U+21A1 "↡" Downwards Two Headed Arrow Unicode Character
Unicode Version 17.0
↡
U+21A1 "↡" Downwards Two Headed Arrow is a typographical symbol classified under the Arrows block, representing a vertical arrow with two arrowheads pointing downward. Unlike a standard single-headed down arrow, this glyph is often used in technical notation, mathematics, or diagramming to indicate a dual or redundant downward direction, movement, or flow. Its design features two distinct arrowheads stacked along the same line, which can signify a stronger emphasis, a double functionality, or a shift between multiple states in specialized contexts such as electronic schematics, logical diagrams, or older computing interfaces where standard arrow symbols were insufficient.
General Properties
| Code Point | U+21A1 |
| Version Added | 1.1 |
| Name | Downwards Two Headed Arrow |
| Unicode 1.0 Name | Down Two Headed Arrow |
| Block | Arrows |
| General Category | Other Symbol |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Other Neutral |
Encodings
| HTML Decimal Encoding | ↡ |
| HTML Hex Encoding | ↡ |
| UTF-8 Encoding | 0xE2 0x86 0xA1 |
| UTF-16 Encoding | 0x21A1 |
| UTF-32 Encoding | 0x000021A1 |
| C/C++/Java Escape | \u21a1 |
Unicode Properties
| NFC Quick Check | Yes |
| NFD Quick Check | Yes |
| NFKC Quick Check | Yes |
| NFKD Quick Check | Yes |
| Numeric Type | None |
| Numeric Value | NaN |
| Line Break | Alphabetic |
| Script | Common |
| Script Extensions | Common |
| Indic Syllabic Category | Other |
| Pattern Syntax | Yes |
| Math | Yes |
| Other Math | Yes |
| Vertical Orientation | Rotated |
| Grapheme Base | Yes |
| Grapheme Cluster Break | Other |
| Word Break | Other |
| Sentence Break | Other |