Greek Small Pi HTML entity π

π is the HTML entity for Greek Small Pi π (U+03C0). Copy the decimal π and hex π codes plus CSS, JavaScript, Python and URL escapes.

Entity: π
Code point: U+03C0
Unicode name: GREEK SMALL LETTER PI
Block: Greek and Coptic
Category: Lowercase letter (Ll)
Since: Unicode 1.1
Defined in: HTML 4.01 and HTML5

Codes to copy

HTML named	`π`Works in HTML; in XML only & < > " ' are predefined.
HTML decimal	`π`Works in HTML and XML.
HTML hex	`π`Works in HTML and XML.
CSS	`content: "\3C0";`In a stylesheet, for ::before and ::after.
JavaScript	`"\u03C0"`Also valid in JSON.
Python	`"\u03c0"`Python 3 string literal.
Python by name	`"\N{GREEK SMALL LETTER PI}"`Readable alternative using the Unicode name.
URL	`%CF%80`Percent-encoded UTF-8 bytes, for a path or query value.
UTF-8 bytes	`CF 80`2 bytes.
UTF-16	`03C0`1 code unit, which is what JavaScript length counts.

When to use it

The Greek small letter pi, used for the circle constant. The capital Π is a different character, and for the product sign in maths there is the dedicated ∏.

The name dates from HTML 4, so it works in every browser and in old email clients.

More greek letters

All greek letters · Every HTML entity · Encode or decode text

Source: the WHATWG HTML Standard list of named character references and the Unicode Character Database (Unicode 18.0).