U+00CF · Latin-1 Supplement

Latin Capital Letter I with Diaeresis Ï

Capital I with diaeresis is the uppercase form of ï. It is used in French, Dutch, Catalan, and Afrikaans to show that the I is pronounced separately from the vowel before it. It is uncommon as an initial letter and appears mostly in all-caps words and a handful of names.

WindowsAlt 0207

MacOption + U, then Shift + I

UnicodeU+00CF

HTMLÏ

ÏU+00CF

Character codes

Unicode code point	`U+00CF`
Decimal	`207`
HTML named entity	`Ï`
HTML (hex)	`Ï`
HTML (decimal)	`Ï`
CSS	`\00CF`
JavaScript	`\u00CF`
Python	`\u00CF`
UTF-8 bytes	`C3 8F`
UTF-16	`00CF`
URL-encoded	`%C3%8F`

Character details

Official name	LATIN CAPITAL LETTER I WITH DIAERESIS
Unicode block	Latin-1 Supplement
General category	Uppercase Letter (Lu)
SymbolHero category	Accented Letters
Decomposition	`U+0049 U+0308`
Lowercase	ï Latin Small Letter I with Diaeresis
Emoji	No

How to type Ï

Windows

Hold Alt and type 0207 on the numeric keypad (Num Lock on), then release Alt. Alt 0207 uses the Windows-1252 code page.
In Microsoft Word or Outlook: type 00CF then press Alt + X.
Open Character Map (search “Character Map” in Start), tick “Advanced view”, search for “latin capital letter i with diaeresis”, then Select and Copy.

Mac

Press Option + U, then Shift + I (US English keyboard layout).
Press Control + Command + Space to open the Character Viewer, search “latin capital letter i with diaeresis”, and double-click the result.
With the Unicode Hex Input keyboard enabled (System Settings → Keyboard → Input Sources), hold Option and type 00CF.

iPhone & Android

On iPhone and most Android keyboards, press and hold the I key and slide to Ï. On a Mac, holding the key down works the same way.
Tap Copy at the top of this page, then long-press where you want it and choose Paste.

Docs & web

Google Docs: Insert → Special characters, then search “latin capital letter i with diaeresis” or enter U+00CF.
HTML: Ï or Ï
Excel / Google Sheets: =UNICHAR(207)

Examples

NAÏF
HAÏTI
MAÏS
CAÏN

Good to know

Don’t mix it up: Often confused with Ї (U+0407), the Ukrainian Cyrillic letter yi, which looks identical but belongs to a different script.

Tip: Mixing Cyrillic Ї into Latin text breaks search and spell-checking, so make sure you copy the Latin character.

Display: the character itself is always the same code point, but its shape comes from the font on the device showing it. If you see an empty box, the font lacks this glyph—the text is still correct.