.05585262 J. As a quick check, 1 BTU equals 1055.05585262 J.
Is the British thermal unit to Joule conversion exact?
This page uses fixed constants from the Converter Science catalog. Displayed results are rounded only to keep the page readable.