Step 1: Determine the UTF-8 encoding bit layout
The character ☡ has the Unicode code point U+2621. 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+2621 to binary:
00100110 00100001. 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 10011000 10100001
CAUTION SIGN·U+2621
☡
Character Information
Code Point
U+2621
HEX
2621
Unicode Plane
Basic Multilingual Plane
Category
Other Symbol
Character Representations
Click elements to copy| Encoding | Hex | Binary |
|---|---|---|
| UTF8 | E2 98 A1 | 11100010 10011000 10100001 |
| UTF16 (big Endian) | 26 21 | 00100110 00100001 |
| UTF16 (little Endian) | 21 26 | 00100001 00100110 |
| UTF32 (big Endian) | 00 00 26 21 | 00000000 00000000 00100110 00100001 |
| UTF32 (little Endian) | 21 26 00 00 | 00100001 00100110 00000000 00000000 |
HTML Entity
☡
URI Encoded
%E2%98%A1
Description
The Unicode character U+2621, known as the CAUTION SIGN (⚠️), is an essential symbol used to indicate potential hazards, risks, or areas of caution in digital text. This glyph has its roots in various safety-related symbols and signs found across industries such as transportation, construction, and manufacturing. In digital media, the Caution Sign is commonly employed in user interface design, warnings, error messages, and signage to alert users to potential risks or critical information. Its use can help prevent accidents and misunderstandings by ensuring that important warnings are easily recognized and understood by a wide range of users across different cultures and languages. As part of the Unicode Standard, U+2621 is widely supported by modern software applications and operating systems, making it an accessible choice for designers and developers seeking to enhance user safety and experience in their digital products.
How to type the ☡ symbol on Windows
Hold Alt and type 9761 on the numpad. Or use Character Map.