Up Down White Arrow
About this character
The character ⇳ carries the official Unicode name “Up Down White Arrow” and the code point U+21F3, which is 8691 in decimal. It belongs to the Arrows block (U+2190–U+21FF), which gathers single, double and curved arrows used in typography, mathematics and user interfaces.
In memory, ⇳ takes 3 bytes in UTF-8 (0xE2 0x87 0xB3) and 1 in UTF-16 (0x21F3). That difference is why badly configured forms or databases garble this character: they assume one byte per character.
How to type ⇳
| System | What to do |
|---|---|
| Windows | In Word or WordPad, type 21F3 and press Alt + X to turn the code into the character. |
| macOS | On a Mac, open the Character Viewer with Ctrl + ⌘ + Space and search for “Up Down White Arrow”. |
| Linux | On Linux (GTK), type Ctrl + ⇧ + U, 21F3 then press Enter. |
| HTML / Web | In an HTML page, write ⇳. Use \21F3 in CSS, \u21F3 in JavaScript and \u21F3 in Python. |
| On this site | The simplest route is the Copy button above: the character goes straight to your clipboard, ready to paste anywhere. |
Keyboards that include ⇳
This character is not on any common physical layout, so the Copy button above is the quickest way to get it into a document.
Codes and encodings
| Property | Value |
|---|---|
| Code point | U+21F3 |
| Unicode block | Arrows (U+2190–U+21FF) |
| Decimal | 8691 |
| Hexadecimal | 0x21F3 |
| Octal | 020763 |
| Binary | 10000111110011 |
| UTF-8 bytes | 0xE2 0x87 0xB3 |
| UTF-16 units | 0x21F3 |
| Named HTML entity | None |
| Decimal HTML entity | ⇳ |
| Hex HTML entity | ⇳ |
| CSS escape | \21F3 |
| JavaScript escape | \u21F3 |
| Python escape | \u21F3 |
| URL encoding | %E2%87%B3 |
Frequently asked questions
What is the Unicode code for ⇳?
Its code point is U+21F3, which is 8691 in decimal and 020763 in octal. In HTML you can write it as ⇳ or ⇳.
Why does ⇳ show up as a box or a question mark?
An empty box means the font has no glyph for U+21F3. The character is still in the text: switching to a font that covers the block (Noto, DejaVu or Segoe UI Symbol) makes it appear.
Can I use ⇳ in a filename, a URL or a password?
In a URL it must be encoded as %E2%87%B3. Modern filesystems accept it, though it is still risky when moving files between systems. For passwords, some forms reject non-ASCII characters outright.