Double-struck capital B

𝔹 is the Unicode character “MATHEMATICAL DOUBLE-STRUCK CAPITAL B” (U+1D539). It belongs to the Mathematical Alphanumeric Symbols block and was added in Unicode 3.1. Click it to copy, or use the codes below.

𝔹 codes

UnicodeCode point U+1D539
HTML codeDecimal, works in any HTML page 𝔹
HTML hexHexadecimal HTML code 𝔹
CSSFor the CSS content property \1D539
JavaScriptEscape in JavaScript strings \u{1D539}
PythonEscape in Python strings \U0001D539
URL encodedPercent-encoded UTF-8 %F0%9D%94%B9
UTF-8Bytes in UTF-8 F0 9D 94 B9
UTF-16Code units in UTF-16 D835 DD39

How to type 𝔹

Copy and paste

Click to copy it, then paste with Ctrl + V (⌘ + V on a Mac) or a long press on phones.

Windows

Press Win + . to open the emoji and symbol panel, then search for “double-struck capital B”.

In Microsoft Word, type 1D539 and press Alt + X.

Mac

Press Control + ⌘ + Space to open the Character Viewer, then search for “double-struck capital B”.

iPhone and Android

Copy it here and paste it. To type it again later, save it as a text replacement (iPhone: Settings › General › Keyboard › Text Replacement; Gboard: Settings › Dictionary › Personal dictionary).

HTML and CSS

Unicode U+1D539. Every format is on the double-struck capital B page.

About 𝔹

Unicode name
MATHEMATICAL DOUBLE-STRUCK CAPITAL B
Code point
U+1D539 (120121)
Block
Mathematical Alphanumeric Symbols
Category
Uppercase Letter
Unicode version
3.1