RIGHTWARDS SQUIGGLE ARROW·U+21DD

Character Information

Code Point
U+21DD
HEX
21DD
Unicode Plane
Basic Multilingual Plane
Category
Other Symbol

Character Representations

Click elements to copy
EncodingHexBinary
UTF8
E2 87 9D
11100010 10000111 10011101
UTF16 (big Endian)
21 DD
00100001 11011101
UTF16 (little Endian)
DD 21
11011101 00100001
UTF32 (big Endian)
00 00 21 DD
00000000 00000000 00100001 11011101
UTF32 (little Endian)
DD 21 00 00
11011101 00100001 00000000 00000000
HTML Entity
⇝
URI Encoded
%E2%87%9D

Description

The Unicode character U+21DD, known as the RIGHTWARDS SQUIGGLE ARROW, is a typographical symbol used in digital text to represent a rightward squiggle. It serves as an arrow that curls back upon itself, creating a more fluid and less linear directional indication than traditional straight arrows. This symbol is commonly utilized in mathematical and scientific notation, where it can be employed to depict various concepts such as derivatives, integrals, or the behavior of functions. Its unique squiggle shape sets it apart from other arrow symbols, making it an essential tool for conveying specific ideas within these contexts. While it may not have a direct cultural or linguistic significance, its use in technical domains speaks to the diversity and expressiveness of Unicode's extensive character set.

How to type the symbol on Windows

Hold Alt and type 8669 on the numpad. Or use Character Map.

  1. Step 1: Determine the UTF-8 encoding bit layout

    The character has the Unicode code point U+21DD. In UTF-8, it is encoded using 3 bytes because its codepoint is in the range of 0x0800 to 0xffff.

    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 the x are the payload bits.

    UTF-8 Encoding bit layout by codepoint range
    Codepoint RangeBytesBit patternPayload length
    U+0000 - U+007F10xxxxxxx7 bits
    U+0080 - U+07FF2110xxxxx 10xxxxxx11 bits
    U+0800 - U+FFFF31110xxxx 10xxxxxx 10xxxxxx16 bits
    U+10000 - U+10FFFF411110xxx 10xxxxxx 10xxxxxx 10xxxxxx21 bits
  2. Step 2: Obtain the payload bits:

    Convert the hexadecimal code point U+21DD to binary: 00100001 11011101. Those are the payload bits.

  3. 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 10011101