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Joule to Gigajoule Converter

Convert Joule to Gigajoule instantly — live results with exact conversion factors.

1e-9 GJ

Answer

1 joule = 1e-9 gigajoules. To convert J to GJ, multiply by 1e-9.

Quick Reference Table

Joule (J) Gigajoule (GJ)
1 1e-9
2 2e-9
5 5e-9
10 1e-8
20 2e-8
50 5e-8
100 1e-7
250 2.5e-7
500 5e-7
1000 0.000001

Formula

Convert Joule (J) to Gigajoule (GJ) using the relationship: 

GJ = J × 1e-9

How to Convert

  1. Take the value in joules (J).
  2. Multiply it by 1e-9 (the conversion factor from J to GJ).
  3. The result is the equivalent value in gigajoules (GJ).
  4. Example: 1 J = 1e-9 GJ.

Reverse Conversion

Need it the other direction? Gigajoule to Joule conversion.

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FAQ

▸ How many gigajoules are in 1 joule?

1 Joule equals 1e-9 gigajoules. Multiply by 1e-9 to convert J to GJ.

▸ What is the formula to convert joule to gigajoule?

Multiply the value in joules by 1e-9 to get gigajoules. Formula: GJ = J × 1e-9.

▸ How do I convert joules to gigajoules easily?

Enter your value in the converter at the top of this page — the gigajoules result updates live as you type. You can also multiply by 1e-9 directly.