∑ Special characters
Maths · U+2211
| Unicode | U+2211 (8721) |
|---|---|
| HTML entity | ∑ |
| Named entity | ∑ |
| CSS | content: "\2211" |
| JavaScript | "\u2211" |
| URL encoded | %E2%88%91 |
| UTF-8 size | 3 bytes |
| Category | Maths |
Symbols for formulas. Most are not on the keyboard, so people copy them.
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+2211, which is 8721 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: "\2211". In JavaScript, "\u2211". In a URL it becomes %E2%88%91.
Q. What kind of character is ∑?
It belongs to the maths group. The rest of that group is listed further down this page, ready to copy.