What is the difference between Mathematical Sans-serif Italic Capital O and Latin Capital Letter O?

Mathematical Sans-serif Italic Capital O is U+1D616 in the Mathematical Alphanumeric Symbols block. Latin Capital Letter O is U+004F in the Basic Latin block. They are distinct Unicode codepoints and may appear visually similar depending on the font.

What is the HTML entity for Mathematical Sans-serif Italic Capital O?

The HTML entity for Mathematical Sans-serif Italic Capital O (U+1D616) is 𝘖.

What is the HTML entity for Latin Capital Letter O?

The HTML entity for Latin Capital Letter O (U+004F) is O.

Are Mathematical Sans-serif Italic Capital O and Latin Capital Letter O the same Unicode character?

No. Mathematical Sans-serif Italic Capital O is U+1D616 (decimal 120342) and Latin Capital Letter O is U+004F (decimal 79). They are separate codepoints.

What are the UTF-8 encodings of Mathematical Sans-serif Italic Capital O and Latin Capital Letter O?

Mathematical Sans-serif Italic Capital O (U+1D616) encodes as F0 9D 98 96 in UTF-8. Latin Capital Letter O (U+004F) encodes as 4F in UTF-8.

Mathematical Sans-serif Italic Capital O vs Latin Capital Letter O

Compare two Unicode characters side by side — encodings, HTML entities, escape sequences, and Unicode properties. Useful for distinguishing visually similar characters like hyphens and dashes, quotation marks, or homoglyphs.

𝘖

Mathematical Sans-serif Italic Capital O

U+1D616

Full details →

Latin Capital Letter O

U+004F

Full details →

Property Comparison

Property	Mathematical Sans-serif Italic Capital O	Latin Capital Letter O
Codepoint	`U+1D616`	`U+004F`
Decimal	`120342`	`79`
HTML Entity	`𝘖`	`O`
HTML Decimal	`𝘖`	`O`
HTML Hex	`𝘖`	`O`
UTF-8	`F0 9D 98 96`	`4F`
UTF-16	`D8 35 DE 16`	`00 4F`
UTF-32	`0001D616`	`0000004F`
CSS Escape	`\1D616`	`\4F`
JS Escape	`\uD835\uDE16`	`\u004F`
Python Escape	`\U0001D616`	`\u004F`
URL Encoded	`%F0%9D%98%96`	`O`
Category	`Uppercase Letter (Lu)`	`Uppercase Letter (Lu)`
Block	`Mathematical Alphanumeric Symbols`	`Basic Latin`
Script	`Common`	`Latin`
Bidi Class	`L`	`L`
Unicode Version	`3.1`	`1.1`

Rows highlighted in amber differ between the two characters.

Common Comparisons

Frequently confused character pairs.

Em Dash vs En Dash 2014 / 2013 Hyphen-Minus vs Minus Sign 002D / 2212 Copyright vs Sound Recording Copyright 00A9 / 2117 Latin A vs Greek Alpha 0041 / 0391 Degree Sign vs Masculine Ordinal 00B0 / 00BA Left vs Right Single Quotation Mark 2018 / 2019 Left vs Right Double Quotation Mark 201C / 201D Multiplication Sign vs Letter x 00D7 / 0078 Right Quotation Mark vs Apostrophe 2019 / 0027 Horizontal Ellipsis vs Three Dots 2026 / 0020