Joule

The joule (symbol: J) is the SI unit of energy, or work. It is named in honor of the physicist James Prescott Joule (1818–1889).

Conversions

1 joule is equal to:

~ ~ ~ ~ ~ ~ ~ ~ ~ ~

• 10 000 000 erg (ergs)
• c. 0.239 cal (calorie) (small calories)
• 0.0002390 calorie or kilocalorie (food)
• 4.184 J – 1 thermochemical calorie (exact)
• 4.1868 J – 1 International Table calorie (exact)
• c. 0.000 948 BTU (British thermal unit)
• c. 0.738 ft·lbf (foot pound force)
• c. 23.7 ft·pdl (foot poundals)
• 0.0000002778 kilowatt-hour
• 0.0002778 watt-hour
• 0.0098692 litre-atmosphere
• 1 J – The energy required to lift a small apple (102 g) one metre against Earth's gravity

~ ~ ~ ~ ~ ~ ~ ~ ~ ~