Convert British Thermal Unit to Joule
1 british thermal unit = 1,055.056 joule (J). For example, 10 british thermal unit = 10,550.56 joule and 100 british thermal unit = 105,505.6 joule. Type any value below to convert british thermal unit to joule both ways — it runs entirely in your browser.
British Thermal Unit to Joule conversion formula
To convert british thermal unit to joule, multiply by 1,055.056:
joule = british thermal unit × 1,055.056
Going the other way, 1 joule = 0.0009478171 british thermal unit, so
british thermal unit = joule × 0.0009478171.
British Thermal Unit to Joule — worked examples
| British Thermal Unit | Joule |
|---|---|
| 1 BTU | 1,055.056 J |
| 2 BTU | 2,110.112 J |
| 3 BTU | 3,165.168 J |
| 5 BTU | 5,275.279 J |
| 10 BTU | 10,550.56 J |
| 25 BTU | 26,376.4 J |
| 50 BTU | 52,752.79 J |
| 100 BTU | 105,505.6 J |
British Thermal Unit ↔ Joule reference table
| British Thermal Unit → Joule | Joule → British Thermal Unit |
|---|---|
| 1 BTU = 1,055.056 J | 1 J = 0.0009478171 BTU |
| 2 BTU = 2,110.112 J | 2 J = 0.001895634 BTU |
| 5 BTU = 5,275.279 J | 5 J = 0.004739086 BTU |
| 10 BTU = 10,550.56 J | 10 J = 0.009478171 BTU |
| 20 BTU = 21,101.12 J | 20 J = 0.01895634 BTU |
| 50 BTU = 52,752.79 J | 50 J = 0.04739086 BTU |
| 100 BTU = 105,505.6 J | 100 J = 0.09478171 BTU |
| 250 BTU = 263,764 J | 250 J = 0.2369543 BTU |
| 500 BTU = 527,527.9 J | 500 J = 0.4739086 BTU |
| 1000 BTU = 1,055,056 J | 1000 J = 0.9478171 BTU |
About british thermal unit and joule
British Thermal Unit: A British thermal unit is roughly the heat needed to raise one pound of water by 1 °F — about 1,055.06 J (the International Table BTU). Common in heating, cooling (AC tonnage) and US energy work.
Joule: The joule is the SI unit of energy — the work done by a force of one newton acting over one metre (1 J = 1 N·m), and also one watt-second.
Frequently asked questions
- How many joule are in 1 british thermal unit?
- 1 british thermal unit = 1,055.056 joule (J).
- How do I convert british thermal unit to joule?
- Multiply the number of british thermal unit by 1,055.056. For example, 10 british thermal unit = 10 × 1,055.056 = 10,550.56 joule.
- How many british thermal unit are in 1 joule?
- 1 joule = 0.0009478171 british thermal unit.
- Which is bigger, british thermal unit or joule?
- 1 british thermal unit equals 1,055.056 joule, so a british thermal unit is the larger unit.