U+2089 · Other number
Subscript Nine Symbol ₉
₉ is subscript nine, U+2089. Unicode records it as a compatibility form of 9 (sub form). It was added in Unicode 1.1, and Unicode files it under Other number.
Also known as
Unicode 1.0 called this character subscript digit nine. The standard renamed it later, but documents, fonts and font-editing tools from that era still use the old name.
Codes & technical data
| Unicode | U+2089 | |
|---|---|---|
| HTML hex | ₉ | |
| HTML decimal | ₉ | |
| CSS | \2089 | |
| JavaScript | \u{2089} | |
| Python | \U00002089 | |
| Java / C# | \u2089 | |
| Rust | \u{2089} | |
| Swift | \u{2089} | |
| PHP | \u{2089} | |
| URL encoded | %E2%82%89 | |
| UTF-8 bytes | E2 82 89 | |
| UTF-16 bytes | 2089 | |
| Base64 | 4oKJ | |
| Decimal | 8329 | |
| Decomposes to | 9 (sub form) | |
| Numeric value | 9 | |
| Category | Other number (No) | |
| Introduced | Unicode 1.1 | |
Will ₉ survive being pasted?
- Normalisation. No. Anything that applies NFKC — search indexes, usernames, domain names, programming identifiers — rewrites ₉ as
9. Safe for display, not for storage. - Legacy encodings. ₉ is Unicode-only — it has no Latin-1 equivalent, so a system stuck on an 8-bit encoding cannot represent it.
- Size. 3 bytes in UTF-8. Character-limited fields — SMS, bios, some form validators — usually count bytes, not characters.
Other nine characters
Unicode names 9 characters ending in “nine”. They differ by direction, weight or decoration rather than by meaning.
Nearby in Superscripts and Subscripts
Raised and lowered digits and a handful of letters, as single characters rather than as formatting. Useful precisely where formatting is unavailable — filenames, usernames, plain-text fields — though the alphabet is incomplete and always has been.
How to type ₉
| Windows | Type 2089 then press Alt+X |
|---|---|
| macOS | Press Ctrl+Cmd+Space, then search for “subscript nine” |
| Linux | Press Ctrl+Shift+U, type 2089, press Enter |
| HTML | ₉ |
About Unicode’s Other number category
This is classified as a number that is not a plain digit — a fraction, a superscript figure, a circled or bracketed numeral. Software will not parse it as a number without being told to.
Frequently asked questions
- How do I type the ₉ subscript nine symbol?
- On Windows, type 2089 and press Alt+X. On Linux press Ctrl+Shift+U then 2089. On any system the quickest route is the copy button on this page.
- What is the code for ₉?
- Subscript Nine is U+2089. In UTF-8 it takes 3 bytes. The table above lists every escape format.
- Will ₉ survive being pasted anywhere?
- Not always. Subscript Nine is a compatibility character: any system that applies Unicode NFKC normalisation — search indexes, usernames, identifiers — replaces it with 9. Use it for display, not where text is normalised.