Units Currencies
Units Home
Unit Conversion
List Units
List Categories
Convert Units
SI System
Base Units
Derived Units
Time / Decimal
Autonomous Vehicle Engineering

The No. 1 media source for those developing the next generation mobility solutions.

Negotiate Your Salary

Learn the best principles to negotiate the salary you deserve!

World Pumps

Major news, innovation and real-life applications for pumps and ancillary equipment.

Metal 3D Printing Design Guide

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

more free magazines
watt (int. US)
Symbol:  W 
Category:  Power (Heat flow) 
SI Equivalent:  1.00016 W
Dimension ML2T-3 
System:  US 
Convert     W  
34 conversions, showing those commonly used | Show all
1 W =
Power (Heat flow)
  Symbol Unit Name
3.4127  Btu (IT)/h  British thermal unit (IT) per hour 
9.47973×10-4  Btu (IT)/s  British thermal unit (IT) per second 
9.48608×10-4  Btu (therm.)/s  British thermal unit (therm.) per second 
859.999  cal (IT)/h  calorie (IT) per hour 
0.238889  cal (IT)/s  calorie (IT) per second 
616.54  cal (therm.)/h  calorie (therm.) per hour 
0.239045  cal (therm.)/s  calorie (therm.) per second 
1.00016×107  erg/s  erg per second 
2655.66  ft-lbf/h  foot-pound force per hour 
0.737684  ft-lbf/s  foot-pound force per second 
1.34124×10-3  HP  horsepower (550 ft-lbf/s) 
1.35985×10-3  cv, HP  horsepower (cheval-vapeur) 
1.35985×10-3  HP  horsepower (metric) 
1.34063×10-3  HP  horsepower (water) 
0.101988  kgf-m/s  kilogram force-meter per second 
1.00016×10-3  kW  kilowatt 
2.54969×10-4  CTR (UK)  ton (refrigeration, UK) 
2.84396×10-4  CTR (US)  ton (refrigeration, US) 
1.00016  VA  volt-ampere 
1.00016  W  watt 
0.999975  W  watt (int. mean)