What is a MongoDB connection string?

A MongoDB connection string is the URI application code uses to connect to a MongoDB server or cluster. It can include hostnames, ports, authentication details, replica set settings, and query options.

The URI format matters because the same database may require different connection styles depending on whether it uses a standard server, a replica set, or an SRV record.

Tool description

This tool generates a MongoDB connection URI from the settings you provide. Fill in the host information, authentication values, and optional query flags, then copy the final link into your app configuration.

It is useful when you want a connection string without hand-assembling the URI syntax.

Examples

Common outputs:

  • Standard mongodb:// URI for a host and port connection
  • mongodb+srv:// URI for an SRV-based cluster
  • Connection string with replica set and custom query options

Features

  • URI generation: Builds a valid MongoDB connection string from structured inputs
  • SRV support: Switches to the SRV-style scheme when needed
  • Optional flags: Supports TLS, direct connection, retry writes, and custom query parameters

Supported formats

  • mongodb://
  • mongodb+srv://

Limitations

  • At least one host and a database name are required.
  • SRV mode ignores the port field.
  • TLS is disabled automatically when SRV mode is selected.