Energy Converter
Convert between joules, calories, kWh and BTU.
About this tool
Convert between energy units used in physics, food energy and electricity billing \u2014 joules, calories, kilowatt-hours and BTU.
Key Features
- Instant two-way conversion
- Wide range of common units
- High-precision result
How to Use
- Enter the value to convert.
- Choose the From and To units.
- Click Convert.
Benefits
- Quick unit conversion without searching for factors
- No ads or account required
Frequently Asked Questions
Food labels use the capital-C 'Calorie,' which is actually a kilocalorie (1,000 small calories) \u2014 this converter's 'kcal' option matches what's printed on nutrition labels, while 'cal' is the smaller physics-textbook unit.