What energy units are supported?

Convert between joules, kilojoules, calories, kilocalories, watt-hours, kilowatt-hours, electronvolts, BTU, and foot-pounds.

What is the difference between calories and kilocalories?

A kilocalorie (kcal) is 1,000 calories. Food nutrition labels use kilocalories but often label them as 'Calories' with a capital C. The tool converts between both units.

How do I convert kWh to joules?

Enter the value in kilowatt-hours and the joule equivalent appears instantly. One kWh equals 3,600,000 joules.

What is BTU used for?

BTU (British Thermal Unit) is commonly used for heating and cooling systems in the US. One BTU is approximately 1,055 joules.

Are the conversions precise?

Yes. All conversions use exact or internationally agreed-upon conversion factors with high precision for scientific and engineering accuracy.

Tools Converter ToolsEnergy Converter

Energy Converter

Convert between joules, calories, BTU, kWh

Value

From

0.239006Calorie

How to Use

Step 1

Enter Value

Type the value you want to convert in the input field

Step 2

Select Units

Choose the source and target units for your conversion

Step 3

See Conversion

The converted result appears instantly as you type

Step 4

Copy Result

Copy the converted value to use it in your work

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Learn More

What Is Energy Converter?

Energy Converter is a free online tool that converts between different units of energy and power. Convert joules, calories, watt-hours, BTU, and more with instant precision.

Key Features

Convert between all common energy units. Real-time conversion as you type. Includes food calories and electrical units. High-precision scientific calculations. Clear display of all equivalent values.

Benefits

Understand energy consumption across different measurement systems. Compare energy values from nutritional, electrical, and thermal contexts. Essential for physics, engineering, and energy planning.

Use Cases

Convert food calories for nutrition tracking. Calculate electricity costs by converting kWh. Compare heating system BTU ratings. Physics and chemistry energy calculations.

Tips for Best Results

Remember that food Calories are actually kilocalories. One kWh powers a 100W bulb for 10 hours. For electricity cost calculations, multiply kWh by your local rate per unit.