Connect to MongoDB

    This page outlines how to use MongoDB Compass to connect to a MongoDB host. You can connect to a standalone, replica set, or sharded cluster host.

    MongoDB Atlas

    If you need to create a MongoDB host, consider using MongoDB Atlas. Atlas is a cloud-hosted database-as-a-service which requires no installation, offers a free tier to get started, and provides a copyable URI to easily connect Compass to your deployment.

    If you need to install Compass, see Download and Install Compass for instructions.

    • When connecting Compass to a replica set, it is not recommended to connect directly to an individual replica set member. If the member to which you are connected switches from a primary member to a secondary or vice versa as the result of an election, Compass may either forcibly close the connection or display stale data.

      Instead, to connect to a replica set, use either the replica set SRV record or Replica Set Name when filling in your connection information.

    • Starting in MongoDB Compass 1.19, Compass displays a warning message when connected to non-genuine MongoDB instances as these instances may behave differently from the official MongoDB instances; e.g. missing or incomplete features, different feature behaviors, etc.

    When you open Compass, an initial connection dialog appears:

    Connection dialog for pasting your connection string

    Compass provides two methods to connect to your deployment, either providing your deployment connection string or filling in your deployment information in specific fields.

    When you provide a connection string, Compass supports most Connection String Options supported by MongoDB.

    By default, Compass's default socketTimeoutMS value is 60000, or 60 seconds. If you are frequently experiencing timeouts in Compass, consider setting this option to a higher value in your connection string.

    For a complete list of the connection string options which Compass supports, see the Compass Connection README on GitHub.


    If you have the connection string for your deployment available, you can paste the string directly into the dialog box. You can use either the Standard Connection String Format or the DNS Seedlist Connection Format.

    • To obtain the connection string for an Atlas cluster:

      1. Navigate to your Atlas Clusters view.
      2. Click Connect for your desired cluster.
      3. Click Connect with MongoDB Compass.
      4. Copy the provided connection string.
    • To learn how to format the connection string for a deployment which is not hosted on Atlas, see Connection String URI Format.

    Click the Connect button to navigate to the Compass Home Page.

    Required Access

    Once you are connected to your MongoDB deployment, you may require specific user roles to access various Compass features. For more information on the required roles for Compass features, see Required Access.


    MongoDB Compass securely stores sensitive information entered in the connection form using an API that is specific to your operating system.

    For more information on how Compass handles sensitive data, refer to the FAQ page.

    Disconnect menu item

    Disconnecting from a MongoDB instance closes the Compass connection to the active instance and returns the Compass view to the initial connection dialog.

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