Step 1: Determine the UTF-8 encoding bit layout
The character ⇕ has the Unicode code point U+21D5. 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+21D5 to binary:
00100001 11010101. 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 10010101
UP DOWN DOUBLE ARROW·U+21D5
⇕
Character Information
Code Point
U+21D5
HEX
21D5
Unicode Plane
Basic Multilingual Plane
Category
Other Symbol
Character Representations
Click elements to copy| Encoding | Hex | Binary |
|---|---|---|
| UTF8 | E2 87 95 | 11100010 10000111 10010101 |
| UTF16 (big Endian) | 21 D5 | 00100001 11010101 |
| UTF16 (little Endian) | D5 21 | 11010101 00100001 |
| UTF32 (big Endian) | 00 00 21 D5 | 00000000 00000000 00100001 11010101 |
| UTF32 (little Endian) | D5 21 00 00 | 11010101 00100001 00000000 00000000 |
HTML Entity
⇕
URI Encoded
%E2%87%95
Description
The Unicode character U+21D5, known as the UP DOWN DOUBLE ARROW, is a symbol commonly used in digital text to represent the idea of an object moving both up and down simultaneously or reversing direction. It is often utilized in programming languages, diagrams, and mathematical equations to indicate bidirectional movement, transitions, or flow between two states or points. The UP DOWN DOUBLE ARROW is particularly prevalent in software and algorithms that involve binary decision-making processes, where it symbolizes a "flip-flop" or "toggling" action. It plays an important role in digital communication by enabling clear expression of these concepts without ambiguity or confusion. Despite its limited usage in everyday language, this character holds significant technical value due to its precise representation of bidirectional actions and transitions in various contexts.
How to type the ⇕ symbol on Windows
Hold Alt and type 8661 on the numpad. Or use Character Map.