U+222F "∯" Surface Integral Unicode Character

Unicode Version 18.0

∯
Source: Noto Sans Math Source: Browser Default

U+222F "∯" Surface Integral is a mathematical symbol used to denote integration over a two dimensional surface in three dimensional space, commonly applied in calculus, physics, and engineering to calculate flux through a closed or open surface, generalizing line integrals to areas.

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Encodings

HTML Decimal Encoding
∯
HTML Hex Encoding
∯
UTF-8 Encoding
0xE2 0x88 0xAF
UTF-16 Encoding
0x222F
UTF-32 Encoding
0x0000222F
C/C++/Java Escape
\u222f