⇔ Special characters
Arrows · U+21D4
| Unicode | U+21D4 (8660) |
|---|---|
| HTML entity | ⇔ |
| Named entity | ⇔ |
| CSS | content: "\21D4" |
| JavaScript | "\u21D4" |
| URL encoded | %E2%87%94 |
| UTF-8 size | 3 bytes |
| Category | Arrows |
For pointing a direction — shorter than a word and understood at a glance in tables and signs.
How to read this
- A Unicode code point is a name tag unique to each character. Different fonts, same number — still the same character.
- In HTML, the numeric form &#number; works everywhere. Named entities like ♥ read nicer but exist only for some characters.
- In CSS, use a backslash and hexadecimal: content: "\2764".
- If the character shows as a box, the copy did not fail — that font simply has no glyph for it. Another font will show it.
Frequently asked questions
Q. What is the Unicode code point of ⇔?
U+21D4, which is 8660 in decimal. Stored as UTF-8 it takes 3 bytes.
Q. How do I write ⇔ in HTML?
Use ⇔ and every browser shows the same character. The named form ⇔ also works.
Q. How do I use ⇔ in CSS or JavaScript?
In CSS, content: "\21D4". In JavaScript, "\u21D4". In a URL it becomes %E2%87%94.
Q. What kind of character is ⇔?
It belongs to the arrows group. The rest of that group is listed further down this page, ready to copy.