Step 1: Determine the UTF-8 encoding bit layout
The character ¿ has the Unicode code point U+00BF. In UTF-8, it is encoded using 2 bytes because its codepoint is in the range of
0x0080to0x07ff.
Therefore we know that the UTF-8 encoding will be done over 11 bits within the final 16 bits and that it will have the format:110xxxxx 10xxxxxx
Where thexare the payload bits.UTF-8 Encoding bit layout by codepoint range Codepoint Range Bytes Bit pattern Payload length U+0000 - U+007F 1 0xxxxxxx 7 bits U+0080 - U+07FF 2 110xxxxx 10xxxxxx 11 bits U+0800 - U+FFFF 3 1110xxxx 10xxxxxx 10xxxxxx 16 bits U+10000 - U+10FFFF 4 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx 21 bits Step 2: Obtain the payload bits:
Convert the hexadecimal code point U+00BF to binary:
10111111. Those are the payload bits.Step 3: Fill in the bits to match the bit pattern:
Obtain the final bytes by arranging the paylod bits to match the bit layout:
11000010 10111111
INVERTED QUESTION MARK·U+00BF
¿
Character Information
Code Point
U+00BF
HEX
00BF
Unicode Plane
Basic Multilingual Plane
Category
Other Punctuation
Character Representations
Click elements to copy| Encoding | Hex | Binary |
|---|---|---|
| UTF8 | C2 BF | 11000010 10111111 |
| UTF16 (big Endian) | 00 BF | 00000000 10111111 |
| UTF16 (little Endian) | BF 00 | 10111111 00000000 |
| UTF32 (big Endian) | 00 00 00 BF | 00000000 00000000 00000000 10111111 |
| UTF32 (little Endian) | BF 00 00 00 | 10111111 00000000 00000000 00000000 |
HTML Entity
¿
URI Encoded
%C2%BF
Description
The Unicode character U+00BF, commonly known as the Inverted Question Mark (code 191), serves a specialized role in digital typography, particularly within linguistic, technical, and programming contexts. Despite limited use in everyday text, it is often employed to denote palatalization of consonants in phonetic transcriptions, such as those found within the International Phonetic Alphabet (IPA). This character also finds application in programming and markup languages to represent specific commands or actions. The Inverted Question Mark resides within the Latin-1 Supplement Unicode block (Plane 0, range 128-255), a versatile collection of characters essential for proper formatting and presentation of written content. Its placement in this block demonstrates its role as an extension of the basic Latin character set, thereby enhancing readability and visual appeal across various text documents and applications.
How to type the ¿ symbol on Windows
Hold Alt and type 0191 on the numpad. Or use Character Map.