What is a Joule (J)?

A joule (J) is the SI unit of energy, equal to the work done by a force of one newton over a distance of one meter.

Definition

Symbol

J

Category

Energy

System

SI

1 {unit} = {value} {otherUnit}

1 Joule = 0.001 Kilojoule (kJ)

1 Joule = 0.239006 Calorie (cal)

1 Joule = 0.000239006 Kilocalorie (kcal)

1 Joule = 0.000277778 Watt-hour (Wh)

1 Joule = 2.77778e-7 Kilowatt-hour (kWh)

Common Uses

  • Physics calculations
  • Electrical energy
  • Food energy content

Joule Conversions

Related Units