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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All processing is done locally in your browser. No data is uploaded.
How to Use
- Paste any valid JSON, supports nesting, arrays and escapes
- Click Beautify to auto indent and format
- Click Minify to remove whitespace into one line
- All operations run locally for privacy
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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.