Energy Converter
Energy conversion is crucial for comparing fuel sources, calculating nutritional calories, understanding electricity bills, and engineering calculations. Our converter handles joules, calories, kilowatt-hours, BTUs, and more.
Result
1 kcal = 4.184 kJ
Popular energy conversions
- Kilocalorie to Kilojoule converter
- Kilojoule to Kilocalorie converter
- Kilowatt Hour to Kilojoule converter
- Kilojoule to Kilowatt Hour converter
- British Thermal Unit to Joule converter
- Joule to British Thermal Unit converter
What is a energy converter?
Energy is the capacity to do work. The SI unit is the joule, but other units like calories, kilowatt-hours, and BTUs are widely used in specific fields. Understanding energy conversions helps in nutrition, engineering, and environmental science.
Common uses for energy conversion
- Nutrition — Converting between calories and kilojoules on food labels
- Electricity — Converting kilowatt-hours for energy bills and solar panel output
- Engineering — Comparing energy content of different fuels using BTUs and joules
- HVAC — Calculating heating and cooling loads in BTUs
- Physics — Working with joules, electron-volts, and ergs in scientific calculations
All energy units
- Joule (J)
- Kilojoule (kJ)
- Calorie (cal)
- Kilocalorie (kcal)
- Watt Hour (Wh)
- Kilowatt Hour (kWh)
- Electronvolt (eV)
- British Thermal Unit (BTU)
- Therm (thm)
Tips for energy conversion
- 1 calorie (food) = 4.184 kilojoules — food "calories" are actually kilocalories
- 1 kWh = 3,600,000 joules = 3,412 BTU
- A BTU is the energy needed to raise 1 pound of water by 1°F
Frequently asked questions
What is a energy converter?
A energy converter is a tool that allows you to convert between different energy units instantly. It supports conversions between 9 different units including Joule, Kilojoule, Calorie, Kilocalorie, Watt Hour, and more.
How do I convert energy units?
To convert energy units, simply enter the value you want to convert, select the source unit (from), and select the target unit (to). The converter will instantly calculate and display the result with high precision.
What energy units are available for conversion?
Our energy converter supports 9 units including: Joule (J), Kilojoule (kJ), Calorie (cal), Kilocalorie (kcal), Watt Hour (Wh), Kilowatt Hour (kWh), Electronvolt (eV), British Thermal Unit (BTU), Therm (thm).
Is this energy converter accurate?
Yes, our energy converter uses precise conversion factors and formulas to ensure accurate results. All calculations are performed instantly in your browser for fast, reliable conversions.
Can I convert energy on mobile devices?
Absolutely! Our energy converter is fully responsive and works on all devices including smartphones, tablets, and desktop computers. No app download required.
What is the difference between calories and kilocalories?
One kilocalorie (kcal) equals 1,000 calories. In nutrition, when we refer to "Calories" (with capital C), we actually mean kilocalories. So a food item with 100 Calories contains 100 kcal or 100,000 small calories.