U+223F "∿" Sine Wave Unicode Character
Unicode Version 17.0
∿
U+223F "∿" Sine Wave is a typographic symbol representing the mathematical sine wave, a continuous, smooth oscillation commonly used in physics, engineering, and signal processing to describe periodic phenomena such as alternating current, sound waves, and harmonic motion. Visually it resembles a single, stylized, wavy line curving above and below a central axis, differing slightly from the more angular tilde character. Its inclusion in the Unicode standard allows for precise representation in digital text, notation, and diagrams where a dedicated sine wave symbol is needed, especially in contexts where a clear, non-linguistic waveform is required.
General Properties
| Code Point | U+223F |
| Version Added | 1.1 |
| Name | Sine Wave |
| Block | Mathematical Operators |
| General Category | Math Symbol |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Other Neutral |
| Mirrored | Yes |
Encodings
| HTML Decimal Encoding | ∿ |
| HTML Hex Encoding | ∿ |
| UTF-8 Encoding | 0xE2 0x88 0xBF |
| UTF-16 Encoding | 0x223F |
| UTF-32 Encoding | 0x0000223F |
| C/C++/Java Escape | \u223f |
Unicode Properties
| NFC Quick Check | Yes |
| NFD Quick Check | Yes |
| NFKC Quick Check | Yes |
| NFKD Quick Check | Yes |
| Numeric Type | None |
| Numeric Value | NaN |
| Line Break | Alphabetic |
| Script | Common |
| Script Extensions | Common |
| Indic Syllabic Category | Other |
| Pattern Syntax | Yes |
| Math | Yes |
| Vertical Orientation | Rotated |
| Grapheme Base | Yes |
| Grapheme Cluster Break | Other |
| Word Break | Other |
| Sentence Break | Other |