How do I convert Account ID to SteamID32?

Paste your Account ID into the converter above and the SteamID32 appears instantly. Worked through by hand: It is already the account ID; nothing to do. Y is the account ID modulo 2; Z is the account ID divided by 2, rounded down. For example, 52079950 becomes STEAM_0:0:26039975.

Convert Account ID to SteamID32

Paste a Account ID below to get the SteamID32 straight away. The conversion runs in your browser, so nothing is sent anywhere and there is no sign-in.

Account ID input

SteamID32 appears here

Example: 52079950 converts to STEAM_0:0:26039975

How the conversion works

Both formats describe the same underlying account, so the conversion is arithmetic rather than a lookup. Every Steam identifier is built from one 32-bit account number, and the route from Account ID to SteamID32 goes through it:

Start with the Account ID. It is already the account ID; nothing to do. For 52079950 that gives an account ID of 52079950.
Build the SteamID32. Y is the account ID modulo 2; Z is the account ID divided by 2, rounded down. That produces STEAM_0:0:26039975.

Worked example

Step	Value
Account ID in	`52079950`
Account ID	`52079950`
SteamID64 equivalent	`76561198012345678`
SteamID32 out	`STEAM_0:0:26039975`

What a Account ID is

The bare 32-bit account number underneath every other format. Strip away the base offset and the textual wrapping and this is what remains — the actual identity.

The Dota 2 match history API uses it, several match-history and stats sites key on it, and it is the number shown in a Steam friend invite code. It is also the value you want if you are storing IDs compactly, since it fits in 32 bits.

What a SteamID32 is

The original textual format, written STEAM_X:Y:Z. X is the universe (almost always 0 or 1 for public Steam), Y is the lowest bit of the account ID, and Z is the account ID shifted right by one. Splitting the number this way is a quirk of the original implementation, not something meaningful.

Source engine servers and their tooling still live in this format. SourceMod's admins.cfg expects entries like "STEAM_0:1:12345678", most older ban plugins store it, and the SourceBans web panel has historically rejected newer formats outright. If you administer a Counter-Strike, Team Fortress or Garry's Mod server, this is the one you end up needing.

Converting more than one ID

This page handles a single ID at a time. To convert a whole list at once — a ban file, an admin config, a spreadsheet column — use the bulk converter, which accepts mixed formats and custom profile URLs in the same paste.