Perpendicular symbol (⊥)
U+22A5 · UP TACK · Unicode 1.1 (1993)
How to type ⊥
Windows
No Alt code
⊥ is not in the Windows code pages 1252 or 437, so it has no Alt code. Use one of the methods below or copy it from this page.
Word and Outlook: Alt + X
22A5 Alt+X
Type 22A5 and press Alt+X right after it: Word turns the code into ⊥. Press Alt+X again to turn it back into the code.
Emoji and symbols panel (Windows 10 and 11)
Win+.
Press Win + full stop (.) to open the panel, go to the Symbols tab (Ω) and pick ⊥.
No numeric keypad on your laptop? See the other ways in our Alt codes guide.
Mac
Character Viewer
Ctrl+⌘ Cmd+Space
Press Ctrl+⌘+Space (or the Globe key + E), search for “perpendicular symbol” and click ⊥ to insert it.
iPhone
Make a shortcut (Text Replacement)
Turn a short word into ⊥ once and type it in any app:
- Copy ⊥ from this page.
- Open Settings › General › Keyboard › Text Replacement and tap +.
- Paste ⊥ as the Phrase and type a Shortcut, for example ;perpen.
- Now type ;perpen anywhere: the keyboard suggests ⊥.
Android
Make a shortcut (Gboard personal dictionary)
Teach your keyboard a short word that turns into ⊥:
- Copy ⊥ from this page.
- Open Gboard settings › Dictionary › Personal dictionary, choose your language and tap +.
- Paste ⊥ as the word and type a shortcut, for example ;perpen.
- Type ;perpen in any app and tap ⊥ in the suggestions.
Linux
Unicode input
Ctrl+Shift+U 22a5 Enter
Press Ctrl+Shift+U, type 22a5 and press Enter or Space. Works in GTK apps and with IBus (GNOME, Ubuntu, Fedora).
What ⊥ means and how it is used
Perpendicular symbol (⊥) is the Unicode character U+22A5, officially called UP TACK. It is in the Mathematical Operators block and has been part of Unicode since version 1.1 (1993).
People also call it or search for it as: eet, falsum, tack, up.
On this site it is part of the math symbols (148 symbols), next to π ∞ √ ± ×.
Codes for HTML, CSS and JavaScript
Tap Copy next to the code you need.
| HTML entity | ⊥ | |
|---|---|---|
| HTML decimal | ⊥ | |
| HTML hex | ⊥ | |
| CSS | content: "\22A5"; | |
| JavaScript | \u22A5 | |
| URL | %E2%8A%A5 | |
| UTF-8 bytes | E2 8A A5 | |
| Unicode | U+22A5 |
Will it show on my friend's phone?
Very likely yes: ⊥ dates from Unicode 1.1 (1993), so every current system has a font for it.
Checking your device…
Don't confuse ⊥ with
These look alike but are different characters. Search, sorting and screen readers treat them differently, so copy the one you mean.
- ⊥Perpendicular symbolU+22A5 · UP TACK
- ꓕU+A4D5 · Lisu
- PerpendicularU+27C2 · PERPENDICULAR · Miscellaneous Mathematical Symbols-A
- ꞱU+A7B1 · Latin Extended-D
- 𝈜U+1D21C · Ancient Greek Musical Notation
Names in other languages
What ⊥ is called in the 12 languages of this site (Unicode CLDR and our editors). Tap a name to open that language's page.
| Language | Name |
|---|---|
| English | Perpendicular symbol |
| Português | Símbolo de perpendicular |
| Español | Símbolo de perpendicular |
| Italiano | Simbolo perpendicolare |
| Français | Symbole perpendiculaire |
| Deutsch | Senkrecht-Zeichen |
| Türkçe | Diklik sembolü |
| Bahasa Indonesia | Simbol tegak lurus |
| Polski | Symbol prostopadłości |
| Русский | Знак перпендикулярности |
| 日本語 | 垂直記号 |
| 한국어 | 수직 기호 |
Related symbols
All Math →Questions people ask
How do I type ⊥ on a laptop without a numeric keypad?
On Windows press Win + full stop (.) and pick ⊥ in the Symbols tab, or in Word type 22A5 and press Alt+X.
What is the difference between ⊥ and ꓕ?
⊥ is the perpendicular symbol (U+22A5). ꓕ is a different character: ꓕ (U+A4D5, Lisu block). They can look alike, but computers treat them as different letters, so a search for one will not find the other.
How do I type ⊥ on an iPhone?
The iPhone keyboard has no key for ⊥. Copy it here, then add it in Settings › General › Keyboard › Text Replacement with a shortcut like ;perpen.
What is the HTML code for the perpendicular symbol?
Use the entity ⊥ or the numeric code ⊥ (hex ⊥). In CSS write \22A5, in JavaScript \u22A5.
Will ⊥ show on every phone?
Very likely yes: ⊥ dates from Unicode 1.1 (1993), so every current system has a font for it.