Heat/Energy Unit Converter Online
热量换算卡路里千瓦时能量单位
Convert across 8 energy units: J, kJ, cal, kcal, Wh, kWh, BTU and eV — for food calories, electricity costs and physics homework, fully local.
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How to Use
- Enter the value you want to convert
- Select the source unit and target unit
- Result appears instantly — reverse conversion supported
- Conversions use standard factors computed locally — works offline too
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FAQ
Food calories vs kilojoules?
A food Calorie is a kilocalorie: 1 kcal = 4.184 kJ; a label reading 2000 kJ is about 478 kcal.
How much energy is one kWh?
1 kWh = 3.6 MJ = 859.8 kcal — enough to run a 40 W bulb for 25 hours.
Will my data be uploaded?
No, all conversions run locally in your browser.