What is the Unicode code point for the perpendicular symbol?

The common perpendicular sign (⊥) is U+22A5, named UP TACK. A separate, less common character, U+27C2 (⟂), is named PERPENDICULAR and is used specifically for the geometric "is perpendicular to" relation.

What is the HTML entity for the perpendicular symbol?

Use &perp; or the numeric entity ⊥ in HTML. Both render as ⊥ (U+22A5).

How do I type the perpendicular symbol in LaTeX?

In math mode, type \perp, for example $AB \perp CD$ renders as AB ⊥ CD.

How do I type the perpendicular symbol on Windows?

In Microsoft Word, type 22A5 then press Alt+X to convert the code into ⊥. Outside Word, use the Character Map app and search for "up tack".

How do I type the perpendicular symbol on a Mac?

Open Character Viewer with Control+Command+Space, search for "up tack" or "perpendicular", then double-click the result to insert it.

How do I type the perpendicular symbol on Linux?

Press Ctrl+Shift+U, type 22a5, then press Enter or Space. This works in GTK and many other Linux text fields.

Is ⊥ the same symbol used for "perpendicular" and "bottom" in logic?

Yes, U+22A5 is overloaded: geometry uses it for a perpendicular relation, while logic and lattice theory use the same glyph for the bottom element or a contradiction. Context determines the meaning.

Perpendicular Symbol

Name: Perpendicular Symbol
Availability: InStock
Author: Nham Vu

Copy the perpendicular symbol (⊥) and find its Unicode code point, HTML entity, and LaTeX command.

Perpendicular Symbol

Click the symbol to copy it

Formats

Character ⊥

Unicode U+22A5

HTML entity &perp;

HTML decimal ⊥

LaTeX \perp

CSS escape \22A5

JS / JSON escape ⊥

Geometry variant (U+27C2) ⟂

Click any row to copy that exact string.

Input Methods

System	Method	Notes
Windows (Word)		Type 22A5 then press Alt+X to convert it.
Windows (any app)		Search "up tack" in the Character Map app and copy it.
Mac		Opens Character Viewer, search "up tack" or "perpendicular".
Linux (GTK)		Type the hex code, then press Enter or Space.
LaTeX		Math mode command, e.g. $AB \perp CD$.

Try it

Type two line or segment names to build a ready-to-paste perpendicular statement.

⊥

AB ⊥ CD

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Summary

Copy the perpendicular symbol (⊥) and find its Unicode code point, HTML entity, and LaTeX command.

How it works

Click the large perpendicular symbol to copy it to your clipboard.
Or click any format in the list (Unicode, HTML entity, LaTeX, CSS escape) to copy that exact string.
Use the input methods table to type the symbol directly on Windows, Mac, or Linux.
Paste the symbol anywhere: documents, spreadsheets, code, or chat.

Use cases

Write a perpendicular relation like AB ⊥ CD in a geometry document.
Insert the perpendicular symbol into a LaTeX equation with \perp.
Add the symbol to CAD notes, technical drawings, or lab reports.
Copy the correct HTML entity for a web page instead of pasting a raw Unicode character.
Type the "up tack" character used in logic and lattice theory for a bottom element.

Frequently Asked Questions

Last updated: 2026-07-22 · Reviewed by Nham Vu