Mathematical Double-struck Capital J vs Latin Capital Letter J
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.
Property Comparison
| Property | Mathematical Double-struck Capital J | Latin Capital Letter J |
|---|---|---|
| Codepoint |
U+1D541
|
U+004A
|
| Decimal |
120129
|
74
|
| HTML Entity |
𝕁
|
J
|
| HTML Decimal |
𝕁
|
J
|
| HTML Hex |
𝕁
|
J
|
| UTF-8 |
F0 9D 95 81
|
4A
|
| UTF-16 |
D8 35 DD 41
|
00 4A
|
| UTF-32 |
0001D541
|
0000004A
|
| CSS Escape |
\1D541
|
\4A
|
| JS Escape |
\uD835\uDD41
|
\u004A
|
| Python Escape |
\U0001D541
|
\u004A
|
| URL Encoded |
%F0%9D%95%81
|
J
|
| 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