Our patented resistance calculator allows you to personalize your cycling simulation anywhere in the solar system.

Explore the relationship between your cycling power (wattage) and speed. Move your cursor over the graph, or tap on it, to explore specific points. Modify the fields below and the graph will update.

For example: If you apply 20.81 **mph**. If you want to ride at groundspeed velocity **mph**, you must apply 231.43 watts of power.

**Units**: imperial metric

#### Personalized Simulation: Crested Butte's 401 Trail

#### Computational Graph:

#### Air Density Calculator:

This air density calculator lets you estimate one of the parameters used in cycling power models ("rho"). Rho used specifically when estimating aerodynamic drag forces. To calculate, you will need to provide three parameters: air temperature, air pressure, and dew point. You should be able to look up these three parameters for your region from most weather web sites.

**Share Your Parameters With Others:**

(Press the button to copy the sharing URL to the clipboard)

For more information about the assumptions and formulas used, click here.