Energy Converter

Convert joules, calories, kilocalories, watt-hours, kilowatt-hours and other energy units instantly.

Energy Details

Enter conversion details

Enter an energy value and select the source and destination units.

Quick Conversions

Select a pair

Energy Value

From Unit

To Unit

kcal

Energy units

Joules are the SI unit of energy. Watt-hours are commonly used for electrical energy, while calories and kilocalories are often used for heat and food energy.

Your converted energy will appear here

Enter an energy value, select the source and destination units, then click Convert Energy.

Popular Energy Units

Joule

Kilojoule

kcal

Kilocalorie

kWh

Kilowatt-hour

Simple Process

Convert Energy in 3 Steps

Enter an energy value, select the source and destination units and get the converted result instantly.

Enter Energy

Enter the energy value you want to convert.

Select Units

Choose the source and destination energy units.

View Conversion

See the converted energy and equivalent values in other units.