21千焦等於多少千卡？千焦（亦稱“千焦”，符號為：kJ）和千卡（亦稱“千卡”，符號為：kcal）是能量單位，它們之間的換算關係是：1千焦等於0.2389千卡。要將21千焦轉換為千卡，我們可以透過千焦與千卡換算比率來計算：
21 千焦 = 21 * 0.2389 千卡 = 5.0169 千卡
因此，21千焦換算成千卡的答案是21千焦等於5.0169千卡。
了解更多：21千卡等於多少千焦? | 1千焦等於幾千卡? | 1千卡等於幾千焦?
| 千焦 (kJ) | 千卡 (kcal) |
|---|---|
| 21.1 kJ | 5.04079 kcal |
| 21.2 kJ | 5.06468 kcal |
| 21.3 kJ | 5.08857 kcal |
| 21.4 kJ | 5.11246 kcal |
| 21.5 kJ | 5.13635 kcal |
| 21.6 kJ | 5.16024 kcal |
| 21.7 kJ | 5.18413 kcal |
| 21.8 kJ | 5.20802 kcal |
| 21.9 kJ | 5.23191 kcal |
| 22 kJ | 5.2558 kcal |
| 22.1 kJ | 5.27969 kcal |
| 22.2 kJ | 5.30358 kcal |
| 22.3 kJ | 5.32747 kcal |
| 22.4 kJ | 5.35136 kcal |
| 22.5 kJ | 5.37525 kcal |
| 22.6 kJ | 5.39914 kcal |
| 22.7 kJ | 5.42303 kcal |
| 22.8 kJ | 5.44692 kcal |
| 22.9 kJ | 5.47081 kcal |
| 23 kJ | 5.4947 kcal |
| 23.1 kJ | 5.51859 kcal |
| 23.2 kJ | 5.54248 kcal |
| 23.3 kJ | 5.56637 kcal |
| 23.4 kJ | 5.59026 kcal |
| 23.5 kJ | 5.61415 kcal |
| 23.6 kJ | 5.63804 kcal |
| 23.7 kJ | 5.66193 kcal |
| 23.8 kJ | 5.68582 kcal |
| 23.9 kJ | 5.70971 kcal |
| 24 kJ | 5.7336 kcal |
| 千焦 (kJ) | 千卡 (kcal) |
|---|---|
| 24.1 kJ | 5.75749 kcal |
| 24.2 kJ | 5.78138 kcal |
| 24.3 kJ | 5.80527 kcal |
| 24.4 kJ | 5.82916 kcal |
| 24.5 kJ | 5.85305 kcal |
| 24.6 kJ | 5.87694 kcal |
| 24.7 kJ | 5.90083 kcal |
| 24.8 kJ | 5.92472 kcal |
| 24.9 kJ | 5.94861 kcal |
| 25 kJ | 5.9725 kcal |
| 25.1 kJ | 5.99639 kcal |
| 25.2 kJ | 6.02028 kcal |
| 25.3 kJ | 6.04417 kcal |
| 25.4 kJ | 6.06806 kcal |
| 25.5 kJ | 6.09195 kcal |
| 25.6 kJ | 6.11584 kcal |
| 25.7 kJ | 6.13973 kcal |
| 25.8 kJ | 6.16362 kcal |
| 25.9 kJ | 6.18751 kcal |
| 26 kJ | 6.2114 kcal |
| 26.1 kJ | 6.23529 kcal |
| 26.2 kJ | 6.25918 kcal |
| 26.3 kJ | 6.28307 kcal |
| 26.4 kJ | 6.30696 kcal |
| 26.5 kJ | 6.33085 kcal |
| 26.6 kJ | 6.35474 kcal |
| 26.7 kJ | 6.37863 kcal |
| 26.8 kJ | 6.40252 kcal |
| 26.9 kJ | 6.42641 kcal |
| 27 kJ | 6.4503 kcal |