Kilowatt-hour to Gigajoule Converter
This tool converts Kilowatt-hour (kWh) to Gigajoule (GJ) instantly and accurately. As you type a value, the result updates in real time — no convert button to press, no rounding surprises. It is built for science, engineering, nutrition, and everyday energy calculations.
Who Uses This Conversion?
Engineers & Technicians
Students & Scientists
Everyday Users
How to Use
Enter the kWh value
Type the number you want to convert into the Kilowatt-hour field. Decimal points and large numbers (auto-formatted with separators) are both supported.
Read the GJ result
The Gigajoule value appears instantly in the second field as you type. Results refresh on every keystroke — no button required.
Copy or swap
Use the copy button to copy any value to your clipboard, or click the swap button (↔) to reverse the direction and convert Gigajoule back to Kilowatt-hour.
Need Other Units?
Open either unit dropdown and search by name or symbol. The converter supports Joule, Calorie, Kilocalorie, Watt-hour, Kilowatt-hour, BTU, electronvolt, and many more energy units.
Features
Instant, Real-Time Results
The result is computed as you type using a precise conversion factor — no convert button, no waiting.
Bidirectional Input
Type in either field and the other updates automatically, so you can work kWh→GJ or GJ→kWh.
Searchable Unit Menu
Each dropdown has a search box, so you can jump to any of the supported energy units by name or symbol.
One-Click Copy
Copy either value to your clipboard for use in documents, spreadsheets, or messages.
Quick Reference Table
A handy table of common kWh-to-GJ values lets you look up frequent conversions at a glance.
Private & Mobile-Friendly
All calculations run locally in your browser and the layout adapts to phones, tablets, and desktops.
Common kWh to GJ Values
| Kilowatt-hour (kWh) | Gigajoule (GJ) |
|---|---|
| 1 kWh | 0.003600 GJ |
| 5 kWh | 0.018000 GJ |
| 10 kWh | 0.036000 GJ |
| 50 kWh | 0.180000 GJ |
| 100 kWh | 0.360000 GJ |
| 1000 kWh | 3.60 GJ |
Frequently Asked Questions
How do I convert kWh to GJ?
Multiply the kWh value by 0.0036. For example, 1000 kWh = 3.6 GJ.
What is the formula for kWh to GJ?
The formula is GJ = kWh × 0.0036. To convert back the other way, use kWh = GJ × 277.777778.
What is a Kilowatt-hour (kWh)?
The kilowatt-hour is the standard unit for billing electricity. One kWh equals 1,000 Wh, or 3,600,000 joules.
What is a Gigajoule (GJ)?
One gigajoule equals 1,000,000,000 joules (1,000 MJ). It is used for large-scale energy, such as natural-gas billing.
Is this converter accurate?
Yes. It uses internationally recognized conversion factors at high precision, so results are reliable for scientific, engineering, and everyday use.
Can I convert other energy units too?
Yes. Use the dropdown menus to pick from many energy units, including Joule (J), Calorie (cal), Kilocalorie (kcal), Kilowatt-hour (kWh), BTU, electronvolt, and more.
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