UnicodeCharactercom
∭
U+222D · TRIPLE INTEGRAL

Triple Integral

  • CodepointU+222D
  • NameTRIPLE INTEGRAL
  • Decimal8749
  • BlockMathematical Operators (U+2200–U+22FF)
  • Plane0 — Basic Multilingual Plane
  • ScriptCommon
  • CategorySm — Math Symbol
  • Unicode version1.1 (1993)
  • Bidi classON — Other Neutral
  • Combining class0
  • East Asian widthN — Neutral
  • MirroredYes

About this character

U+222D (∭) is TRIPLE INTEGRAL, a mathematical symbol in the Mathematical Operators block. Its script is Common: it is shared by many writing systems rather than belonging to one. It was added in Unicode 1.1 (1993).

It is a compatibility variant of U+222B ∫ + U+222B ∫ + U+222B ∫ (compatibility decomposition <compat>). NFC and NFD leave it alone, but NFKC and NFKD replace it with U+222B ∫ + U+222B ∫ + U+222B ∫. Search engines, identifier checks and username systems that apply NFKC will treat the two as the same text.

It is a mirrored character: in right-to-left text renderers draw its mirror image.

How to type ∭

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Encodings & escapes

UTF-8 encoder →
UTF-8E2 88 AD3 bytes
UTF-16222D1 code unit
UTF-320000222D4 bytes
HTML named&tint;named character reference
HTML named&iiint;named character reference
HTML decimal&#8749;
HTML hex&#x222D;
CSS\222Din content: "…"
JavaScript\u222D
JSON\u222D
Python\u222D
Python\N{TRIPLE INTEGRAL}by name
Java / C#\u222D
C / C++\u222Duniversal character name
Rust / Swift / PHP\u{222D}
Go\u222D
Ruby\u222D
Excel / Sheets=UNICHAR(8749)
URL-encoded%E2%88%ADpercent-encoded UTF-8
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Normalization forms

Normalizer →
NFCunchanged
NFDunchanged
NFKCU+222B ∫ + U+222B ∫ + U+222B ∫
NFKDU+222B ∫ + U+222B ∫ + U+222B ∫
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Nearby in Mathematical Operators

All in block →
U+2227∧Logical and U+2228∨Logical or U+2229∩Intersection U+222A∪Union U+222B∫Integral U+222C∬Double Integral U+222E∮Contour Integral U+222F∯Surface Integral U+2230∰Volume Integral U+2231∱Clockwise Integral U+2232∲Clockwise Contour Integral U+2233∳Anticlockwise Contour Integral