U+25B3 · Other symbol
HTML entity
△
LaTeX
\bigtriangleup
White Up-Pointing Triangle Symbol △
△ is white up-pointing triangle. Write it in HTML as △ or paste the character directly. It was added in Unicode 1.1, and Unicode files it under Other symbol.
Also known as
- trine
Unicode 1.0 called this character white up pointing triangle. The standard renamed it later, but documents, fonts and font-editing tools from that era still use the old name.
Codes & technical data
| Unicode | U+25B3 | |
|---|---|---|
| HTML hex | △ | |
| HTML decimal | △ | |
| CSS | \25B3 | |
| JavaScript | \u{25B3} | |
| Python | \U000025B3 | |
| Java / C# | \u25B3 | |
| Rust | \u{25b3} | |
| Swift | \u{25B3} | |
| PHP | \u{25B3} | |
| URL encoded | %E2%96%B3 | |
| UTF-8 bytes | E2 96 B3 | |
| UTF-16 bytes | 25B3 | |
| Base64 | 4paz | |
| Decimal | 9651 | |
| HTML entity | △ | |
| LaTeX | \bigtriangleup | |
| Category | Other symbol (So) | |
| Introduced | Unicode 1.1 | |
Will △ survive being pasted?
- Normalisation. Yes. △ is unchanged by NFKC, so it survives normalising systems intact.
- Legacy encodings. △ is Unicode-only — it has no Latin-1 equivalent, so a system stuck on an 8-bit encoding cannot represent it.
- Size. 3 bytes in UTF-8. Character-limited fields — SMS, bios, some form validators — usually count bytes, not characters.
Unicode cross-references
The standard points readers of △ at these characters — usually because they look alike, or because one is the correct choice where the other is often used by mistake.
Other triangle characters
Unicode names 24 characters ending in “triangle”. They differ by direction, weight or decoration rather than by meaning.
Nearby in Geometric Shapes
Circles, squares, triangles and diamonds in filled and outlined forms, at several sizes. The bullet characters most lists use come from here.
How to type △
| Windows | Type 25B3 then press Alt+X |
|---|---|
| macOS | Press Ctrl+Cmd+Space, then search for “white up-pointing triangle” |
| Linux | Press Ctrl+Shift+U, type 25b3, press Enter |
| HTML | △ |
About Unicode’s Other symbol category
Unicode files this under "other symbol" — the catch-all for pictographs, signs and marks that are neither maths, currency, nor letter-like. It is the largest symbol category in the standard.
Frequently asked questions
- How do I type the △ white up-pointing triangle symbol?
- On Windows, type 25B3 and press Alt+X. On Linux press Ctrl+Shift+U then 25b3. On any system the quickest route is the copy button on this page.
- What is the code for △?
- White Up-Pointing Triangle is U+25B3, written in HTML as △ and in LaTeX as \bigtriangleup. In UTF-8 it takes 3 bytes. The table above lists every escape format.
- What kind of character is △?
- White Up-Pointing Triangle is filed under Other symbol in the Geometric Shapes block, and was introduced in Unicode 1.1. Unicode files this under "other symbol" — the catch-all for pictographs, signs and marks that are neither maths, currency, nor letter-like. It is the largest symbol category in the standard.