Step 1: Determine the UTF-8 encoding bit layout
The character � has the Unicode code point U+FFFD. In UTF-8, it is encoded using 3 bytes because its codepoint is in the range of
0x0800to0xffff.
Therefore we know that the UTF-8 encoding will be done over 16 bits within the final 24 bits and that it will have the format:1110xxxx 10xxxxxx 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+FFFD to binary:
11111111 11111101. 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:
11101111 10111111 10111101
REPLACEMENT CHARACTER·U+FFFD
�
Character Information
Code Point
U+FFFD
HEX
FFFD
Unicode Plane
Basic Multilingual Plane
Category
Other Symbol
Character Representations
Click elements to copy| Encoding | Hex | Binary |
|---|---|---|
| UTF8 | EF BF BD | 11101111 10111111 10111101 |
| UTF16 (big Endian) | FF FD | 11111111 11111101 |
| UTF16 (little Endian) | FD FF | 11111101 11111111 |
| UTF32 (big Endian) | 00 00 FF FD | 00000000 00000000 11111111 11111101 |
| UTF32 (little Endian) | FD FF 00 00 | 11111101 11111111 00000000 00000000 |
HTML Entity
�
URI Encoded
%EF%BF%BD
Description
How to type the � symbol on Windows
Hold Alt and type 65533 on the numpad. Or use Character Map.