Joule

J

SI derived unit of energy

About Joule (J)

The SI derived unit of energy, one joule equals the work done by a force of one newton moving an object one meter. Named after James Prescott Joule, who demonstrated the mechanical equivalent of heat, the joule is used in physics, chemistry, and engineering for all forms of energy, work, and heat.

Category
Energy
Symbol
J
Also known as
joules
01

CONVERT TO

Kilojoule kJ Megajoule MJ Calorie (thermochemical) cal Kilocalorie kcal Watt-hour Wh Kilowatt-hour kWh British Thermal Unit BTU Electronvolt eV Therm thm Foot-pound ft·lbf

Frequently Asked Questions

What is a Joule (J)?

SI derived unit of energy

How many Calorie (thermochemical) (cal) are in one Joule (J)?

One Joule (J) equals 0.239006 Calorie (thermochemical) (cal).

How many Kilocalorie (kcal) are in one Joule (J)?

One Joule (J) equals 0.0002390057 Kilocalorie (kcal).

How many Kilowatt-hour (kWh) are in one Joule (J)?

One Joule (J) equals 2.777778 × 10⁻⁷ Kilowatt-hour (kWh).

How do I convert Joule to Calorie (thermochemical)?

To convert Joule to Calorie (thermochemical), multiply the value by 0.239006 (1 J = 0.239006 cal).