U+223F · Math symbol
HTML entity
∿
LaTeX
\sinewave
Sine Wave Symbol ∿
∿ is sine wave, U+223F — \sinewave in LaTeX. It was added in Unicode 1.1, and Unicode files it under Math symbol.
Also known as
- alternating current
Codes & technical data
| Unicode | U+223F | |
|---|---|---|
| HTML hex | ∿ | |
| HTML decimal | ∿ | |
| CSS | \223F | |
| JavaScript | \u{223F} | |
| Python | \U0000223F | |
| Java / C# | \u223F | |
| Rust | \u{223f} | |
| Swift | \u{223F} | |
| PHP | \u{223F} | |
| URL encoded | %E2%88%BF | |
| UTF-8 bytes | E2 88 BF | |
| UTF-16 bytes | 223F | |
| Base64 | 4oi/ | |
| Decimal | 8767 | |
| HTML entity | ∿ | |
| LaTeX | \sinewave | |
| Category | Math symbol (Sm) | |
| 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.
Nearby in Mathematical Operators
The operators mathematics and programming share — set theory, logic, calculus, comparison. Almost every character here has a LaTeX command, which is usually the fastest way to name the one you mean.
How to type ∿
| Windows | Type 223F then press Alt+X |
|---|---|
| macOS | Press Ctrl+Cmd+Space, then search for “sine wave” |
| Linux | Press Ctrl+Shift+U, type 223f, press Enter |
| HTML | ∿ |
About Unicode’s Math symbol category
Unicode classifies this as a mathematical symbol, which means software that lays out formulas treats it as an operator or relation and gives it spacing accordingly, rather than setting it tight against its neighbours like a letter.
Frequently asked questions
- How do I type the ∿ sine wave symbol?
- On Windows, type 223F and press Alt+X. On Linux press Ctrl+Shift+U then 223f. On any system the quickest route is the copy button on this page.
- What is the code for ∿?
- Sine Wave is U+223F, written in HTML as ∿ and in LaTeX as \sinewave. In UTF-8 it takes 3 bytes. The table above lists every escape format.
- What kind of character is ∿?
- Sine Wave is filed under Math symbol in the Mathematical Operators block, and was introduced in Unicode 1.1. Unicode classifies this as a mathematical symbol, which means software that lays out formulas treats it as an operator or relation and gives it spacing accordingly, rather than setting it tight against its neighbours like a letter.