U+21CD · Other symbol
HTML entity
⇍
LaTeX
\nLeftarrow
Leftwards Double Arrow With Stroke Symbol ⇍
⇍ is leftwards double arrow with stroke, U+21CD. Unicode records it as a compatibility form of ⇍. It was added in Unicode 1.1, and Unicode files it under Other symbol.
Also known as
Unicode 1.0 called this character left double arrow with stroke. The standard renamed it later, but documents, fonts and font-editing tools from that era still use the old name.
What Unicode says about ⇍
negation of 21D0
— annotation from the Unicode Standard, NamesList.txt
Codes & technical data
| Unicode | U+21CD | |
|---|---|---|
| HTML hex | ⇍ | |
| HTML decimal | ⇍ | |
| CSS | \21CD | |
| JavaScript | \u{21CD} | |
| Python | \U000021CD | |
| Java / C# | \u21CD | |
| Rust | \u{21cd} | |
| Swift | \u{21CD} | |
| PHP | \u{21CD} | |
| URL encoded | %E2%87%8D | |
| UTF-8 bytes | E2 87 8D | |
| UTF-16 bytes | 21CD | |
| Base64 | 4oeN | |
| Decimal | 8653 | |
| HTML entity | ⇍ | |
| LaTeX | \nLeftarrow | |
| Decomposes to | ⇍ | |
| Category | Other symbol (So) | |
| Introduced | Unicode 1.1 | |
Will ⇍ survive being pasted?
- Normalisation. Yes. ⇍ is unchanged by NFKC, so it survives normalising systems intact.
- Legacy encodings. ⇍ 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 stroke characters
Unicode names 24 characters ending in “stroke”. They differ by direction, weight or decoration rather than by meaning.
Nearby in Arrows
The core arrow set: every direction, plus doubled, dashed, hooked and looped variants. Anything not here is in one of the four supplemental arrow blocks, which exist because this one filled up.
How to type ⇍
| Windows | Type 21CD then press Alt+X |
|---|---|
| macOS | Press Ctrl+Cmd+Space, then search for “leftwards double arrow with stroke” |
| Linux | Press Ctrl+Shift+U, type 21cd, press Enter |
| HTML | ⇍ |
About Unicode’s Other symbol category
Unicode files this under "other symbol" — the catch-all for pictographs, signs and marks that are neither maths, currency, nor letter-like. It is the largest symbol category in the standard.
Frequently asked questions
- How do I type the ⇍ leftwards double arrow with stroke symbol?
- On Windows, type 21CD and press Alt+X. On Linux press Ctrl+Shift+U then 21cd. On any system the quickest route is the copy button on this page.
- What is the code for ⇍?
- Leftwards Double Arrow With Stroke is U+21CD, written in HTML as ⇍ and in LaTeX as \nLeftarrow. In UTF-8 it takes 3 bytes. The table above lists every escape format.
- What kind of character is ⇍?
- Leftwards Double Arrow With Stroke is filed under Other symbol in the Arrows block, and was introduced in Unicode 1.1. Unicode files this under "other symbol" — the catch-all for pictographs, signs and marks that are neither maths, currency, nor letter-like. It is the largest symbol category in the standard.