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Square Root, Radical Sign Alt Code – How to Type √

Alt Code for square root, radical sign: Alt + 251

The square root, radical sign symbol √ can be typed on a Windows computer using an Alt code or copied and pasted directly from this page.

Symbols » Alt Codes

How to Type Square Root, Radical Sign using Alt Code

  • Hold down the Alt key
  • Type 251 on the numeric keypad
  • Release the Alt key to insert the symbol

If your keyboard does not have a numeric keypad, try holding Fn + Alt while typing the number.