卡路里 ⇄ 千焦换算器
在 kcal 与 kJ 之间换算食品能量
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卡路里 ⇄ 千焦换算器
在美国、英国和世界大部分地区，食品能量以千卡(kcal，通常写作 "Calories")表示，而在澳大利亚、新西兰和欧盟标签上则以千焦(kJ)表示。本换算器采用精确系数 1 kcal = 4.184 kJ 在两种单位之间转换，让你能用熟悉的单位读懂任何营养标签或食谱。输入数值并选择其所属单位，即可立即获得对应的换算结果。
换算公式：1 kcal = 4.184 kJ。在美国及许多国家，食品能量以千卡(kcal，常简称 "Calories")标注；在澳大利亚、新西兰和欧盟则以千焦(kJ)标注(并与 kcal 一同列出)。
常见问题
- 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.