Use sqrt() in calculators and spreadsheets (e.g., =SQRT(16) in Excel).

Just copy this:

| Device | Shortcut | | :--- | :--- | | | Alt + 251 | | Windows (No Numpad) | Win + . (Period) → Symbols → Math | | Mac | Option + V | | iPhone | 123 → += key | | Android | ?123 → Sym/Arrow | | Word | 221A + Alt + X |

Here are the most common methods: