Quick answer: 1 Kilojoule in BTU
1 kJ equals 0.947817 BTU. To convert Kilojoule to BTU, multiply by 0.947817 using the free calculator above — no signup needed.
Energy & Work units
Every unit in this category with its exact value. Click any card to open its converter.
About Energy & Work Converter
The Energy & Work Converter converts between 7 different units, including Joule, Kilojoule, Calorie, Kilocalorie (kcal), Watt-hour (Wh). The base unit is the Joule, and every other unit on this page is defined as an exact multiple of it. Type any value into the calculator above to convert instantly — free, unlimited, no signup and nothing to install.
Common equivalents: 1 Joule = 0.001 Kilojoule, 0.239006 Calorie, 0.000239006 Kilocalorie (kcal).
Scale of this category: the smallest unit is the Joule (J) and the largest is the Kilowatt-hour (kWh) (kWh).
Last updated: 2026-09-15
Energy & Work conversion factors
| Unit | Symbol | Value in Joule |
|---|---|---|
| Joule | J | 1 J = 1 J |
| Kilojoule | kJ | 1 kJ = 1000 J |
| Calorie | cal | 1 cal = 4.184 J |
| Kilocalorie (kcal) | kcal | 1 kcal = 4184 J |
| Watt-hour (Wh) | Wh | 1 Wh = 3600 J |
| Kilowatt-hour (kWh) | kWh | 1 kWh = 3600000 J |
| BTU | BTU | 1 BTU = 1055.06 J |
Worked Examples
See exactly how the conversion works with real numbers, step by step.
How much is 1 Kilojoule in BTU?
- Multiply 1 by the conversion factor 0.947817
- 1 Kilojoule = 0.947817 BTU
How much is 10 Kilojoule in BTU?
- Multiply 10 by the conversion factor 0.947817
- 10 Kilojoule = 9.478171 BTU
How much is 100 Kilojoule in BTU?
- Multiply 100 by the conversion factor 0.947817
- 100 Kilojoule = 94.781712 BTU
Quick Conversion Reference Table
| Kilojoule (kJ) | BTU (BTU) |
|---|---|
| 1 kJ (Kilojoule) | 0.947817 BTU (BTU) |
| 2 kJ (Kilojoule) | 1.895634 BTU (BTU) |
| 5 kJ (Kilojoule) | 4.739086 BTU (BTU) |
| 10 kJ (Kilojoule) | 9.478171 BTU (BTU) |
| 20 kJ (Kilojoule) | 18.956342 BTU (BTU) |
| 50 kJ (Kilojoule) | 47.390856 BTU (BTU) |
| 100 kJ (Kilojoule) | 94.781712 BTU (BTU) |
| 500 kJ (Kilojoule) | 473.90856 BTU (BTU) |
| 1000 kJ (Kilojoule) | 947.81712 BTU (BTU) |
Popular Energy & Work Converter Conversions
Jump straight to the exact conversion you need — every pair has its own page.
Share this conversion
Grab a Pinterest-ready image (1000 × 1500) or pin this page directly.
How to Use This Converter
- Enter your value
Type any number into the input field above. The result updates instantly as you type — no button needed.
- Choose your units
Pick the source and target units from the dropdowns, or tap ⇄ to swap them around.
- Copy or explore
Copy the result with one tap, check the formula, or browse the worked examples and reference table below.
FAQ
How much is 1 Kilojoule in BTU?
1 Kilojoule = 0.947817 BTU.
How do I convert Kilojoule to BTU?
Enter your value in Kilojoule into the converter above and the result in BTU appears instantly. 1 kJ equals 0.947817 BTU — just multiply your value by 0.947817.
What is the formula for Kilojoule to BTU?
The formula is: value in BTU = value in Kilojoule × 0.947817. For example, 10 kJ × 0.947817 = 9.478171 BTU.
Is this Kilojoule to BTU converter free and accurate?
Yes. This Kilojoule to BTU converter is 100% free, uses the exact international conversion factor (0.947817), and works on any device with no signup.
How do I convert BTU back to Kilojoule?
To convert back, divide by 0.947817 (or multiply by 1.055056). You can also use our dedicated How Many Kilojoule in 1 BTU? page for instant results.
Do I need to download an app or sign up?
No. The converter runs entirely in your browser — nothing to install, no account, no fees. It even keeps working offline once the page has loaded.
Which Energy & Work units are supported?
This converter supports 7 units: Joule, Kilojoule, Calorie, Kilocalorie (kcal), Watt-hour (Wh), Kilowatt-hour (kWh), BTU.