⚡ Energy
kilojoules to BTU Converter
Convert kilojoules to BTU instantly with a reference conversion table.
Quick answer: To convert kilojoules to BTU, multiply by 0.947817. For example, 1 kilojoules = 0.947817 BTU. Use the calculator below for any value.
kilojoules to BTU
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Common conversions
| kilojoules | BTU |
|---|
Formula:
How to convert kilojoules to BTU
1
Enter your value
Type the number of kilojoules you want to convert into the left box. The result in btu appears instantly in the right box. You can also type into the right box to convert in the other direction.
2
Use the swap button
Click the ⇄ Swap button to reverse the conversion — BTU to kilojoules. Your current value carries across so you don't have to re-enter anything.
3
About kilojoules and BTU
kilojoules and BTU are common energy measurements.
📊 Common conversions at a glance
| kilojoules | BTU |
|---|---|
| 1 | 0.9478 |
| 5 | 4.739 |
| 10 | 9.478 |
| 50 | 47.39 |
| 100 | 94.78 |
| 500 | 473.9 |
Reviewed for 2026. kilojoules ↔ BTU conversion factor verified against published reference data. Built by a UK-based qualified primary teacher and FA Level 2 coach as part of 247QuickTools' free utility-tools project.
Frequently asked questions
How do I convert kilojoules to BTU?
To convert kilojoules to BTU, multiply by 0.947817. Or use the calculator above for instant results.
How many BTU are in 1 kilojoules?
1 kilojoules equals 0.947817 BTU.
Is the kilojoules to BTU converter free?
Yes, the kilojoules to BTU converter is completely free with no sign-up required, no downloads, and it works offline once the page has loaded.