const.id

html-entity

ο

ο

ο

HTML named character reference ο maps to U+03BF.

Mapping

Named reference
ο
Code point(s)
U+03BF
Decimal
959
Characters
ο

Numeric character references

Named
Decimal
Hex

Usage

Prefer a named reference when the character must survive encoding mistakes or is awkward to type. Numeric references (ο) are always valid HTML for the mapped code point(s).

Related

Unicode

U+03BF

Same character

Other entities

Entities that produce this code point

Source

Unicode
16.0.0
WHATWG
snapshot 2026-08-02