Step 1: Determine the UTF-8 encoding bit layout
The character ± has the Unicode code point U+00B1. In UTF-8, it is encoded using 2 bytes because its codepoint is in the range of
0x0080to0x07ff.
Therefore we know that the UTF-8 encoding will be done over 11 bits within the final 16 bits and that it will have the format:110xxxxx 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+00B1 to binary:
10110001. 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:
11000010 10110001
PLUS-MINUS SIGN·U+00B1
±
Character Information
Code Point
U+00B1
HEX
00B1
Unicode Plane
Basic Multilingual Plane
Category
Math Symbol
Character Representations
Click elements to copy| Encoding | Hex | Binary |
|---|---|---|
| UTF8 | C2 B1 | 11000010 10110001 |
| UTF16 (big Endian) | 00 B1 | 00000000 10110001 |
| UTF16 (little Endian) | B1 00 | 10110001 00000000 |
| UTF32 (big Endian) | 00 00 00 B1 | 00000000 00000000 00000000 10110001 |
| UTF32 (little Endian) | B1 00 00 00 | 10110001 00000000 00000000 00000000 |
HTML Entity
±
URI Encoded
%C2%B1
Description
The Unicode character U+00B1, also known as the Plus-Minus Sign (±), is an essential symbol in digital text that represents the arithmetic operation of division or subtraction. This versatile character is widely used in mathematics, scientific notation, and various programming languages to indicate an expression can be divided, subtracted, or negated based on the context. Its correct interpretation significantly impacts the outcome of equations, making it indispensable in technical contexts. The Plus-Minus Sign belongs to the Latin-1 Supplement Unicode block (range 128 to 255), which is a diverse collection of characters serving various text formatting and typography purposes. This range includes symbols like en dashes, pilcrows, and others crucial for proper formatting and presentation of written content. The Latin-1 Supplement block was designed to extend the basic Latin character set, enhancing the readability and overall visual appeal of text documents. Its characters can be utilized across a wide range of applications, from professional documents to creative writing, ensuring clear communication and an aesthetically pleasing experience for readers.
How to type the ± symbol on Windows
Hold Alt and type 0177 on the numpad. Or use Character Map.