Steam ID Converter
Paste a numeric Steam identifier to see the equivalent public individual-account formats. Conversion runs entirely in your browser using integer arithmetic, so long IDs retain every digit. This tool converts the format; it does not look up a person or verify that an account exists.
Calculations run locally in your browser. This tool does not upload your inputs. Shared links contain the calculator settings you choose to share; Steam IDs are excluded.
How to use it
Paste a SteamID64, STEAM_0:Y:Z or STEAM_1:Y:Z value, [U:1:account] value, account ID, or numeric steamcommunity.com/profiles/ link. Select Convert, then copy the results if needed.
How it works
For public individual desktop accounts, SteamID64 = 76561197960265728 + account ID. SteamID2 uses Y = account ID modulo 2 and Z = floor(account ID / 2). SteamID3 is [U:1:account ID]. All identifier arithmetic uses BigInt.
Limitations
Only public individual desktop accounts with account IDs from 1 to 4294967295 are supported. Clan, server, other-universe and special-instance IDs are rejected. Vanity profile names need an external lookup and are not resolved here.
Frequently asked questions
Can I convert a /id/name/ URL?
No. A vanity name cannot be converted mathematically. Use a numeric profile URL or an existing numeric Steam ID.
Does a valid conversion prove the account exists?
No. The tool validates supported identifier formats and ranges without contacting Steam.
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