U+21C5 "⇅" Upwards Arrow Leftwards of Downwards Arrow Unicode Character
Unicode Version 17.0
⇅
U+21C5 "⇅" Upwards Arrow Leftwards of Downwards Arrow is a special symbol that combines two vertical arrows into a single glyph, where an upward-pointing arrow is positioned to the left of a downward-pointing arrow. This character is often used in mathematical notation, technical diagrams, and certain data visualizations to denote a bidirectional vertical relationship, such as a two-way flow, a coupling, or an alternating motion between two states. Its unique arrangement visually suggests both an ascent and a descent occurring in parallel or sequence, making it useful for representing concepts like up and down cycles, paired opposing forces, or coordinated vertical movement in fields such as physics, engineering, or user interface design.
General Properties
| Code Point | U+21C5 |
| Version Added | 1.1 |
| Name | Upwards Arrow Leftwards of Downwards Arrow |
| Unicode 1.0 Name | Up Arrow Left of down 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 0x87 0x85 |
| UTF-16 Encoding | 0x21C5 |
| UTF-32 Encoding | 0x000021C5 |
| C/C++/Java Escape | \u21c5 |
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 |