# Calibrating Your Trainer in Zwift

> Most smart trainers don't require a manual in-game calibration. Different trainers use different calibration methods. Before you perform a manual calibration...

Source: https://support.zwift.com/en_us/calibrating-your-trainer-in-zwift-ByUaXPoi9

Last updated: 2026-07-21T21:34:41.393Z

# Calibrating Your Trainer in Zwift

Most smart trainers don't require a manual in-game calibration. Different trainers use different calibration methods. Before you perform a manual calibration, determine which method your trainer uses. Depending on your trainer, you may:

*   not need to perform a manual calibration because it calibrates automatically while you ride.
    
*   need to calibrate using your trainer manufacturer's app.
    
*   be able to perform a manual calibration in Zwift.
    

If you're unsure which method your trainer uses, refer to your trainer manufacturer's documentation.

## Things to Know

*   The calibration icon is only displayed for trainers that support manual in-game calibration.
    

## Auto Calibration

If your trainer supports auto calibration, you don't need to perform a manual calibration. Auto calibration occurs while you ride in Zwift when all of the following conditions are met:

*   You've been riding for more than 1 minute.
    
*   You reach a speed of at least 15 kph (10 mph).
    
*   You then coast for at least 5 seconds.
    
*   You're not riding in ERG mode.
    

If these conditions aren't met, automatic calibration won't occur until they're met during a ride.

## Performing a Manual In-Game Calibration Spindown

If your trainer supports manual in-game calibration, follow these steps:

1.  Open Zwift and sign in.
2.  Connect your trainer and complete a ride of at least 10 minutes to warm it up.
    
3.  End your ride and return to the **PAIRED DEVICES** screen.
    
4.  Look for the calibration icon next to the **POWER SOURCE** tile.
    
    Show image
    
    ![Select the Calibration Icon](https://content-cdn.zwift.com/support/EN/Cycling/Resources/Images/1.50%20Cycling%20Paired%20Devices%20-%20Calibrate.jpg "Select the Calibration Icon")
    
    1.  If the calibration icon is available, select it.
        
    2.  If the calibration icon isn't displayed, manual in-game calibration isn't available for your trainer. Refer to your trainer manufacturer's documentation to determine whether your trainer calibrates automatically or requires calibration using the manufacturer's app.
        
5.  In the **CALIBRATE SPINDOWN** window, select **NEXT**.
6.  Follow the on-screen instructions to complete the calibration.
7.  When the **CALIBRATE SPINDOWN** window displays **SUCCESS!**, select **OK**, or wait for the window to close automatically.
    
    Show image
    
    ![Calibration successful](https://content-cdn.zwift.com/support/EN/Cycling/Resources/Images/Calibration%20Success.png "Calibration Successful")
    

## Related Articles

*   [Compatible Cycling Hardware](https://support.zwift.com/en_us/compatible-cycling-hardware-BkPlq7gr)
    
*   [Zwift Ready and Zwift Cog Compatible Trainers](https://support.zwift.com/en_us/zwift-ready-and-zwift-cog-compatible-trainers-r1x1sNas0)
    
*   [Connecting Your Devices for Cycling](https://support.zwift.com/en_us/connecting-your-devices-for-cycling-HJIFDrw5S)
    
*   [ERG Mode in Workouts](https://support.zwift.com/en_us/erg-mode-in-workouts-SkQJC8OEH)
    

Ride On.

\-The Team at Zwift