Convert joules to kilocalories
1 J = 0.00023901 kcal. Change the amount below, or read the formula and the reference table further down.
1 joule equals
kilocalories
1 J = 0.00023901 kcal
The formula
Joules and kilocalories both measure energy from the same zero, so a single multiplier does the job.
kcal = J × 0.0002390057
Going the other way? Convert kilocalories to joules.
Joules to kilocalories table
Common values, rounded for reading.
| Joules (J) | Kilocalories (kcal) |
|---|---|
| 1 | 0.000239 |
| 2 | 0.000478 |
| 3 | 0.000717 |
| 4 | 0.000956 |
| 5 | 0.001195 |
| 6 | 0.001434 |
| 7 | 0.001673 |
| 8 | 0.001912 |
| 9 | 0.002151 |
| 10 | 0.00239 |
| 15 | 0.003585 |
| 20 | 0.00478 |
| 25 | 0.005975 |
| 30 | 0.00717 |
| 40 | 0.00956 |
| 50 | 0.01195 |
| 75 | 0.017925 |
| 100 | 0.023901 |
| 250 | 0.059751 |
| 500 | 0.119503 |
| 1,000 | 0.239006 |
Questions people ask
- How many kilocalories are in a joule?
- One joule equals 0.0002390057 kilocalories.
- How do I convert joules to kilocalories by hand?
- Multiply the number of joules by 0.0002390057. For a rough check, 0 is close enough for most everyday use.
- What is 1 joule in kilocalories?
- 1 joule is 0.00023901 kilocalories.
Calcuit generates this page from a unit table, so the factors here match every other page on the site.