Mathematical Sans-Serif Bold Capital X 𝗫
Visual Description: The symbol is a bold sans-serif capital X. It uses four straight strokes that cross in the center. The lines have uniform thickness, giving a clean, geometric look. On screens it reads clearly at small sizes and stays legible in dark or light color themes. The shape is compact and balanced, with equal arms.
Meaning & Usage: In math and logic, X often stands for a variable or unknown value. In formulas you replace X with numbers to find results. In calculators and software, X may appear as a shorthand for multiply on some layouts, or as a close icon in a user interface. It also marks selections or placeholders in lists.
Historical Background: The practice of using a single letter for an unknown grew with algebra. Over time X became a common marker across many fields. Bold sans serif forms were favored for clarity on screens. The cross symbol gained familiarity as a simple, cross shaped sign used in math, science, and software interface design.
Practical Use: In quick UI work, an X button closes a window or removes an item. In formulas you can test different values by substituting X. In dashboards and calculators, X appears to indicate an unknown or to mark a selected option. The symbol supports fast operations and quick comparisons without extra text.
See our category page for related symbols.
Look‑alikes: X (U+58).
Need styled alternatives? Try the Fancy Text tool.
Confusables
Technical details
- Codepoint:
U+1D5EB - General Category:
Lu - Age:
3.1 - Bidi Class:
L - Decomposition:
<font> 0058 - Block:
Mathematical Alphanumeric Symbols - Script:
Common - UTF-8:
F0 9D 97 AB - UTF-16:
D835 DDEB - UTF-32:
0001D5EB - HTML dec:
𝗫 - HTML hex:
𝗫 - JS escape:
\u{1D5EB} - Python \N{}:
\N{MATHEMATICAL SANS-SERIF BOLD CAPITAL X} - Python \U:
\U0001D5EB - URL-encoded:
%F0%9D%97%AB - CSS escape:
\1D5EB
How to type / insert
Fast copy: click the Copy button near the top of this page.
By codepoint: in many editors and IDEs, you can insert via the Unicode code U+1D5EB or a built‑in character picker.
HTML: use the numeric entity 헫 (hex) or 헫 (decimal) when an HTML entity is needed.
Compatibility & troubleshooting
Font support: if the symbol does not render, the current font likely lacks this codepoint. Choose a font with broad Unicode coverage or allow a fallback font.
Web pages: ensure your CSS font stack includes a general fallback; avoid relying on images for common symbols to preserve accessibility and copyability.