HTML Entity Detail

HTML Entity - Roman Numeral Nine

Roman Numeral Nine is a Roman numerals and number forms used in outlines and formal documents. This HTML entity enables web developers to display this character reliably across all browsers without encoding issues.

Symbol preview
Ⅸ
Unicode

U+2168

HTML entity

CSS code

\2168

Usage Examples

Use this HTML entity in chapter headings, copyright dates, clock faces, and formal outlines. Example: Chapter Ⅴ.

Common Mistakes

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Mistake: Using Latin letters (I, V, X) instead of proper Roman numeral Unicode characters

Fix: Roman numeral characters (Ⅰ–Ⅹ) are single-width glyphs designed to look correct. Using Latin letters (I, V, X) can look inconsistent, especially for numerals like Ⅳ (IV) vs IV.

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Mistake: Using the wrong subtraction notation combining forms

Fix: The standard Roman numeral for 4 is IV (I before V), not IIII. For 9 it's IX, not VIIII. Some clock faces use IIII for aesthetic reasons, but it's non-standard for most uses.

Roman Numeral Nine

Select any code to highlight it before copying.

Category: Number Forms
Unicode U+2168
Hex Code Ⅸ
HTML Code Ⅸ
HTML Entity
CSS Code \2168
Windows Shortcut
Mac Shortcut
HTML code example
CSS code example
Last updated: 17 Aug 2026