¿
Inverted question mark
ExtendedASCII 191 | Hex 0xBF | U+00BF
ASCII Code
Decimal
191
Hexadecimal
0xBF
Octal
277
Binary
1011 1111
How to Type
Windows Alt CodeAlt + 191
HTML Entity
¿
Unicode InputU+00BF
Character in Different Encodings
| Encoding | Code | Symbol | Name |
|---|---|---|---|
| Code page 437 | 191 | ┐ | Box drawings light down and left |
| ISO-8859-1 | 191 | ¿ | Inverted question mark |
| ISO-8859-2 | 191 | ż | Latin small letter z with dot above |
| ISO-8859-3 | 191 | ż | Latin small letter z with dot above |
| ISO-8859-4 | 191 | ŋ | Latin small letter eng |
| ISO-8859-5 | 191 | П | Cyrillic capital letter Pe |
| ISO-8859-6 | 191 | ؟ | Arabic question mark |
| ISO-8859-7 | 191 | Ώ | Greek capital letter Omega with tonos |
| ISO-8859-8 | 191 | - | Unused |
| ISO-8859-9 | 191 | ¿ | Inverted question mark |
| ISO-8859-10 | 191 | ŋ | Latin small letter eng |
| ISO-8859-11 | 191 | ฟ | Thai character Fo Fan |
| Windows-1250 | 191 | ż | Latin small letter z with dot above |
| Windows-1251 | 191 | ї | Cyrillic small letter yi |
| Windows-1252 | 191 | ¿ | Inverted question mark |
| Windows-1253 | 191 | Ώ | Greek capital letter Omega with tonos |
| Windows-1254 | 191 | ¿ | Inverted question mark |
| Windows-1255 | 191 | ¿ | Inverted question mark |
| Windows-1256 | 191 | ؟ | Arabic question mark |
| Windows-1257 | 191 | æ | Latin small letter ae |
| Windows-1258 | 191 | ¿ | Inverted question mark |
Frequently Asked Questions
What is ASCII code 191?
ASCII code 191 represents the Inverted question mark character. In hexadecimal it is 0xBF, in binary 1011 1111, and in octal 277. This is an extended ASCII character whose meaning varies by encoding.
How do I type ASCII 191 on a keyboard?
On Windows, hold Alt and type 191 on the numeric keypad. On Mac, you can use the Character Viewer (Edit > Emoji & Symbols). In HTML, use the entity ¿ or ¿.