卡路里 ⇄ 千焦換算器
在 kcal 與 kJ 之間換算食品能量
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卡路里 ⇄ 千焦換算器
在美國、英國和世界大部分地區，食品能量以千卡(kcal，通常寫作 "Calories")表示，而在澳洲、紐西蘭和歐盟標籤上則以千焦(kJ)表示。本換算器採用精確係數 1 kcal = 4.184 kJ 在兩種單位之間轉換，讓你能用熟悉的單位讀懂任何營養標示或食譜。輸入數值並選擇其所屬單位，即可立即取得對應的換算結果。
換算公式：1 kcal = 4.184 kJ。在美國及許多國家，食品能量以千卡(kcal，常簡稱 "Calories")標示；在澳洲、紐西蘭和歐盟則以千焦(kJ)標示(並與 kcal 一同列出)。
常見問題
- What is the difference between calories and kilojoules?
- Both measure food energy. The kilocalorie (kcal, often just called a calorie) is common in the US, while the kilojoule (kJ) is the metric unit used in much of the world. One kcal equals 4.184 kJ, so they describe the same energy in different units.
- How do you convert calories to kilojoules?
- Multiply kilocalories by 4.184 to get kilojoules, or divide kilojoules by 4.184 to get kilocalories. For example, 100 kcal equals 418.4 kJ. Enter a value in either field and the converter returns the equivalent instantly.
- Why do food labels use different energy units?
- It depends on the country's regulations. Australia and the EU show kilojoules (the EU shows both), while US labels show calories. The converter lets you compare products across labels by translating any value to the unit you are familiar with.