Energy Converter
Scientific energy unit conversion supporting Joules, Calories, BTU, Watt-hours and more
Energy Input
Common energy unit
Unit Categories
Quick Set
Conversion Results
(10 units)Enter a value to see conversions
Start by entering an energy value above
How to Use the Energy Converter
Scientific energy conversions for physics, nutrition, and engineering applications
Enter Energy
Input the energy value you want to convert
Select Unit
Choose from scientific, nutrition, or thermal units
View Results
See instant conversions to all energy units
Copy & Use
Copy results for research and calculations
Energy Units by Application
Explore energy units organized by scientific and practical applications
Metric
- Megajoule (MJ)
- Kilojoule (kJ)
- Joule (J)
Nutrition
- Kilocalorie (kcal)
- Calorie (cal)
Food energy and metabolism
Electrical
- Kilowatt Hour (kWh)
- Watt Hour (Wh)
Electricity billing and storage
Thermal
- Therm (therm)
- BTU (btu)
Heating and natural gas
Scientific
- Electron Volt (eV)
Atomic and particle physics
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Use Tool →Professional Energy Converter
Scientific, accurate energy conversions for physics, nutrition, and engineering applications. Support all major energy units with professional-grade precision.
Instant Results
Real-time conversion to all supported units
Scientific Grade
Professional accuracy for research applications
Multiple Applications
Physics, nutrition, and thermal systems
Perfect For
Physics & engineering research
Nutrition & fitness tracking
Energy efficiency analysis
Frequently Asked Questions
Which energy units are supported?
Our converter supports all major energy units including Joules, calories, BTU, kWh, and more. Perfect for physics, nutrition, electrical, and thermal applications.
What's the difference between calories and Calories?
Small calorie (cal) is the scientific unit, while large Calorie (Cal or kcal) is used in nutrition. 1 Calorie = 1,000 calories. Our converter uses kcal for food energy calculations.
How accurate are the energy conversions?
All conversions use scientifically precise conversion factors with high accuracy. Perfect for academic research, engineering calculations, and professional applications.
Can I use this for electricity bill calculations?
Yes! Convert between kWh (kilowatt-hours), Joules, and other units for understanding electricity consumption and comparing energy costs across different sources.
Is this suitable for nutrition tracking?
Absolutely! Convert between kilocalories, Joules, and other energy units for dietary tracking, fitness calculations, and metabolic research applications.
What about very large energy values?
Our converter handles both microscopic (electron volts) and macroscopic (megajoules) energy values with scientific notation for extremely large or small measurements.