Click the Copy button above and the square root text symbol √ is on your clipboard instantly - free, no sign-up, no install, works on every device.
Ctrl + V in any text field.Command + V. You can also open the Character Viewer with Control + Command + Space and search for "square root".√ (Unicode U+221A) is the square root text symbol. People drop it into chat messages, Instagram and TikTok bios, captions, nicknames, Discord and documents to add a touch of root. Because it is plain text, it renders on every platform without images.