U+1D7D9 Β· Mathematical Alphanumeric Symbols
Mathematical Double-Struck Digit One π
Mathematical Double-Struck Digit One is the Unicode character U+1D7D9 (official name βMATHEMATICAL DOUBLE-STRUCK DIGIT ONEβ) from the Mathematical Alphanumeric Symbols block. It belongs to SymbolHeroβs fancy letters (math alphanumeric) collection. Copy it with the button, or use the codes and keyboard methods below to type it yourself.
Character codes
| Unicode code point | U+1D7D9 | |
|---|---|---|
| Decimal | 120793 | |
| HTML (hex) | 𝟙 | |
| HTML (decimal) | 𝟙 | |
| CSS | \1D7D9 | |
| JavaScript | \u{1D7D9} or "\uD835\uDFD9" | |
| Python | \U0001D7D9 | |
| UTF-8 bytes | F0 9D 9F 99 | |
| UTF-16 | D835 DFD9 | |
| URL-encoded | %F0%9D%9F%99 |
Character details
| Official name | MATHEMATICAL DOUBLE-STRUCK DIGIT ONE |
|---|---|
| Unicode block | Mathematical Alphanumeric Symbols |
| General category | Decimal Digit (Nd) |
| SymbolHero category | Fancy Letters (Math Alphanumeric) |
| Decomposition | <font> U+0031 |
| Emoji | No |
How to type π
Windows
- In Microsoft Word or Outlook: type
1D7D9then press Alt + X.
Mac
- Press Control + Command + Space to open the Character Viewer, search βmathematical double-struck digit oneβ, and double-click the result.
iPhone & Android
- Tap Copy at the top of this page, then long-press where you want it and choose Paste.
Docs & web
- Google Docs: Insert β Special characters, then search βmathematical double-struck digit oneβ or enter
U+1D7D9. - HTML:
𝟙 - Excel / Google Sheets:
=UNICHAR(120793)
Similar fancy letters (math alphanumeric)
Questions
What is the Unicode for π?
It is U+1D7D9 (MATHEMATICAL DOUBLE-STRUCK DIGIT ONE), decimal 120793.
Is there a Windows Alt code for it?
No standard Alt code exists for this character. In Word type 1D7D9 then Alt+X, or copy it from this page.
How do I type it on a Mac?
There is no built-in Option shortcut. Use the Character Viewer (Control + Command + Space) and search βmathematical double-struck digit oneβ, or copy it from this page.
What is the HTML code?
Use the numeric reference 𝟙 (or 𝟙). There is no named entity.