Science · Units

Energy Converter

Convert food, HVAC, and physics energy units in one live table.

  • Joules (J)3600000
  • Kilojoules (kJ)3600
  • Calories (cal)860420.650096
  • Kilocalories (kcal)860.420650096
  • Watt-hours (Wh)1000
  • Kilowatt-hours (kWh)1
  • BTU (IT)3412.14163313
  • Electronvolts (eV)2.246943e+25

How to use

  1. Enter a value and choose the source unit.
  2. Read conversions across all listed units.
  3. Copy the value you need.

Features

  • J, cal, kcal, Wh, kWh, BTU, eV
  • Live conversion table
  • Runs in your browser. Nothing is uploaded to ToolsWeb servers.

Privacy & how it works

This unit converter runs in your browser. Values you enter are not uploaded to ToolsWeb servers for this tool. Privacy Policy.

FAQ

Is a food calorie the same as a calorie?expand_more

Food labels usually mean kilocalories (kcal). This tool lists both cal and kcal.

Is this calculator free?expand_more

Yes. No signup required.

Are my numbers uploaded?expand_more

No. Calculations run in your browser. Inputs are not sent to ToolsWeb servers for this tool.

Is this professional advice?expand_more

No. Results are estimates for general information. See our Disclaimer for health, finance, and related tools.

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