Energy Converter

Scientific energy unit conversion supporting Joules, Calories, BTU, Watt-hours and more

Energy Input

Enter Energy

From Unit

Standard energy measurement unit

Unit Categories

Quick Set

1 kilojoule

1 kilocalorie (food)

1 kWh (electricity)

1 BTU (heating)

1 therm (gas)

Conversion Results

(10 units)

Enter a value to see conversions

Start by entering an energy value above

How to Use the Energy Converter

Scientific, accurate 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

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.