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Energy Conversions

Convert between 7 different energy units with our free online converter tools. Perfect for engineering, cooking, science, and everyday energy measurements.

7
Total Units
5
Conversion Tools
100%
Free
∞
Conversions

Most Popular Energy Conversions

Calories
Joules
cal → J
Popular
Kilocalories
Kilojoules
kcal → kJ
Popular
Watt Hours
Joules
Wh → J
Popular
Kilowatt Hours
Kilocalories
kWh → kcal
Popular
British Thermal Units
Joules
BTU → J
Popular

All Available Energy Units

Joules

Symbol: J

Base Unit

Also known as:

joules
3 conversion tools available

Kilojoules

Symbol: kJ

Also known as:

kilojoules
1 conversion tools available

Calories

Symbol: cal

Also known as:

calories
1 conversion tools available

Kilocalories

Symbol: kcal

Also known as:

kilocalories food calories
2 conversion tools available

Watt Hours

Symbol: Wh

Also known as:

watt hours
1 conversion tools available

Kilowatt Hours

Symbol: kWh

Also known as:

kilowatt hours
1 conversion tools available

British Thermal Units

Symbol: BTU

Also known as:

british thermal units btu
1 conversion tools available

Related Conversion Categories

📏
Length
10 units
⚖️
Weight
11 units
🌡️
Temperature
4 units
🥄
Volume
7 units
⏰
Time
7 units
💾
Data Size
6 units
📐
Area
9 units
🏃
Speed
5 units

Popular Conversions in Other Categories

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Inch
Centimeter
Hot
Celsius
Fahrenheit
Hot
Pound
Kilogram
Hot
Fahrenheit
Celsius
Hot
Kilogram
Pound
Hot
Centimeter
Inch
Hot
View All Conversions