| Character | ⇔ |
| Name | Left Right Double Arrow |
| Unicode Code Point | U+21D4 |
| Decimal Value | 8660 |
| Hex Value | 0x21D4 |
| Category | Arrows |
| Windows Alt Code | Not available — use copy/paste |
| Word Alt+X Code | 21D4 + Alt+X |
| Mac Shortcut | Not available — use copy/paste |
| HTML Entity | ⇔ |
| HTML Code (Dec / Hex) | ⇔ / ⇔ |
| CSS Content Code | content: "\21D4"; |
| JavaScript Unicode Escape | "\u{21D4}" |
Left Right Double Arrow is used to indicate direction, sequence, or logical flow — common in UI design (navigation), technical diagrams (flowcharts), mathematics (implication and mapping), and instructional writing (step-by-step guides).
Unicode block: Arrows (U+2190–U+21FF). The Arrows block standardizes directional symbols that were previously drawn inconsistently across different fonts and diagram tools, giving software and documents a consistent way to represent direction, flow, and logical implication.
At Unicode code point U+21D4 (decimal 8660), Left Right Double Arrow is the 69th of 112 characters cataloged in this category on How To Type Any Symbol. In terms of typing methods, like most characters outside the 0–255 legacy codepage range, it has no dedicated Alt-code or single-key shortcut on Windows or Mac, so copy-paste is the standard, universal method for typing it. Regardless of platform, clicking the copy button above places the exact character on your clipboard, ready to paste into any application that accepts Unicode text.
💡 Good to know: In UI/UX design, arrow direction has strong conventional meaning to users (right = forward/next, left = back) — reversing this convention can confuse users.
No alt code available — click the copy button above and paste with Ctrl+V.
No dedicated shortcut — click the copy button above and paste with Cmd+V.
Click the symbol above to copy it, then paste anywhere — works on every device and OS.
Use the entity ⇔ in your HTML.
Windows does not have an Alt code for Left Right Double Arrow. Copy ⇔ from this page and paste it with Ctrl+V.
There is no dedicated Mac shortcut for Left Right Double Arrow. Copy ⇔ from this page and paste it with Command+V.
Left Right Double Arrow (⇔) is Unicode U+21D4, decimal 8660.
Use the HTML entity ⇔, or the numeric code ⇔ (hex ⇔).