Joule

Joule
Unit systemSI derived unit
Unit ofEnergy
SymbolJ 
Named afterJames Prescott Joule
Conversions
1 J in ...... is equal to ...
   SI base units[1]   1 kg·m2/s2
   CGS units[2]   1×107 erg
   kWh[3]   2.78×10−7 kW⋅h
   kcal[4]   2.39×10−4 kcal
   BTU[5]   9.48×10−4 BTU
   eV[6]   6.24×1018 eV

A Joule (J) (/ˈl/ or sometimes /ˈl/) is a unit in the SI system named after English physicist James Prescott Joule.

  1. "Joule (unit) - Knowino". Radboud Universiteit. Retrieved December 1, 2024.
  2. "CGS and SI (MKS) unit systems". University of Southampton. Retrieved December 1, 2024.
  3. "What is a kilowatt hour and the cost of electricity per kWh". British Gas. June 24, 2024. Retrieved December 1, 2024.
  4. "Kilocalories". ScienceDirect. 2012. Retrieved December 1, 2024.
  5. "British thermal unit (Btu)". The US Solar Institute. Retrieved December 1, 2024.
  6. "Electron volt | energy, particles, force". Britannica. October 10, 2024. Retrieved December 1, 2024.

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