Table Of Contents
Kilocalories to gigajoule Conversion
1 kilocalories (kcal) is equal to 0.000004184 gigajoule (GJ).
1 kcal = 0.000004184 GJ
or
1 GJ = 239005.7361 kcal
Formula
To convert a energy from kilocalories (kcal) to gigajoule (GJ), divide the energy in kilocalories by 239005.7361
e(GJ) = e(kcal) / 239005.7361
Examples:
Convert 1 kilocalories to gigajoule:
e(GJ) = 1kcal / 239005.7361 = 0.000004184 GJ
Conversion table
| 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 |
| 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 |
Frequently asked questions
How do I convert kilocalories to gigajoule?
Divide the value in kilocalories by 239005.7361 to get the result in gigajoule. For example, 5 kcal ÷ 239005.7361 = 2.092e-5 GJ.
How many gigajoule are in 1 kilocalories?
1 kilocalories (kcal) is equal to 4.184e-6 gigajoule (GJ).
How do I convert gigajoule back to kilocalories?
Use the inverse operation: multiply the value in gigajoule by 239005.7361 to get the result in kilocalories.
How accurate is the kilocalories to gigajoule 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)