U+0023 Number Sign
U+0023 was added in Unicode version 1.1 in 1993. It belongs to the block Basic Latin in the Basic Multilingual Plane.
This character is a Other Punctuation and is commonly used, that is, in no specific script. The character is also known as pound sign (weight), hashtag, hash, crosshatch and octothorpe.
The glyph is not a composition. Its East Asian Width is narrow. In bidirectional text it is written as end of a European number, e.g., a currency symbol, from left to right. When changing direction it is not mirrored. The word that U+0023 forms with similar adjacent characters prevents a line break inside it.
The CLDR project calls this character “hash sign” for use in screen reading software. It assigns these additional labels, e.g. for search in emoji pickers: hash, hashtag, lb, number, pound, sign.
This character is designated as an emoji. It will be rendered as monochrome character on conforming platforms. To enable colorful emoji display, you can combine it with Variation Selector-16: #️ See the Emojipedia for more details on this character’s emoji properties.
Representations
| System | Representation (click value to copy) |
|---|---|
| Nº | |
| UTF-8 | |
| UTF-16 | |
| UTF-32 | |
| URL-Quoted | |
| HTML hex reference | |
| HTML named entity | |
| alias | |
| alias | |
| alias | |
| alias | |
| alias | |
| Encoding: ASCII (hex bytes) | |
| Encoding: BIG5 (hex bytes) | |
| Encoding: BIG5HKSCS (hex bytes) | |
| Encoding: CP037 (hex bytes) | |
| Encoding: CP273 (hex bytes) | |
| Encoding: CP424 (hex bytes) | |
| Encoding: CP437 (hex bytes) | |
| Encoding: CP500 (hex bytes) | |
| Encoding: CP720 (hex bytes) | |
| Encoding: CP737 (hex bytes) | |
| Encoding: CP775 (hex bytes) | |
| Encoding: CP850 (hex bytes) | |
| Encoding: CP852 (hex bytes) | |
| Encoding: CP855 (hex bytes) | |
| Encoding: CP856 (hex bytes) | |
| Encoding: CP857 (hex bytes) | |
| Encoding: CP858 (hex bytes) | |
| Encoding: CP860 (hex bytes) | |
| Encoding: CP861 (hex bytes) | |
| Encoding: CP862 (hex bytes) | |
| Encoding: CP863 (hex bytes) | |
| Encoding: CP864 (hex bytes) | |
| Encoding: CP865 (hex bytes) | |
| Encoding: CP866 (hex bytes) | |
| Encoding: CP869 (hex bytes) | |
| Encoding: CP874 (hex bytes) | |
| Encoding: CP875 (hex bytes) | |
| Encoding: CP932 (hex bytes) | |
| Encoding: CP949 (hex bytes) | |
| Encoding: CP950 (hex bytes) | |
| Encoding: CP1006 (hex bytes) | |
| Encoding: CP1026 (hex bytes) | |
| Encoding: CP1125 (hex bytes) | |
| Encoding: CP1140 (hex bytes) | |
| Encoding: CP1250 (hex bytes) | |
| Encoding: CP1251 (hex bytes) | |
| Encoding: CP1252 (hex bytes) | |
| Encoding: CP1253 (hex bytes) | |
| Encoding: CP1254 (hex bytes) | |
| Encoding: CP1255 (hex bytes) | |
| Encoding: CP1256 (hex bytes) | |
| Encoding: CP1257 (hex bytes) | |
| Encoding: CP1258 (hex bytes) | |
| Encoding: EUC_JP (hex bytes) | |
| Encoding: EUC_JIS_2004 (hex bytes) | |
| Encoding: EUC_JISX0213 (hex bytes) | |
| Encoding: EUC_KR (hex bytes) | |
| Encoding: GB2312 (hex bytes) | |
| Encoding: GBK (hex bytes) | |
| Encoding: GB18030 (hex bytes) | |
| Encoding: HZ (hex bytes) | |
| Encoding: ISO2022_JP (hex bytes) | |
| Encoding: ISO2022_JP_1 (hex bytes) | |
| Encoding: ISO2022_JP_2 (hex bytes) | |
| Encoding: ISO2022_JP_2004 (hex bytes) | |
| Encoding: ISO2022_JP_3 (hex bytes) | |
| Encoding: ISO2022_JP_EXT (hex bytes) | |
| Encoding: ISO2022_KR (hex bytes) | |
| Encoding: LATIN_1 (hex bytes) | |
| Encoding: ISO8859_2 (hex bytes) | |
| Encoding: ISO8859_3 (hex bytes) | |
| Encoding: ISO8859_4 (hex bytes) | |
| Encoding: ISO8859_5 (hex bytes) | |
| Encoding: ISO8859_6 (hex bytes) | |
| Encoding: ISO8859_7 (hex bytes) | |
| Encoding: ISO8859_8 (hex bytes) | |
| Encoding: ISO8859_9 (hex bytes) | |
| Encoding: ISO8859_10 (hex bytes) | |
| Encoding: ISO8859_11 (hex bytes) | |
| Encoding: ISO8859_13 (hex bytes) | |
| Encoding: ISO8859_14 (hex bytes) | |
| Encoding: ISO8859_15 (hex bytes) | |
| Encoding: ISO8859_16 (hex bytes) | |
| Encoding: JOHAB (hex bytes) | |
| Encoding: KOI8_R (hex bytes) | |
| Encoding: KOI8_T (hex bytes) | |
| Encoding: KOI8_U (hex bytes) | |
| Encoding: KZ1048 (hex bytes) | |
| Encoding: MAC_CYRILLIC (hex bytes) | |
| Encoding: MAC_GREEK (hex bytes) | |
| Encoding: MAC_ICELAND (hex bytes) | |
| Encoding: MAC_LATIN2 (hex bytes) | |
| Encoding: MAC_ROMAN (hex bytes) | |
| Encoding: MAC_TURKISH (hex bytes) | |
| Encoding: PTCP154 (hex bytes) | |
| Encoding: SHIFT_JIS (hex bytes) | |
| Encoding: SHIFT_JIS_2004 (hex bytes) | |
| Encoding: SHIFT_JISX0213 (hex bytes) | |
| Encoding: CP037 (hex bytes) | |
| Encoding: CP1025 (hex bytes) | |
| Encoding: CP1047 (hex bytes) | |
| Encoding: CP1097 (hex bytes) | |
| Encoding: CP1112 (hex bytes) | |
| Encoding: CP1122 (hex bytes) | |
| Encoding: CP1123 (hex bytes) | |
| Encoding: CP1140 (hex bytes) | |
| Encoding: CP1141 (hex bytes) | |
| Encoding: CP1142 (hex bytes) | |
| Encoding: CP1143 (hex bytes) | |
| Encoding: CP1144 (hex bytes) | |
| Encoding: CP1145 (hex bytes) | |
| Encoding: CP1146 (hex bytes) | |
| Encoding: CP1147 (hex bytes) | |
| Encoding: CP1148 (hex bytes) | |
| Encoding: CP1148MS (hex bytes) | |
| Encoding: CP1149 (hex bytes) | |
| Encoding: CP273 (hex bytes) | |
| Encoding: CP277 (hex bytes) | |
| Encoding: CP278 (hex bytes) | |
| Encoding: CP280 (hex bytes) | |
| Encoding: CP284 (hex bytes) | |
| Encoding: CP285 (hex bytes) | |
| Encoding: CP290 (hex bytes) | |
| Encoding: CP297 (hex bytes) | |
| Encoding: CP420 (hex bytes) | |
| Encoding: CP424 (hex bytes) | |
| Encoding: CP500 (hex bytes) | |
| Encoding: CP500MS (hex bytes) | |
| Encoding: CP833 (hex bytes) | |
| Encoding: CP838 (hex bytes) | |
| Encoding: CP870 (hex bytes) | |
| Encoding: CP871 (hex bytes) | |
| Encoding: CP875 (hex bytes) | |
| LATEX | |
| AGL: Latin-1 | |
| AGL: Latin-2 | |
| AGL: Latin-3 | |
| AGL: Latin-4 | |
| AGL: Latin-5 | |
| Adobe Glyph List | |
| digraph | |
| RFC 5137 | |
Bash and Zsh inside echo -e | |
| C and C++ | |
| C# | |
| CSS | |
| Excel | |
| Go | |
| JavaScript | |
| Modern JavaScript since ES6 | |
| JSON | |
| Java | |
| Lua | |
| Matlab | |
| Perl | |
| PHP | |
| PostgreSQL | |
| PowerShell | |
| Python | |
| Ruby | |
| Rust | |
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Related Characters
Elsewhere
Complete Record
| Property | Value |
|---|---|
| 1.1 (1993) | |
| NUMBER SIGN | |
| — | |
| Basic Latin | |
| Other Punctuation | |
| Common | |
| European Terminator | |
| Not Reordered | |
| none | |
| Number Sign | |
| ✘ | |
| Number Sign | |
| Number Sign | |
| ✘ | |
| Number Sign | |
| Number Sign | |
| Number Sign | |
| Number Sign | |
| Number Sign | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✔ | |
| ✘ | |
| ✘ | |
| ✔ | |
| ✘ | |
| ✘ | |
| Number Sign | |
| Any | |
| ✔ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| 0 | |
| 0 | |
| 0 | |
| ✘ | |
| None | |
| — | |
| NA | |
| Other | |
| — | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| Yes | |
| Yes | |
| Number Sign | |
| Yes | |
| Number Sign | |
| Yes | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✔ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| Other | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| Other | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| ✘ | |
| Number Sign | |
| None | |
| narrow | |
| Not Applicable | |
| — | |
| No_Joining_Group | |
| Non Joining | |
| Alphabetic | |
| none | |
| not a number | |
| Number Sign | |
| R |