Energy Converter

Convert between units of energy and work.

Energy, Work & Heat Converter

Thermodynamics & Power

Convert between Joules, Kilojoules, Calories, Kilocalories (Dietary Cal), Kilowatt-hours (kWh), and BTUs.

Quick Guide & Formulas

Energy quantifies the capacity to perform work across electrical power grids, mechanical engineering, thermal heating systems, and dietary nutrition. This tool converts between scientific SI Joules, household electricity billing Kilowatt-hours, and dietary nutritional calories.

How to Use This Tool

1Enter the energy quantity in the numeric field.
2Choose the input unit (e.g. Joules, kWh, or Kilocalories).
3Choose the destination energy unit.
4Evaluate the exact mechanical, electrical, or thermal equivalent.

Key Rules & Formulas

1 Kilowatt-hour (kWh) = 3,600,000 Joules (3.6 MJ) = 859.845 kcal
1 Dietary Calorie (kcal) = 4,184 Joules = 4.184 kJ = 3.96567 BTU
1 British Thermal Unit (BTU) = 1,055.06 Joules = 252.164 calories.

Convert Energy

From

How to use the Energy Converter

1.Enter the value you want to convert in the left input field.

2.Select the unit you are converting from in the left dropdown.

3.Select the unit you want to convert to in the right dropdown.

4.The result will appear instantly in the right input field and summary box.

Energy & Power Units

Energy conversion is crucial in physics, nutrition, and electrical engineering.

calories/Kilocalories: Used for food energy.
Joules: The SI unit for work and energy.
Kilowatt-hour (kWh): Used for electricity billing.

Related Conversion Tools

Browse all converters on our Unit Converter Hub, or try specialized tools like our Land Area Converter for Ropani/Bigha,Forex Converter for currency rates, or Color Converter for design work. For binary conversions, check our Text to Binary Converter. Date calculations? Use our Nepali Calendar tools.