Table Of Contents
Gigajoule to kilocalories Conversion
1 gigajoule (GJ) is equal to 239005.7361 kilocalories (kcal).
1 GJ = 239005.7361 kcal
or
1 kcal = 0.000004184 GJ
Formula
To convert a energy from gigajoule (GJ) to kilocalories (kcal), multiply the energy in gigajoule by 239005.7361
e(kcal) = e(GJ) × 239005.7361
Examples:
Convert 1 gigajoule to kilocalories:
e(kcal) = 1GJ × 239005.7361 = 239005.7361 kcal
Conversion table
| Gigajoule (GJ) | Kilocalories (kcal) |
|---|---|
| 1 GJ | 239005.736137667 kcal |
| 2 GJ | 478011.472275335 kcal |
| 3 GJ | 717017.208413002 kcal |
| 5 GJ | 1195028.680688337 kcal |
| 10 GJ | 2390057.361376673 kcal |
| 20 GJ | 4780114.722753346 kcal |
| 25 GJ | 5975143.403441682 kcal |
| 50 GJ | 1.1950286806883365e7 kcal |
| 100 GJ | 2.390057361376673e7 kcal |
| 250 GJ | 5.9751434034416825e7 kcal |
| 500 GJ | 1.1950286806883365e8 kcal |
| 1000 GJ | 2.390057361376673e8 kcal |
| Kilocalories (kcal) | Gigajoule (GJ) |
|---|---|
| 1 kcal | 4.184e-6 GJ |
| 2 kcal | 8.368e-6 GJ |
| 3 kcal | 1.2552e-5 GJ |
| 5 kcal | 2.092e-5 GJ |
| 10 kcal | 4.184e-5 GJ |
| 20 kcal | 8.368e-5 GJ |
| 25 kcal | 1.046e-4 GJ |
| 50 kcal | 2.092e-4 GJ |
| 100 kcal | 4.184e-4 GJ |
| 250 kcal | 0.001046 GJ |
| 500 kcal | 0.002092 GJ |
| 1000 kcal | 0.004184 GJ |
Frequently asked questions
How do I convert gigajoule to kilocalories?
Multiply the value in gigajoule by 239005.7361 to get the result in kilocalories. For example, 5 GJ × 239005.7361 = 1195028.680688337 kcal.
How many kilocalories are in 1 gigajoule?
1 gigajoule (GJ) is equal to 239005.736137667 kilocalories (kcal).
How do I convert kilocalories back to gigajoule?
Use the inverse operation: divide the value in kilocalories by 239005.7361 to get the result in gigajoule.
How accurate is the gigajoule to kilocalories conversion?
The converter multiplies by the conversion factor 239005.7361 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)