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Aug 08, 2026
HTML Entity Detail
HTML Entity - Proportional To
Proportional To is a mathematical operators, comparison symbols, and notation characters. This HTML entity enables web developers to display this character reliably across all browsers without encoding issues.
Symbol preview
∝
Unicode
U+221D
HTML entity
∝
CSS code
\221D
Usage Examples
Use this HTML entity in mathematical expressions and equations. For example, ≠ for not equal, ≤ for less than or equal, ∞ for infinity.
Related Entities
Common Mistakes
⚠️
Mistake: Using ~ instead of ∝ for proportional notation
Fix: Use ∝ (∝) for "proportional to". The tilde ~ or a simple wavy line is a different character.
⚠️
Mistake: Confusing ∝ (proportional) with ∼ (similar to)
Fix: Use ∝ for proportional relationships (y ∝ x) and ∼ for similarity (triangle ABC ∼ triangle DEF).
Proportional To
Select any code to highlight it before copying.
Category: Math Symbol
| Unicode | U+221D |
|---|---|
| Hex Code | ∝ |
| HTML Code | ∝ |
| HTML Entity | ∝ |
| CSS Code | \221D |
| Windows Shortcut | |
| Mac Shortcut | |
HTML code example
CSS code example
Last updated: 17 Aug 2026
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