# Energy Converter

> Convert between joules, kilojoules, calories, kilocalories (food Calories), watt-hours, kilowatt-hours, and BTU. Disambiguates cal vs kcal clearly.

**URL:** https://www.calculatoranswers.com/energy-converter
**Category:** Converters

## Quick Answer

Convert energy, work, and heat values between scientific and consumer units. Enter the value and select units to calculate conversions across joules, calories, BTUs, and kilowatt-hours.

## Definition

An energy converter is a scientific measurement utility that translates work, heat, and energy values between different unit systems. This one supports seven units: joules, kilojoules, calories, kilocalories (the food Calorie), watt-hours, kilowatt-hours, and the IT British thermal unit. Every pair is converted through the joule, and the two factors that are not powers of ten are stated rather than approximated: the thermochemical calorie is exactly 4.184 J and the IT BTU is exactly 1055.05585262 J. Physics students, engineers, nutritionists, HVAC technicians, and electricians use this tool to standardize energy, heat transfer, and electricity consumption measurements across different fields.

## How to Use

1. **Enter energy value** — Type the numerical work or energy value you want to convert.
2. **Select original unit** — Choose the measurement unit you are starting with from the options.
3. **Read converted values** — View the equivalent energy in joules, calories, kilowatt-hours, and British thermal units.

## Disclaimer

This calculator provides estimates for educational and planning purposes. Always consult a qualified professional for specific advice on financial, medical, legal, or other regulated decisions.

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