Rightwards Arrow With Double Vertical Stroke
Block: Arrows
- Symbol
- ⇻
- Unicode
U+21FB- Unicode name
- RIGHTWARDS ARROW WITH DOUBLE VERTICAL STROKE
- Block
- Arrows
- Category
- Symbol, Math
- Type
- Unicode symbol
Rightwards Arrow With Double Vertical Stroke (⇻) is encoded as U+21FB and has the formal Unicode name RIGHTWARDS ARROW WITH DOUBLE VERTICAL STROKE. Unicode classifies it as Symbol, Math in the Arrows block. Its name places it in the arrow/directional family, which gives the page a narrower identity than the glyph alone. Separately encoded named neighbors include ⇺ Leftwards Arrow With Double Vertical Stroke (U+21FA); those records should be compared by name and code point rather than merged because their shapes or terminology are related.
Unicode Identity First, Local Meaning Second
⇻ is encoded as U+21FB and classified as Symbol, Math. Its formal name narrows it to the arrow/directional family rather than leaving the mark as an unidentified shape.
The Unicode identity and the surrounding document answer different questions: the code point tells you which character is present, while the surrounding formula, interface, document, or notation system determines the local interpretation. Keeping those layers separate prevents a visual guess from being treated as a character definition.
Need to identify another character? Use what symbol is ⇻? with the symbol itself, its Unicode value, or a description of how it looks.
Digital Representations of U+21FB
U+21FB = decimal 8699 = HTML ⇻ / ⇻. A Unicode escape-style form is u21FB. Its UTF-8 bytes are E2 87 BB.
Use these identifiers in markup, source code, exports, or character diagnostics when the glyph alone is not enough.
Do Not Collapse Rightwards Arrow With Double Vertical Stroke Into Nearby Named Variants
Unicode stores ⇻ as U+21FB, while nearby records include ⇺ Leftwards Arrow With Double Vertical Stroke (U+21FA). These are separate encoded identities, not alternate font drawings of one character.
The comparison is useful because a shared word in the name, a mirrored direction, or a similar outline can make two symbols appear interchangeable. When the distinction matters, compare the complete Unicode name and code point before replacing one record with another.