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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...
Glossary
Metal 3D Printing Design Guide

Direct Metal Laser Sintering (DMLS) 3D printing for parts with reduced cost and little waste.

CNC Machining Design Guide

Optimize your designs, reduce machining time, and lower your costs.

Injection Molding Design Guide

Guide for high quality and cost-effective plastic injection molding.

3D Scanners

A white paper to assist in the evaluation of 3D scanning hardware solutions.