ASCII 174
Registered Sign (®)
Latin-1 Supplement
Registered trademark (®). Marks a registered trademark, as opposed to ™ which is unregistered.
Common uses & context
Decimal 174 (0xAE) is Registered Sign, part of the Latin-1 Supplement (128–255). Registered trademark (®). Marks a registered trademark, as opposed to ™ which is unregistered. It renders as '®' and its binary byte is 10101110.
This is where single-byte ASCII ends and encoding matters. In Latin-1 (ISO-8859-1) '®' is the single byte 0xAE. In UTF-8 — today's default for the web — the same character is the multi-byte sequence 0xC2 0xAE. Treating a Latin-1 byte as UTF-8 (or vice versa) is the usual reason accented letters and symbols turn into mojibake like é or €. The Unicode code point is U+00AE, and in HTML you can write it as ® or ®.
All encodings at a glance
| Decimal | 174 |
| Hexadecimal | 0xAE |
| Octal | 0256 |
| Binary | 10101110 |
| HTML numeric entity | ® |
| HTML named entity | ® |
| URL encoding | %AE |
| UTF-8 bytes | 0xC2 0xAE |
Code snippets
JavaScript
String.fromCharCode(174); // "®"
174.toString(16); // "ae"Python
chr(174) # control char ®
ord(chr(174)) # 174
hex(174) # '0xae'HTML
® <!-- named entity -->
® <!-- numeric entity -->Programming notes
- ▸Single byte 0xAE in Latin-1, but the multi-byte sequence 0xC2 0xAE in UTF-8 — never assume one byte per character above code 127.
- ▸Unicode code point U+00AE; HTML entity ®.
- ▸If '®' shows as mojibake, the encoding declared and the encoding used disagree — align both on UTF-8.
Unicode & UTF-8 note
In Unicode this is U+00AE. In UTF-8 it encodes to the byte sequence 0xC2 0xAE. In legacy Latin-1 (ISO-8859-1) it is a single byte 0xAE, which is why Latin-1 files often appear as mojibake when interpreted as UTF-8.
Frequently asked questions
What character is ASCII code 174?
ASCII code 174 is the character '®' (Registered Sign). In hexadecimal it is 0xAE, in octal 0256, and in binary 10101110.
What is 0xAE in ASCII?
Hexadecimal 0xAE equals decimal 174, which is the character '®' (Registered Sign). To convert hex to ASCII yourself, read the two hex digits as a base-16 number (0xAE = 174) and look up that code point.
How do I write the character with code 174 in code?
In JavaScript use String.fromCharCode(174); in Python use chr(174); in HTML use the numeric entity ® or the named entity ®. In a URL it is percent-encoded as %AE, and in UTF-8 it is stored as the byte sequence 0xC2 0xAE.
Is '®' part of standard ASCII?
No. Standard ASCII covers codes 0–127 only. '®' is code 174, part of the Latin-1 Supplement (128–255, sometimes called "extended ASCII"). It is a single byte 0xAE in Latin-1 but a multi-byte sequence (0xC2 0xAE) in UTF-8.