Plan Unicode

Encoding & Standards

Groupe de 65 536 points de code Unicode consécutifs. Le plan 0 est le plan multilingue de base (BMP) ; la plupart des emoji se trouvent dans le plan 1 (SMP).

Unicode divides its 1,114,112 code points into 17 planes of 65,536 code points each (Planes 0 through 16). The first plane, Plane 0 (U+0000 to U+FFFF), is the Basic Multilingual Plane (BMP) containing most common scripts.

Plane 1 (U+10000 to U+1FFFF) is the Supplementary Multilingual Plane (SMP), where most emoji are allocated. Planes 2 and beyond contain supplementary CJK characters and reserved space.

The BMP/SMP distinction matters because characters in the BMP can be represented with a single UTF-16 code unit, while SMP characters (including emoji) require surrogate pairs.

Termes associés

Paire de substituts Paire de substituts
Deux unités de code UTF-16 (un substitut haut U+D800–U+DBFF suivi d'un substitut bas U+DC00–U+DFFF) qui représentent ensemble un caractère au-delà de U+FFFF. Plan multilingue supplémentaire (SMP) Plan multilingue supplémentaire (SMP)
Le plan 1 d'Unicode (U+10000 à U+1FFFF), où sont alloués la majorité des points de code emoji. Point de code Point de code
Valeur numérique unique attribuée à chaque caractère dans la norme Unicode, écrite au format U+XXXX (par exemple, U+1F600 pour 😀).

Outils associés

🔢 Recherche Unicode Recherche Unicode
Saisissez un point de code comme U+1F600 et obtenez l'emoji, les détails d'encodage, les octets UTF-8/16 et les entités HTML.

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