# □ U+25A1 WHITE SQUARE

Empty outlined square box, used as a checkbox, missing-character placeholder, astrology square aspect, d'Alembert operator, and alchemical symbol for salt.

| | |
|---|---|
| Character | `□` |
| Codepoint | U+25A1 |
| Name | WHITE SQUARE |
| Also known as | alchemical symbol for salt, quadrature |
| Block | [Geometric Shapes](https://unicodekit.com/block/geometric-shapes) |
| Script | Common |
| Category | Other Symbol (So) |
| Unicode version | 1.1 |
| HTML | `□` `□` |
| CSS | `\25A1` |
| JavaScript | `\u25A1` |
| UTF-8 | E2 96 A1 |
| UTF-16 | 25A1 |

## Notes

- used in astrological contexts for aspect square
- may be used to represent a missing ideograph

## Related characters

- ■ [U+25A0 BLACK SQUARE](https://unicodekit.com/char/25A0)
- ▢ [U+25A2 WHITE SQUARE WITH ROUNDED CORNERS](https://unicodekit.com/char/25A2)
- ▣ [U+25A3 WHITE SQUARE CONTAINING BLACK SMALL SQUARE](https://unicodekit.com/char/25A3)
- ▤ [U+25A4 SQUARE WITH HORIZONTAL FILL](https://unicodekit.com/char/25A4)
- ▥ [U+25A5 SQUARE WITH VERTICAL FILL](https://unicodekit.com/char/25A5)
- ▦ [U+25A6 SQUARE WITH ORTHOGONAL CROSSHATCH FILL](https://unicodekit.com/char/25A6)
- ▧ [U+25A7 SQUARE WITH UPPER LEFT TO LOWER RIGHT FILL](https://unicodekit.com/char/25A7)
- ▨ [U+25A8 SQUARE WITH UPPER RIGHT TO LOWER LEFT FILL](https://unicodekit.com/char/25A8)
- ▩ [U+25A9 SQUARE WITH DIAGONAL CROSSHATCH FILL](https://unicodekit.com/char/25A9)
- ▪ [U+25AA BLACK SMALL SQUARE](https://unicodekit.com/char/25AA)
- ▫ [U+25AB WHITE SMALL SQUARE](https://unicodekit.com/char/25AB)
- ▬ [U+25AC BLACK RECTANGLE](https://unicodekit.com/char/25AC)

Page: https://unicodekit.com/char/25A1 · JSON: https://unicodekit.com/characters/25A1