BTU to Joule Converter
Convert BTU to joule instantly.
Standard energy units
joule 105506
kilojoule 105.506
calorie 25216.539
kilocalorie 25.217
watt-hour 29.307
kilowatt-hour 0.0293
Fun comparisons
apples eaten 🍎~ 0.3
hours of 100W bulb 💡~ 0.29
marathons run 🏃~ 0.04
full car tanks of fuel ⛽~ Less than 0.01
How to convert btu to joule
Enter your energy value in btu and see the result in joule instantly. Key reference points: 1 food Calorie equals 1 kcal (4.184 kJ), and 1 kilowatt-hour equals 3600 kJ (860 kcal).
BTU (British Thermal Unit) is used in the US for HVAC, heating and cooling ratings; joule is the SI energy unit used worldwide in science. One BTU equals approximately 1055 joules.
Need the opposite direction? Convert joule to btu just as easily, or explore all our energy conversions.
Common BTU to joule conversions
| BTU (BTU) | Joule (J) |
|---|---|
| 1 | 1055.06 |
| 5 | 5275.3 |
| 10 | 10550.6 |
| 25 | 26376.5 |
| 50 | 52753 |
| 100 | 105506 |
| 500 | 52753 |
| 1000 | 105506 |
Frequently asked questions
1 BTU equals 1055.06 joule.
Multiply by 1055.06. For example, 5 BTU = 5275.3 J.
10,000 BTU equals approximately 10,550,600 joules.
1 joule equals 0.000947813 BTU.
100 BTU equals 105506 joule.