Unicode Character "∯" (U+222F)

The character (Surface Integral) is represented by the Unicode codepoint U+222F. It is encoded in the Mathematical Operators block, which belongs to the Basic Multilingual Plane. It was added to Unicode in version 1.1 (June, 1993). It is HTML encoded as ∯.

Main Unicode Properties

Name Surface Integral
Unicode Codepoint U+222F
Unicode Version 1.1 (June, 1993)
Block Mathematical Operators
Plane Basic Multilingual Plane

Bidirectional Data

Bidirectional class Other Neutral (ON)
Is mirrored? Yes

Other Unicode Data

Category Math Symbol
Script Code for undetermined script
Combining Class Not Reordered
Decomposition mapping

U+222F Conversion

HTML (decimal) ∯
HTML (hex) ∯
HTML (named) ∯
URL Escape Code %E2%88%AF
CSS \00222F
JavaScript, JSON \u222F
C, C++, Java \u222F
Python \u222F
Rust \u{222F}
Ruby \u222F

How to type "∯"

  • Windows ?: Hold Alt, then type 2 2 2 F. Release Alt.
  • Mac ?: Hold Alt ⌥, then type 2 2 2 F. Release Alt.


  • Times, Times New Roman, serif
  • Helvetica, Arial, sans-serif
  • Courier, Courier New, monospace

UTF Encodings

UTF-8 (hex) 0xE2 0x88 0xAF
UTF-16 (hex) 0x222F
UTF-32 (hex) 0x0000222F