browserutils

Energy Converter

Convert between joules, calories, kWh, BTU, and eV

Energy Converter is a free online tool from BrowserUtils that convert between joules, calories, kwh, btu, and ev. It runs entirely in your browser — your data never leaves your device. No account required.

1
0.239006
2.777778e-7
9.478134e-4
6.241509e+18

How to use Energy Converter

  1. 1 Paste or type your input into the editor above.
  2. 2 The tool processes your data instantly — right in your browser, with nothing sent to a server.
  3. 3 Copy the result with one click or continue editing your input.

About Energy Converter

Free online energy converter. Convert between joules, calories, kilowatt-hours, BTU, and electron volts instantly. This tool runs entirely in your browser — your data is never sent to a server. Just paste your input, get instant results, and copy with one click. No sign-up or installation required.

Energy Converter specs

Runtime
100% client-side (browser)
Cost
Free — no account, no rate limits, no usage caps
Browser support
Chrome 90+, Firefox 88+, Safari 14+, Edge 90+
Part of
299 developer tools on BrowserUtils (100% client-side)

Questions

How many joules are in a calorie?
One thermochemical calorie equals approximately 4.184 joules. One food Calorie (kcal) equals 4,184 joules.
What is a kilowatt-hour?
A kilowatt-hour (kWh) is a unit of energy equal to 3,600,000 joules. It represents the energy consumed by a 1,000-watt appliance running for one hour.
What is a BTU and where is it used?
A BTU (British Thermal Unit) is the amount of energy needed to raise one pound of water by one degree Fahrenheit. It is commonly used in heating, cooling, and HVAC specifications.
What energy units does the converter support?
The converter supports joules, calories, kilocalories, kilowatt-hours, BTU, and electron volts, covering scientific, nutritional, electrical, and physics applications.
Embed this tool

Copy this code to embed the tool on your website. Adjust the height to fit your layout.

<iframe src="https://www.browserutils.dev/embed/energy-converter" width="100%" height="500" frameborder="0" title="Energy Converter"></iframe>

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