This tool helps you calculate your estimated time to climb the Alpe du Zwift based on your power output and weight.

## How to Use the Alpe du Zwift Calculator

This calculator helps you estimate the time it would take to climb Alpe du Zwift based on several input parameters:

**Weight:**Your body weight in kilograms.**Bike Weight:**The weight of your bike in kilograms.**Average Power:**Your average power output in watts.**Coefficient of Drag Area (CdA):**A measure of your aerodynamic resistance.**Coefficient of Rolling Resistance (Crr):**A measure of your rolling resistance.**Wind Speed:**The speed of the wind in meters per second.**Air Density:**The density of the air in kilograms per cubic meter.**Grade:**The average gradient of the climb in percent.

Simply enter your details and click “Calculate” to see your estimated average speed and climb time.

## Calculation Details and Limitations

The calculator uses the following formula:

- Considers the sum of user and bike weight.
- Accounts for aerodynamic drag, rolling resistance, and slope.
- Estimates speed based on the balance of forces acting on the rider.

**Limitations:**

- Assumes constant average power output.
- Does not change variables dynamically during different segments of the climb.
- Wind speed is assumed to be constant and coming head-on.