U+23A1 · Miscellaneous Technical
Left Square Bracket Upper Corner ⎡
Left Square Bracket Upper Corner is the Unicode character U+23A1 (official name “LEFT SQUARE BRACKET UPPER CORNER”) from the Miscellaneous Technical block. It belongs to SymbolHero’s math symbols collection. Copy it with the button, or use the codes and keyboard methods below to type it yourself.
UnicodeU+23A1
HTML⎡
⎡U+23A1
Character codes
| Unicode code point | U+23A1 | |
|---|---|---|
| Decimal | 9121 | |
| HTML (hex) | ⎡ | |
| HTML (decimal) | ⎡ | |
| CSS | \23A1 | |
| JavaScript | \u23A1 | |
| Python | \u23A1 | |
| UTF-8 bytes | E2 8E A1 | |
| UTF-16 | 23A1 | |
| URL-encoded | %E2%8E%A1 |
Character details
| Official name | LEFT SQUARE BRACKET UPPER CORNER |
|---|---|
| Unicode block | Miscellaneous Technical |
| General category | Math Symbol (Sm) |
| SymbolHero category | Math Symbols |
| Emoji | No |
How to type ⎡
Windows
- In Microsoft Word or Outlook: type
23A1then press Alt + X. - Open Character Map (search “Character Map” in Start), tick “Advanced view”, search for “left square bracket upper corner”, then Select and Copy.
Mac
- Press Control + Command + Space to open the Character Viewer, search “left square bracket upper corner”, and double-click the result.
- With the Unicode Hex Input keyboard enabled (System Settings → Keyboard → Input Sources), hold Option and type
23A1.
iPhone & Android
- Tap Copy at the top of this page, then long-press where you want it and choose Paste.
Docs & web
- Google Docs: Insert → Special characters, then search “left square bracket upper corner” or enter
U+23A1. - HTML:
⎡ - Excel / Google Sheets:
=UNICHAR(9121)
Similar math symbols
Questions
What is the Unicode for ⎡?
It is U+23A1 (LEFT SQUARE BRACKET UPPER CORNER), decimal 9121.
Is there a Windows Alt code for it?
No standard Alt code exists for this character. In Word type 23A1 then Alt+X, or copy it from this page.
How do I type it on a Mac?
There is no built-in Option shortcut. Use the Character Viewer (Control + Command + Space) and search “left square bracket upper corner”, or copy it from this page.
What is the HTML code?
Use the numeric reference ⎡ (or ⎡). There is no named entity.