Kilojoules to BTU converter (kJ to BTU)
Convert Kilojoules (kJ) to BTU (BTU) with this free calculator. Type a value, press Convert, and the page applies the same factor shown in the formula below — no rounded shortcut, and nothing is stored on a server.
How to convert Kilojoules to BTU
1 kilojoule (kJ) is equal to 0.947817 BTU.
E(BTU) = E(kJ) × 0.947817
Multiply kilojoules by 0.947817:
Example: Convert 10 kJ to BTU:
E(BTU) = 10 × 0.947817 = 9.47817 BTU
What is a Kilojoules?
The Kilojoules (kJ) is the starting or target unit on this page. Use the calculator above to convert values without looking up the factor by hand.
What is a BTU?
The BTU (BTU) is the starting or target unit on this page. Use the calculator above to convert values without looking up the factor by hand.
This page converts energy from Kilojoules into BTU. One kJ equals 0.9478171 BTU.
Kilojoules to BTU conversion table
Common kJ values and the matching BTU result, calculated with the same factor as the widget. Highlight a nearby row if you want a quick check without entering a number.
| Kilojoules (kJ) | BTU (BTU) |
|---|---|
| 0 kJ | 0 BTU |
| 1 kJ | 0.9478171 BTU |
| 5 kJ | 4.7390855 BTU |
| 10 kJ | 9.478171 BTU |
| 50 kJ | 47.390855 BTU |
| 100 kJ | 94.78171 BTU |
| 500 kJ | 473.90855 BTU |
| 1000 kJ | 947.8171 BTU |
How this calculator works
The form on this page is a Kilojoules-to-BTU converter. After you enter a number, JavaScript multiplies or rearranges it with the published conversion factor and writes the BTU result in the output box. The step-by-step panel repeats the arithmetic so you can copy it into homework or a spreadsheet.
Reviewed by Hamsen, founder of GigaTables and a biology engineer. See the about page for how formulas are checked before a tool is published.
FAQ
How many BTU are in 1 kJ?
1 kJ = 0.9478171 BTU.
How do I convert Kilojoules to BTU?
Multiply kilojoules by 0.947817:
Is this kJ to BTU converter free?
Yes. GigaTables calculators are free to use in a browser. You do not need an account, and the values you type are not uploaded.