Open Steam and go to your profile
Click your profile name in the top menu
Copy the profile URL from the address bar
If the URL shows a custom name, use a SteamID lookup tool to convert it
In Steam, enable the Developer Console in Settings if needed
Open the console and use the appropriate command to view your SteamID
In-game, open the player list or scoreboard if the game shows SteamID
Check your Steam profile page source or account details if the site displays your SteamID
Use a third-party SteamID finder by entering your profile URL, custom URL, or username