QConvert
Gigajoule to Megajoule Converter
Convert Gigajoule to Megajoule instantly — live results with exact conversion factors.
Answer
1 gigajoule = 1000 megajoules. To convert GJ to MJ, multiply by 1000.
Quick Reference Table
| Gigajoule (GJ) | Megajoule (MJ) |
|---|---|
| 1 | 1000 |
| 2 | 2000 |
| 5 | 5000 |
| 10 | 10000 |
| 20 | 20000 |
| 50 | 50000 |
| 100 | 100000 |
| 250 | 250000 |
| 500 | 500000 |
| 1000 | 1000000 |
Formula
Convert Gigajoule (GJ) to Megajoule (MJ) using the relationship:
MJ = GJ × 1000
How to Convert
- Take the value in gigajoules (GJ).
- Multiply it by 1000 (the conversion factor from GJ to MJ).
- The result is the equivalent value in megajoules (MJ).
- Example: 1 GJ = 1000 MJ.
Reverse Conversion
Need it the other direction? Megajoule to Gigajoule conversion.
All Energy Conversions
See the full list of Energy conversions.
Related Conversions
FAQ
▸ How many megajoules are in 1 gigajoule?
1 Gigajoule equals 1000 megajoules. Multiply by 1000 to convert GJ to MJ.
▸ What is the formula to convert gigajoule to megajoule?
Multiply the value in gigajoules by 1000 to get megajoules. Formula: MJ = GJ × 1000.
▸ How do I convert gigajoules to megajoules easily?
Enter your value in the converter at the top of this page — the megajoules result updates live as you type. You can also multiply by 1000 directly.