UnicodeCharactercom
ⅰ
U+2170 · SMALL ROMAN NUMERAL ONE

Small Roman Numeral One

  • CodepointU+2170
  • NameSMALL ROMAN NUMERAL ONE
  • Decimal8560
  • BlockNumber Forms (U+2150–U+218F)
  • Plane0 — Basic Multilingual Plane
  • ScriptLatin
  • CategoryNl — Letter Number
  • Unicode version1.1 (1993)
  • Bidi classL — Left-to-Right
  • Combining class0
  • East Asian widthA — Ambiguous
  • MirroredNo

About this character

U+2170 (ⅰ) is SMALL ROMAN NUMERAL ONE, a letterlike number in the Number Forms block. It belongs to the Latin script. It was added in Unicode 1.1 (1993).

Its uppercase form is U+2160 Ⅰ.

It is a compatibility variant of U+0069 i (compatibility decomposition <compat>). NFC and NFD leave it alone, but NFKC and NFKD replace it with U+0069 i. Search engines, identifier checks and username systems that apply NFKC will treat the two as the same text.

It has the numeric value 1.

Its East Asian Width is Ambiguous: it takes one column in Western contexts and two in East Asian legacy contexts, a common cause of misaligned tables in terminals.

How to type ⅰ

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Encodings & escapes

UTF-8 encoder →
UTF-8E2 85 B03 bytes
UTF-1621701 code unit
UTF-32000021704 bytes
HTML decimal&#8560;
HTML hex&#x2170;
CSS\2170in content: "…"
JavaScript\u2170
JSON\u2170
Python\u2170
Python\N{SMALL ROMAN NUMERAL ONE}by name
Java / C#\u2170
C / C++\u2170universal character name
Rust / Swift / PHP\u{2170}
Go\u2170
Ruby\u2170
Excel / Sheets=UNICHAR(8560)
URL-encoded%E2%85%B0percent-encoded UTF-8
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Normalization forms

Normalizer →
NFCunchanged
NFDunchanged
NFKCU+0069 i
NFKDU+0069 i
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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+0069iLatin Small Letter I U+0131ıLatin Small Letter Dotless I U+0269ɩLatin Small Letter Iota U+026AɪLatin Letter Small Capital I U+02DB˛Ogonek U+037AͺGreek Ypogegrammeni U+03B9ιGreek Small Letter Iota U+0456іCyrillic Small Letter Byelorussian-Ukrainian I U+04CFӏCyrillic Small Letter Palochka U+1FBEιGreek Prosgegrammeni U+2139ℹInformation Source U+2148ⅈDouble-Struck Italic Small I U+2373⍳APL Functional Symbol Iota U+FF49ｉFullwidth Latin Small Letter I U+1D422𝐢Mathematical Bold Small I U+1D456𝑖Mathematical Italic Small I
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Nearby in Number Forms

All in block →
U+216AⅪRoman Numeral Eleven U+216BⅫRoman Numeral Twelve U+216CⅬRoman Numeral Fifty U+216DⅭRoman Numeral One Hundred U+216EⅮRoman Numeral Five Hundred U+216FⅯRoman Numeral One Thousand U+2171ⅱSmall Roman Numeral Two U+2172ⅲSmall Roman Numeral Three U+2173ⅳSmall Roman Numeral Four U+2174ⅴSmall Roman Numeral Five U+2175ⅵSmall Roman Numeral Six U+2176ⅶSmall Roman Numeral Seven