U+FB01 "fi" Latin Small Ligature Fi Unicode Character

Unicode Version 17.0

U+FB01 "fi" Latin Small Ligature Fi is a typographic ligature that combines the letters f and i into a single glyph, historically used in printing to improve readability and aesthetic flow by merging the overhang of the f with the dot of the i. It is part of the Latin Extended Additional block, and while it preserves the visual appearance of a traditional ligature, its use in modern digital text is often discouraged in favor of the separate characters f and i, as relying on such precomposed forms can complicate searching, sorting, and accessibility. This character is distinct from the alphabetic combination "fi" in encoded form, though it typically renders identically when a font supports automatic ligatures.

General Properties

Code Point U+FB01
Version Added 1.1
Name Latin Small Ligature Fi
Block Alphabetic Presentation Forms
General Category Lowercase Letter
Canonical Combining Class Not Reordered
Bidirectional Class Left To Right
Decomposition Type Compat
Decomposition Mapping "f" U+0066 Latin Small Letter F
"i" U+0069 Latin Small Letter I

Encodings

HTML Decimal Encoding fi
HTML Hex Encoding fi
UTF-8 Encoding 0xEF 0xAC 0x81
UTF-16 Encoding 0xFB01
UTF-32 Encoding 0x0000FB01
C/C++/Java Escape \ufb01

Unicode Properties

NFC Quick Check Yes
NFD Quick Check Yes
Numeric Type None
Numeric Value NaN
Line Break Alphabetic
Lowercase Yes
Uppercase Code Point "F" U+0046 Latin Capital Letter F
"I" U+0049 Latin Capital Letter I
Titlecase Code Point "F" U+0046 Latin Capital Letter F
"i" U+0069 Latin Small Letter I
Case Folding "f" U+0066 Latin Small Letter F
"i" U+0069 Latin Small Letter I
Cased Yes
Changes When Casefolded Yes
Changes When Casemapped Yes
Changes When NFKC Casefolded Yes
Changes When Titlecased Yes
Changes When Uppercased Yes
NFKC Casefold "f" U+0066 Latin Small Letter F
"i" U+0069 Latin Small Letter I
NFKC Simple Casefold "f" U+0066 Latin Small Letter F
"i" U+0069 Latin Small Letter I
Script Latin
Script Extensions Latin
Indic Syllabic Category Other
ID Start Yes
XID Start Yes
ID Continue Yes
XID Continue Yes
Alphabetic Yes
Vertical Orientation Rotated
Grapheme Base Yes
Grapheme Cluster Break Other
Word Break Alphabetic letter
Sentence Break Lower