■
Black Square
- Unicode
- U+25A0
- Category
- Geometric
- HTML Entity
- ■
- CSS
- \25A0
The Black Square (■) is a solid geometric shape originating from early computer character sets and included in the Unicode Geometric Shapes block. It is widely used in typography as a bold bullet point, in digital interfaces as a "stop" button for media playback, and in mathematics to mark the end of a proof.
How to Type
- Windows
- Alt+9632 or Win+. then search "black square"
- macOS
- Control+Command+Space then search "black square"
- Linux
- Ctrl+Shift+U then 25A0
- HTML
- ▪
In Programming
In mathematical documentation, this symbol is known as a halmos or tombstone, placed at the very end of a completed proof (Q.E.D.). UI developers also frequently use it as a standard "stop" icon for audio and video playback controls.
Tags
QED symbol
black box
block
bullet point
end of proof
filled square
geometric
halmos symbol
media stop icon
shape
solid black square
stop button symbol
tombstone math
unicode black square