The Black Small Square symbol (▪). Copy and paste it, or use its Unicode, HTML, and CSS codes.
More from Geometric Shapes.
The quickest way is to copy ▪ from this page and paste it anywhere. You can also insert it with its Unicode, HTML, or alt code listed above.
▪ is U+25AA (decimal 9642).
Use ▪ in HTML to render ▪ on a web page.
On Windows you can type it with Alt+9642 (hold Alt and enter the number on the numeric keypad).
Yes — copying is completely free and unlimited, and works right in your browser with no sign-up.