CIRCLE WITH RIGHT HALF BLACK·U+25D1

Character Information

Code Point
U+25D1
HEX
25D1
Unicode Plane
Basic Multilingual Plane
Category
Other Symbol

Character Representations

Click elements to copy
EncodingHexBinary
UTF8
E2 97 91
11100010 10010111 10010001
UTF16 (big Endian)
25 D1
00100101 11010001
UTF16 (little Endian)
D1 25
11010001 00100101
UTF32 (big Endian)
00 00 25 D1
00000000 00000000 00100101 11010001
UTF32 (little Endian)
D1 25 00 00
11010001 00100101 00000000 00000000
HTML Entity
◑
URI Encoded
%E2%97%91

Description

The Unicode character U+25D1, known as "CIRCLE WITH RIGHT HALF BLACK," is a typographic symbol commonly used in digital text for creating simple shapes or for formatting purposes. Its typical usage involves representing a circle with the right half of it filled or shaded, typically used to create a visual effect or emphasize certain elements within a text. This character is widely used across various platforms and programming languages due to its versatility and compatibility with different fonts and styling options. There is no specific cultural, linguistic, or technical context associated with the U+25D1 character, as it serves more of a functional purpose in digital text formatting rather than conveying a specific meaning or reference. However, its widespread use highlights the importance of standardized symbols for creating consistent and easily interpretable visual elements across different languages and systems.

How to type the symbol on Windows

Hold Alt and type 9681 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+25D1. 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+25D1 to binary: 00100101 11010001. 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 10010111 10010001