1 kJ equals 0.947817 BTU. To convert kJ to BTU, multiply the value by 0.947817; divide by 0.947817 to convert back. Enter any number above and the result appears instantly — free and entirely in your browser.
How do you convert kJ to BTU?
The conversion formula is BTU = kJ × 0.947817. The conversion factor is fixed by definition, so the result is always exact.
kJ to BTU conversion table
| kJ | BTU |
|---|---|
| 1 kJ | 0.947817 BTU |
| 2 kJ | 1.89563 BTU |
| 5 kJ | 4.73909 BTU |
| 10 kJ | 9.47817 BTU |
| 100 kJ | 94.7817 BTU |
| 1,000 kJ | 947.817 BTU |
What is kJ (kJ)?
The kilojoule (kJ) equals 1,000 joules. It is the SI energy unit on European food labels, usually shown next to kilocalories.
What is BTU (BTU)?
The British thermal unit (BTU) is roughly the energy to heat one pound of water by 1 °F, about 1,055 joules. It rates heating, boilers and air conditioners, especially in the US.
Why convert kJ to BTU?
Energy units come from different fields: joules and kilojoules in physics, kilocalories on food labels, kilowatt-hours on electricity bills, BTU in heating and air-conditioning. Converting between them is common for nutrition, utility bills and HVAC.
One kilocalorie (the food Calorie) equals exactly 4.184 kJ — which is why nutrition labels show both. One kilowatt-hour is 3.6 MJ, equal to about 3,412 BTU or 860 kcal (BIPM/ISO).
How to convert kJ to BTU
- Enter the value in kJ into the left field of the converter.
- Read the result in BTU instantly in the right field — it updates automatically.
- Use the swap button to reverse the direction (BTU to kJ).
The converter runs entirely in your browser: no uploads, no queue, no limits. You can even use it offline.