Table Of Contents
Gigajoule to calories Conversion
1 gigajoule (GJ) is equal to 239005736.1 calories (cal).
1 GJ = 239005736.1 cal
or
1 cal = 0.000000004184 GJ
Formula
To convert a energy from gigajoule (GJ) to calories (cal), multiply the energy in gigajoule by 239005736.1
e(cal) = e(GJ) × 239005736.1
Examples:
Convert 50 gigajoule to calories:
e(cal) = 50GJ × 239005736.1 = 11950286810 cal
Conversion table
| Gigajoule (GJ) | Calories (cal) |
|---|---|
| 1 GJ | 2.390057361376673e8 cal |
| 2 GJ | 4.780114722753346e8 cal |
| 3 GJ | 7.170172084130019e8 cal |
| 5 GJ | 1.195029e9 cal |
| 10 GJ | 2.390057e9 cal |
| 20 GJ | 4.780115e9 cal |
| 25 GJ | 5.975143e9 cal |
| 50 GJ | 1.195029e10 cal |
| 100 GJ | 2.390057e10 cal |
| 250 GJ | 5.975143e10 cal |
| 500 GJ | 1.195029e11 cal |
| 1000 GJ | 2.390057e11 cal |
| Calories (cal) | Gigajoule (GJ) |
|---|---|
| 1 cal | 4.184e-9 GJ |
| 2 cal | 8.368e-9 GJ |
| 3 cal | 1.2552e-8 GJ |
| 5 cal | 2.092e-8 GJ |
| 10 cal | 4.184e-8 GJ |
| 20 cal | 8.368e-8 GJ |
| 25 cal | 1.046e-7 GJ |
| 50 cal | 2.092e-7 GJ |
| 100 cal | 4.184e-7 GJ |
| 250 cal | 1.046e-6 GJ |
| 500 cal | 2.092e-6 GJ |
| 1000 cal | 4.184e-6 GJ |
Frequently asked questions
How do I convert gigajoule to calories?
Multiply the value in gigajoule by 239005736.1 to get the result in calories. For example, 5 GJ × 239005736.1 = 1.195029e9 cal.
How many calories are in 1 gigajoule?
1 gigajoule (GJ) is equal to 2.390057361376673e8 calories (cal).
How do I convert calories back to gigajoule?
Use the inverse operation: divide the value in calories by 239005736.1 to get the result in gigajoule.
How accurate is the gigajoule to calories conversion?
The converter multiplies by the conversion factor 239005736.1 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)