Table Of Contents
Gigajoule to joules Conversion
1 gigajoule (GJ) is equal to 1000000000 joules (joule).
1 GJ = 1000000000 joule
or
1 joule = 0.000000001 GJ
Formula
To convert a energy from gigajoule (GJ) to joules (joule), multiply the energy in gigajoule by 1000000000
e(joule) = e(GJ) × 1000000000
Examples:
Convert 1000 gigajoule to joules:
e(joule) = 1000GJ × 1000000000 = 1000000000000 joule
Conversion table
| Gigajoule (GJ) | Joules (joule) |
|---|---|
| 1 GJ | 1e9 joule |
| 2 GJ | 2e9 joule |
| 3 GJ | 3e9 joule |
| 5 GJ | 5e9 joule |
| 10 GJ | 1e10 joule |
| 20 GJ | 2e10 joule |
| 25 GJ | 2.5e10 joule |
| 50 GJ | 5e10 joule |
| 100 GJ | 1e11 joule |
| 250 GJ | 2.5e11 joule |
| 500 GJ | 5e11 joule |
| 1000 GJ | 1e12 joule |
| Joules (joule) | Gigajoule (GJ) |
|---|---|
| 1 joule | 1e-9 GJ |
| 2 joule | 2e-9 GJ |
| 3 joule | 3e-9 GJ |
| 5 joule | 5e-9 GJ |
| 10 joule | 1e-8 GJ |
| 20 joule | 2e-8 GJ |
| 25 joule | 2.5e-8 GJ |
| 50 joule | 5e-8 GJ |
| 100 joule | 1e-7 GJ |
| 250 joule | 2.5e-7 GJ |
| 500 joule | 5e-7 GJ |
| 1000 joule | 1e-6 GJ |
Frequently asked questions
How do I convert gigajoule to joules?
Multiply the value in gigajoule by 1000000000 to get the result in joules. For example, 5 GJ × 1000000000 = 5e9 joule.
How many joules are in 1 gigajoule?
1 gigajoule (GJ) is equal to 1e9 joules (joule).
How do I convert joules back to gigajoule?
Use the inverse operation: divide the value in joules by 1000000000 to get the result in gigajoule.
How accurate is the gigajoule to joules conversion?
The converter multiplies by the conversion factor 1000000000 and rounds the result to 9 decimal places by default. You can increase or reduce the precision with the digits option on this page.
Sources
Conversion factors are based on internationally recognised standards:
- BIPM — The International System of Units (SI Brochure, 9th edition)
- NIST Guide to the SI, Appendix B.8: Factors for Units Listed Alphabetically (NIST SP 811, 2008 edition)
- NIST Guide to the SI (SP 811), Footnotes (notes 22 and 23)
- CODATA Value: electron volt-joule relationship (NIST Fundamental Physical Constants)