Convert SteamID64 to SteamID3
Paste a SteamID64 below to get the SteamID3 straight away. The conversion runs in your browser, so nothing is sent anywhere and there is no sign-in.
Example: 76561198012345678 converts to [U:1:52079950]
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 SteamID64 to SteamID3 goes through it:
- Start with the SteamID64. Subtract 76561197960265728 to get the account ID. For
76561198012345678that gives an account ID of52079950. - Build the SteamID3. Wrap the account ID as [U:1:accountID]. That produces
[U:1:52079950].
Worked example
| Step | Value |
|---|---|
| SteamID64 in | 76561198012345678 |
| Account ID | 52079950 |
| SteamID64 equivalent | 76561198012345678 |
| SteamID3 out | [U:1:52079950] |
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.
What a SteamID3 is
The current textual format, written [U:1:X], where U marks an individual user, 1 is the universe, and X is simply the account ID with no bit-splitting. It is the cleanest of the textual formats because X is the raw number.
Modern Source and Source 2 servers report this in the console status output, CS2 demo files use it, and newer SourceMod builds emit it. If you copied an ID out of a server console in the last few years, it almost certainly looked like this.
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.