U0051

U+0051, commonly written as U+0051 or U0051, is the Unicode code point for the Latin capital letter Q. It is part of the Basic Latin block, and its character is Q. The Unicode name is LATIN CAPITAL LETTER Q. It belongs to the Latin script, with general category Lu (Letter, uppercase) and a left-to-right bidirectional class (L).

The code point has decimal value 81. It maps to the ASCII character Q. In UTF-8 it is encoded as the single byte 0x51; in UTF-16 as 0x0051; in UTF-32 as 0x00000051. There are no combining marks or decomposition for this character, and it has no special numeric value.

Q is used in many languages that employ the Latin alphabet, most prominently English. In text processing and computer encoding, U+0051 is a fundamental, widely supported instance of the ASCII range. The lowercase form is U+0071 (LATIN SMALL LETTER Q), and the character generally preserves its identity across case mappings in ordinary usage.

History and properties: U+0051 has been part of Unicode since the project’s early releases and remains unchanged in current standards. It sits in the Basic Latin block and carries the Latin script, Lu general category, and a left-to-right direction. Its representation is consistent across common encodings such as ASCII, ISO/IEC 8859-1, and UTF-8, reflecting its role as a standard Latin-letter character.