STEAMID I/O lookup and convert your steamID, steamID3, steamID64, customURL and community id

input 76561198115912921 interpreted as steamID64 anchor
steamID
copy to clipboard STEAM_0:1:77823596
steamID3
copy to clipboard [U:1:155647193]
steamID64
copy to clipboard 76561198115912921
profile
view on Steamcommunity.com http://steamcommunity.com/profiles/76561198115912921
add friend