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Unit systemSI derived unit
Unit ofEnergy
Named afterJames Prescott Joule
1 J in ...... is equal to ...
   SI base units   1 kg·m2/s2
   CGS units   1×107 erg
   kilowatt hours   2.78×10−7 kW⋅h
   kilocalories   2.39×10−4 kcal
   BTUs   9.48×10−4 BTU
   electronvolts   6.24×1018 eV

A joule (/ˈl/ or sometimes /ˈl/) is a unit in the SI system. It measures energy; usually in scientific or electrical appliances . It is named after James Prescott Joule.

A joule equals one newton multiplied by a metre (1J = 1N × 1m). It is related to the watt (a unit of power): one watt equals one joule per second.

It is also the work done passing one amp through a resistance of one ohm for one second.

To convert 6M J to calories divide those by 4.184