Btus to Joules Converter
Convert British thermal unit to joule instantly. Type a value below — the result updates as you type.
When you need to convert British thermal unit to joule
Energy conversions appear on nutrition labels, utility bills and appliance specs, letting you compare food energy, electricity use and heating output on a common scale.
Typical values: 0.5 BTU is about 527.5279 J, and 5 BTU works out to roughly 5275.28 J. Because the ratio is fixed at 1055.06, you can scale any amount linearly — doubling the BTUs doubles the joules.
Food packaging, power meters and heating equipment each prefer different energy units, so converting makes them directly comparable.
How to convert British thermal unit to joule
One British thermal unit equals 1055.06 joules. To convert, multiply the number of BTUs by 1055.06:
joules = BTUs × 1055.06
For example, 10 BTUs × 1055.06 = 10550.6 joules.
Btus to joules conversion table
| Energy (BTU) | Joules (J) |
|---|---|
| 1 BTU | 1055.06 J |
| 2 BTU | 2110.11 J |
| 3 BTU | 3165.17 J |
| 5 BTU | 5275.28 J |
| 10 BTU | 10550.6 J |
| 20 BTU | 21101.1 J |
| 50 BTU | 52752.8 J |
| 100 BTU | 105506 J |
FAQ
How many joules are in a British thermal unit?
One British thermal unit = 1055.06 joules.
How do I convert joules back to BTUs?
Divide by 1055.06, or use the joules to BTUs converter.