Convert joules (J), calories (cal), kilowatt-hours (kWh), BTU, and other energy units. Energy is the capacity to do work; the joule (J) is the SI unit (1 J = 1 N·m). Nutritional calories and electrical kWh use different reference definitions tied to joules.
This energy converter transforms values from Joules (J) to Kilocalories (kcal). Results update instantly using the exact conversion factor.
The joule (J) is the SI unit of energy (1 J = 1 N·m).
The Kilocalories (kcal) is a unit of energy in the Energy category.
1 J ÷ 4184 = 0.000239 kcal
kcal = J ÷ 4184
To convert J to kcal, divide the value in J by 4184 (since 1 J = 0.000239 kcal). Equivalently, multiply by 0.000239. Example: 1 J = 1 J × 0.000239 = 0.000239 kcal.
10 J = 0.00239 kcal ÷ 4184 = 10 J
Common values from J to kcal.
| J | kcal |
|---|---|
| 1 | 0.0002 |
| 2 | 0.0005 |
| 3 | 0.0007 |
| 4 | 0.001 |
| 5 | 0.0012 |
| 6 | 0.0014 |
| 7 | 0.0017 |
| 8 | 0.0019 |
| 9 | 0.0022 |
| 10 | 0.0024 |
| 11 | 0.0026 |
| 12 | 0.0029 |
| 13 | 0.0031 |
| 14 | 0.0033 |
| 15 | 0.0036 |
| 16 | 0.0038 |
| 17 | 0.0041 |
| 18 | 0.0043 |
| 19 | 0.0045 |
| 20 | 0.0048 |