Kilojoule to BTU Converter
Convert kilojoule to BTU instantly.
Standard energy units
joule 100000
calorie 23900.574
kilocalorie 23.901
watt-hour 27.778
kilowatt-hour 0.0278
BTU 94.781
Fun comparisons
apples eaten 🍎~ 0.29
hours of 100W bulb 💡~ 0.28
marathons run 🏃~ 0.03
full car tanks of fuel ⛽~ Less than 0.01
How to convert kilojoule to btu
Enter your energy value in kilojoule and see the result in btu instantly. Key reference points: 1 food Calorie equals 1 kcal (4.184 kJ), and 1 kilowatt-hour equals 3600 kJ (860 kcal).
Kilojoule is used in metric energy calculations and food labeling; BTU is the US standard for HVAC and heating systems. One BTU equals approximately 1.055 kilojoules.
Need the opposite direction? Convert btu to kilojoule just as easily, or explore all our energy conversions.
Common kilojoule to BTU conversions
| Kilojoule (kJ) | BTU (BTU) |
|---|---|
| 1 | 0.947813 |
| 5 | 4.73907 |
| 10 | 9.47813 |
| 25 | 23.6953 |
| 50 | 47.3907 |
| 100 | 94.7813 |
| 500 | 473.907 |
| 1000 | 947.813 |
Frequently asked questions
1 kilojoule equals 0.947813 BTU.
Multiply by 0.947813. For example, 5 kJ = 4.73907 BTU.
10.55 kilojoules equals approximately 10 BTU.
1 BTU equals 1.05506 kilojoule.
100 kilojoule equals 94.7813 BTU.