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watt
Symbol:  W 
Category:  Power (Heat flow) 
SI Equivalent:  1 W
Dimension ML2T-3 
System:  SI 
 
Notes
Named in honor of the Scottish inventor James Watt (1736-1819), the watt is the unit of power in the SI system. It is equal to 1 joule of work produced per second.
Convert     W  
34 conversions, showing those commonly used | Show all
1 W =
Power (Heat flow)
  Symbol Unit Name
3.41214  Btu (IT)/h  British thermal unit (IT) per hour 
9.47817×10-4  Btu (IT)/s  British thermal unit (IT) per second 
9.48452×10-4  Btu (therm.)/s  British thermal unit (therm.) per second 
859.858  cal (IT)/h  calorie (IT) per hour 
0.238849  cal (IT)/s  calorie (IT) per second 
616.438  cal (therm.)/h  calorie (therm.) per hour 
0.239006  cal (therm.)/s  calorie (therm.) per second 
10×106  erg/s  erg per second 
2655.22  ft-lbf/h  foot-pound force per hour 
0.737562  ft-lbf/s  foot-pound force per second 
1.34102×10-3  HP  horsepower (550 ft-lbf/s) 
1.35962×10-3  cv, HP  horsepower (cheval-vapeur) 
1.35962×10-3  HP  horsepower (metric) 
1.34041×10-3  HP  horsepower (water) 
0.101972  kgf-m/s  kilogram force-meter per second 
1×10-3  kW  kilowatt 
2.54927×10-4  CTR (UK)  ton (refrigeration, UK) 
2.84349×10-4  CTR (US)  ton (refrigeration, US) 
VA  volt-ampere 
0.99981  W  watt (int. mean) 
0.999835  W  watt (int. US) 
more...
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