UnicodeCharactercom
Ι
U+0399 · GREEK CAPITAL LETTER IOTA

Greek Capital Letter Iota

  • CodepointU+0399
  • NameGREEK CAPITAL LETTER IOTA
  • Decimal921
  • BlockGreek and Coptic (U+0370–U+03FF)
  • Plane0 — Basic Multilingual Plane
  • ScriptGreek
  • CategoryLu — Uppercase Letter
  • Unicode version1.1 (1993)
  • Bidi classL — Left-to-Right
  • Combining class0
  • East Asian widthA — Ambiguous
  • MirroredNo

About this character

U+0399 (Ι) is GREEK CAPITAL LETTER IOTA, an uppercase letter in the Greek and Coptic block. It belongs to the Greek script. It was added in Unicode 1.1 (1993).

Its lowercase form is U+03B9 ι.

How to type Ι

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Encodings & escapes

UTF-8 encoder →
UTF-8CE 992 bytes
UTF-1603991 code unit
UTF-32000003994 bytes
HTML namedΙnamed character reference
HTML decimalΙ
HTML hexΙ
CSS\399in content: "…"
JavaScript\u0399
JSON\u0399
Python\u0399
Python\N{GREEK CAPITAL LETTER IOTA}by name
Java / C#\u0399
C / C++\u0399universal character name
Rust / Swift / PHP\u{399}
Go\u0399
Ruby\u0399
Excel / Sheets=UNICHAR(921)
URL-encoded%CE%99percent-encoded UTF-8
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Looks similar

Characters that Unicode’s security data (UTS #39 confusables) lists as visually confusable with this one. Useful for spotting lookalike spoofing in URLs and usernames.

U+00311Digit One U+0049ILatin Capital Letter I U+006ClLatin Small Letter L U+007C|Vertical Line U+0196ƖLatin Capital Letter Iota U+01C0ǀLatin Letter Dental Click U+0406ІCyrillic Capital Letter Byelorussian-Ukrainian I U+04C0ӀCyrillic Letter Palochka U+05C0׀Hebrew Punctuation Paseq U+05D5וHebrew Letter Vav U+05DFןHebrew Letter Final Nun U+0627اArabic Letter Alef U+0661١Arabic-Indic Digit One U+06F1۱Extended Arabic-Indic Digit One U+16C1ᛁRunic Letter Isaz Is Iss I U+2110ℐScript Capital I
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Characters built on Ι

U+038AΊGreek Capital Letter Iota with Tonos U+03AAΪGreek Capital Letter Iota with Dialytika U+1F38ἸGreek Capital Letter Iota with Psili U+1F39ἹGreek Capital Letter Iota with Dasia U+1FD8ῘGreek Capital Letter Iota with Vrachy U+1FD9ῙGreek Capital Letter Iota with Macron U+1FDAῚGreek Capital Letter Iota with Varia U+1D6B0𝚰Mathematical Bold Capital Iota U+1D6EA𝛪Mathematical Italic Capital Iota U+1D724𝜤Mathematical Bold Italic Capital Iota U+1D75E𝝞Mathematical Sans-Serif Bold Capital Iota U+1D798𝞘Mathematical Sans-Serif Bold Italic Capital Iota
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Nearby in Greek and Coptic

All in block →
U+0393ΓGreek Capital Letter Gamma U+0394ΔGreek Capital Letter Delta U+0395ΕGreek Capital Letter Epsilon U+0396ΖGreek Capital Letter Zeta U+0397ΗGreek Capital Letter Eta U+0398ΘGreek Capital Letter Theta U+039AΚGreek Capital Letter Kappa U+039BΛGreek Capital Letter Lamda U+039CΜGreek Capital Letter Mu U+039DΝGreek Capital Letter Nu U+039EΞGreek Capital Letter Xi U+039FΟGreek Capital Letter Omicron