const.id

html-entity

⇄

⇄

⇄

HTML named character reference ⇄ maps to U+21C4.

Mapping

Named reference
⇄
Code point(s)
U+21C4
Decimal
8644
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+21C4

Same character

Other entities

Entities that produce this code point

Source

Unicode
16.0.0
WHATWG
snapshot 2026-08-02