U+221A
| OS | Layout | Shortcut |
|---|---|---|
| Windows(you) | Us | AltGr + V |
| Windows | Uk | AltGr + V |
| Windows | German | AltGr + V |
| macOS | Us | Option + V |
| macOS | Uk | Option + V |
| macOS | German | Option + V |
| Application | How to insert Square Root Sign |
|---|---|
| Microsoft Word | Type 221A, then press Alt+X |
| Excel / Google Sheets | Use the formula =UNICHAR(8730) |
| Google Docs | Insert → Special characters, then search "square root sign" |
| HTML | √ or √ |
| CSS (content property) | content: "\221A" |
| JavaScript | "\u221A" |
The radical sign denotes the square root of a number. For example, √9 = 3.
Used in mathematics, engineering, and science. Extended forms include cube root (∛) and fourth root (∜).