const.id

html-entity

∅

∅

∅

HTML named character reference ∅ maps to U+2205.

Mapping

Named reference
∅
Code point(s)
U+2205
Decimal
8709
Characters
∅

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 (∅) are always valid HTML for the mapped code point(s).

Related

Unicode

U+2205

Same character

Other entities

Entities that produce this code point

Source

Unicode
16.0.0
WHATWG
snapshot 2026-08-02