How do I convert SteamID32 to SteamID64?

Paste your SteamID32 into the converter above and the SteamID64 appears instantly. Worked through by hand: Multiply Z by 2, then add Y. That gives the account ID back. Add 76561197960265728 to the account ID. For example, STEAM_0:0:26039975 becomes 76561198012345678.

Convert SteamID32 to SteamID64

Paste a SteamID32 below to get the SteamID64 straight away. The conversion runs in your browser, so nothing is sent anywhere and there is no sign-in.

SteamID32 input

SteamID64 appears here

Example: STEAM_0:0:26039975 converts to 76561198012345678

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 SteamID32 to SteamID64 goes through it:

Start with the SteamID32. Multiply Z by 2, then add Y. That gives the account ID back. For STEAM_0:0:26039975 that gives an account ID of 52079950.
Build the SteamID64. Add 76561197960265728 to the account ID. That produces 76561198012345678.

Worked example

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

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.

What a SteamID64 is

A 17-digit number and the format Steam itself uses everywhere internally. It is the account ID added to a fixed base of 76561197960265728, which is why every individual account's SteamID64 starts with 7656119.

Every endpoint of the Steam Web API takes this format, and it is what you see in a profile URL of the form steamcommunity.com/profiles/76561198012345678. If you are writing anything that talks to Steam programmatically, this is the format you store.

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.