How to type Square Root
- Windows: hold Alt, type 251 on the numeric keypad, release. This is a legacy OEM/CP437 code (no leading zero) rather than a Windows-1252 one.
- Mac: Option+v.
- HTML:
√or√. - Chromebook: Ctrl+Shift+U, type 221A, then Enter.
Reference
- Unicode name: SQUARE ROOT
- Code point: U+221A
- Category: Math & measurement
- Also searched as: root radical sqrt check
Symbol data last reviewed: July 9, 2026.