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How to find a Steam App ID

Three reliable ways to find the App ID for any Steam game, with screenshots in text form.

Last updated: 2026-06-29

A Steam App ID is the unique 6–7 digit number Valve assigns to every game, DLC, and tool on Steam. SteamTools needs exactly that number — not the game's name, not its store URL, not its SteamDB page slug. This page lists the three reliable ways to find it, in the order most people should try them.

Method 1: from the store URL (fastest)

Open the game's store page in your browser. The URL looks like this:

https://store.steampowered.com/app/400/Portal/

The number between /app/ and the next slash is the App ID. In the example above it is 400. That is the only number you need.

The same pattern works for DLC and tools:

https://store.steampowered.com/app/12345/DLC_Name/    -> 12345
https://store.steampowered.com/app/67890/Tool_Name/   -> 67890

If the URL has a query string after the slug, ignore the query string. The App ID is always the bare integer between /app/ and the next /.

Method 2: from SteamDB (most reliable)

When the store URL is not available — common for delisted, unreleased, or region-locked apps — go to SteamDB and search for the game by name. The SteamDB app page shows four numbers near the top:

  • App ID — what you want.
  • Package ID — different. The package is the commercial bundle.
  • Depot ID — different. The depot is a build artifact.
  • Build ID — different. The build is a specific version.

The fastest way to be sure: look at the canonical store URL SteamDB links to at the top of the page. The number in store.steampowered.com/app/<NUMBER>/... is the App ID.

Method 3: from your local Steam install (offline)

If you have ever launched the game through Steam, the App ID is sitting on your disk:

  • macOS: ~/Library/Application Support/Steam/steamapps/
  • Linux: ~/.steam/steam/steamapps/
  • Windows: C:\Program Files (x86)\Steam\steamapps\

Each installed game has a folder named appmanifest_<APPID>.acf. The number in the filename is the App ID. So:

  • appmanifest_400.acf -> 400 (Portal)
  • appmanifest_620.acf -> 620 (Portal 2)
  • appmanifest_12345.acf -> 12345 (whatever the game is)

The fastest way on any platform: open the folder above and grep for the game's name. The first match will be in the name field of the file whose filename starts with appmanifest_.

What "App ID" is not

There are a few numbers that look like the App ID but are not. SteamTools will reject them.

  • Steam package IDs start at 1 and can be 4–6 digits. They identify a commercial bundle, not an app. The store URL for a package is /sub/<id>/, not /app/<id>/.
  • Depot IDs are 6–7 digit numbers that identify a build artifact. The store URL for a depot does not exist; you find depots in SteamDB under the "Depots" tab.
  • Build IDs are 8–10 digit numbers that change every time Valve uploads a new build. The build ID is in SteamDB under the "Builds" tab.
  • Workshop IDs are for Workshop content and have their own namespace. SteamTools does not use Workshop IDs.

If you paste any of those numbers into the generator, you will get a clean "App not found in the Steam store" error. That is the generator telling you the number you gave it does not map to an App ID.

What to do if the number is right but the generator rejects it

Three things can cause that:

  1. The number is for a delisted app. SteamDB keeps the record, but appdetails no longer returns it. SteamTools cannot work on delisted apps; the upstream tool does not have the manifest either.
  2. The number is for an app only available in a specific region. The generator currently queries cc=us. If you are trying to look up a game only sold in, say, the Japanese store, the appdetails call will return empty. Drop a note in the Discord and we will add the missing region.
  3. You typed a leading zero, a trailing space, or a number formatted with a thousands separator. App IDs are bare integers, 1 to 4,294,967,295, with no formatting. Paste the digits only.

Still stuck?