Step 1: Determine the UTF-8 encoding bit layout
The character @ has the Unicode code point U+0040. In UTF-8, it is encoded using 1 byte because its codepoint is in the range of
0x0000to0x007f.
Therefore we know that the UTF-8 encoding will be done over 7 bits within the final 8 bits and that it will have the format:0xxxxxxx
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+0040 to binary:
01000000. 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:
01000000
COMMERCIAL AT·U+0040
@
Character Information
Code Point
U+0040
HEX
0040
Unicode Plane
Basic Multilingual Plane
Category
Other Punctuation
Character Representations
Click elements to copy| Encoding | Hex | Binary |
|---|---|---|
| UTF8 | 40 | 01000000 |
| UTF16 (big Endian) | 00 40 | 00000000 01000000 |
| UTF16 (little Endian) | 40 00 | 01000000 00000000 |
| UTF32 (big Endian) | 00 00 00 40 | 00000000 00000000 00000000 01000000 |
| UTF32 (little Endian) | 40 00 00 00 | 01000000 00000000 00000000 00000000 |
HTML Entity
@
URI Encoded
%40
Description
The Unicode character U+0040, commonly known as the COMMERCIAL AT symbol (code: 64), is a crucial alphanumeric sign employed in digital textual content. Its primary role lies in delimiting or separating information in various technical contexts, particularly within computer programming and digital communications. In these domains, it serves to denote an at-sign (@) that is conventionally used for addressing users on online platforms like social media and emails. Although its usage may seem limited in cultural, linguistic, or technical contexts, the COMMERCIAL AT symbol holds substantial prominence due to the widespread use of digital communication tools globally. Despite being relatively obscure within the Unicode system, this character plays an indispensable role in fostering efficient and effective online interactions worldwide. The COMMERCIAL AT symbol belongs to the Basic Latin Unicode block (category 677), a foundational component of the Unicode system encompassing 128 essential characters ranging from U+0000 to U+007F. This range includes control codes and special symbols that are indispensable for programming languages, text documents, and various other applications. The Basic Latin block serves as a foundation for many other Unicode blocks, owing to its inclusion of common characters essential for communication across multiple platforms and devices. Although the COMMERCIAL AT symbol's roots lie in the ASCII character set, it has evolved to accommodate modern needs and remains integral to digital communication.
How to type the @ symbol on Windows
Hold Alt and type 0064 on the numpad. Or use Character Map.