Below is the Alt code keyboard shortcut for inserting the upside down question mark or inverted question mark. If you are new to ALT codes and need detailed instructions on how to use them, please read How to Use ALT Codes to Enter Special Characters. For the the complete list of the ASCII based Windows ALT Codes, refer to Windows ALT Codes for Special Characters & Symbols.
| Symbol | ¿ |
| Symbol Name | Inverted question mark Turned question mark Upside down question mark |
| Windows Alt Code | ALT 168 or ALT 0191 |
| Windows Alt X Code | 00BF ALT X |
| Mac Option Key Shortcut | Option + Shift + / |
| HTML Entity Named Character Reference | ¿ |
| HTML Entity Numeric Character Reference (Hexadecimal) | ¿ |
| HTML Entity Numeric Character Reference (Decimal) | ¿ |
| Unicode Code Point | U+00BF |
