Mathematical Double-struck Digit Five Symbol
π is the double-struck digit five used for distinctive mathematical typography.
U+1D7DD
The symbol π is a double-struck version of the digit five. Itβs commonly used when you want numbers to match a formal math or set-notation style. Below youβll find practical ways to copy it and use it in text, design, and code.
Mathematical Double-struck Digit Five Symbol Meaning
π (MATHEMATICAL DOUBLE-STRUCK DIGIT FIVE, U+1D7DD) is a typographic variant of the number 5 with a βdouble-struckβ look. Double-struck digits are often used in mathematics to create a consistent visual style distinct from plain digits. Youβll see such glyphs in contexts where typography is used to differentiate numeric sets, labeled elements, or styled expressions. For everyday writing itβs uncommon, but in design systems, equation mockups, and documentation that emphasizes mathematical readability, it can be a useful character to match a specific font or notation style.
Common uses
- β’Typing styled digits in math notes, worksheets, or slide decks
- β’Designing equation labels and callouts with a distinctive number style
- β’Using in UI mockups where numerals must match a math/academic aesthetic
- β’Including in technical documentation or readme files that display styled numbers
- β’Publishing consistent math typography in posts, thumbnails, or banners
Examples
π Mathematical Double-Struck Digit Five
- πExample 1: π is shown in double-struck style.
- πWe label the fifth item as π.
- πSet element: π β A.
- πResult after step π.
- πStyled numeral: π in the equation.
Variations
Ready to copy
Technical codes
| Unicode | U+1D7DD | |
| HTML Entity | 𝟝 | |
| HTML Code | 𝟝 | |
| CSS | \1D7DD | |
| Decimal | 120797 |
How to type Mathematical Double-struck Digit Five Symbol (π)
On Windows
In Word, type 1D7DD then press Alt + X. Or open the emoji picker with Windows key + period.
On Mac
Press Control + Command + Space to open Character Viewer and search for the character.
On Linux
Press Control + Shift + U, type 1d7dd, then press Enter or Space.
Anywhere
Copy π with the button above and paste it wherever you need it β this works on every device and in every app, with no keyboard shortcut to remember.
FAQ
What does the Mathematical Double-struck Digit Five symbol mean?
π (MATHEMATICAL DOUBLE-STRUCK DIGIT FIVE, U+1D7DD) is a typographic variant of the number 5 with a βdouble-struckβ look. Double-struck digits are often used in mathematics to create a consistent visual style distinct from plain digits. Youβll see such glyphs in contexts where typography is used to differentiate numeric sets, labeled elements, or styled expressions. For everyday writing itβs uncommon, but in design systems, equation mockups, and documentation that emphasizes mathematical readability, it can be a useful character to match a specific font or notation style.
What is π, and how is it different from a regular 5?
π is the Mathematical Double-Struck Digit Five (U+1D7DD). It has a double-struck typographic style, unlike the plain ASCII digit β5β.
Where can I use π?
Itβs useful in math-styled text, design mockups, UI labels that need an academic look, technical documentation, and equation-related graphics.
How do I type or insert π in code?
You can paste the character directly, use the HTML entity 𝟝, or insert it via Unicode escapes such as \\\\u{1D7DD} (JavaScript) or \\\\1D7DD (CSS escape).
Will π always display correctly?
Display depends on the font and platform support for U+1D7DD. If a font lacks the glyph, you may see a fallback or a different appearance.