Energy & Electrical

Energy & Work Converter

Energy is the capacity to do work, in joules. The kilowatt-hour is used for electricity, the kilocalorie for food and HVAC, and BTU for heating and cooling.

Smart input

Examples:2500 meters to kilometers 50 psi to bar 100 fahrenheit to celsius

Popular conversions

JouleKilojoule Kilowatt-hourJoule Kilowatt-hourKilocalorie CalorieJoule KilocalorieKilojoule British Thermal UnitJoule Kilowatt-hourBritish Thermal Unit ElectronvoltJoule

—

Decimal precision Scientific notation

Quick values:

From

To

Conversion formula

The exact formula applied:

—

About this category: Energy & Work

Energy is the capacity to do work, in joules. The kilowatt-hour is used for electricity, the kilocalorie for food and HVAC, and BTU for heating and cooling.

Energy is measured in joules; kilowatt-hours for electricity, kilocalories for food/HVAC and BTU for heating/cooling.

Practical uses

Electricity bills and consumption (kWh)
Food energy values (kcal)
Heating and cooling systems (BTU)

Available units

Unit	Name	Definition	Classification
J	Joule	The SI base unit of energy.	SI Derived
kJ	Kilojoule	One thousand joules.	SI Derived
MJ	Megajoule	One million joules.	SI Derived
Wh	Watt-hour	Energy from one watt for one hour.	Accepted with SI
kWh	Kilowatt-hour	The common unit for electricity consumption.	Accepted with SI
cal	Calorie	One calorie = 4.184 joules.	Non-SI
kcal	Kilocalorie	The food calorie = 1000 small calories.	Non-SI
BTU	British Thermal Unit	One BTU = 1055.06 joules.	Non-SI
eV	Electronvolt	A tiny energy unit used in atomic physics.	Accepted with SI
ft·lb	Foot-pound	Work of one pound-force over one foot.	Non-SI