Step 1: Determine the UTF-8 encoding bit layout
The character ⇩ has the Unicode code point U+21E9. 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+21E9 to binary:
00100001 11101001. 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:
11100010 10000111 10101001
DOWNWARDS WHITE ARROW·U+21E9
⇩
Character Information
Code Point
U+21E9
HEX
21E9
Unicode Plane
Basic Multilingual Plane
Category
Other Symbol
Character Representations
Click elements to copy| Encoding | Hex | Binary |
|---|---|---|
| UTF8 | E2 87 A9 | 11100010 10000111 10101001 |
| UTF16 (big Endian) | 21 E9 | 00100001 11101001 |
| UTF16 (little Endian) | E9 21 | 11101001 00100001 |
| UTF32 (big Endian) | 00 00 21 E9 | 00000000 00000000 00100001 11101001 |
| UTF32 (little Endian) | E9 21 00 00 | 11101001 00100001 00000000 00000000 |
HTML Entity
⇩
URI Encoded
%E2%87%A9
Description
The Unicode character U+21E9, known as the "DOWNWARDS WHITE ARROW," is a symbol commonly used in computer typography and digital text. Its primary role is to indicate downward movement or direction, often employed within mathematical expressions, data flow diagrams, and technical documents. The arrow's simple yet clear design allows it to be easily interpreted across various platforms and devices, making it an essential tool for ensuring accurate communication in a wide range of digital contexts. Despite its frequent use in specialized fields, the DOWNWARDS WHITE ARROW remains a crucial component in maintaining clarity and coherence within complex information systems.
How to type the ⇩ symbol on Windows
Hold Alt and type 8681 on the numpad. Or use Character Map.