Cycling Watts Calculator
Speed
mph
170
watts
2.5
w/kg
50 mph
0 mph
Gravity
?
0 watts
Grade
%
Rider weight
lbs
Bike weight
lbs
Drag
?
141 watts
basic
Riding position
Tops
Hoods
Drops
Aerobars
Wind
mph
Wheelset
Standard
Aero (e.g., Zipp 303)
Super Aero (e.g., Zipp 808)
Elevation
ft
Rolling Resitance
?
22 watts
basic
Tire
Continental Grand Prix 5000
Continental Gatorskin
Specialized Pathfinder Pro2 Bliss
Vittoria Terreno Dry G+ 2.0
Drivetrain Efficiency
?
7 watts
basic
Chain
Well lubricated
Poorly lubricated
Derailleur pulleys
Steel Bushings
Steel Bearings
Ceramic Bearings
Oversized w/ Ceramic Bearings
Units
Imperial (mph, ft, pounds)
Metric (km/h, m, kg)