Iota Symbol Copy and Paste

Copy ι, the Greek letter iota, or take the capital Ι, an accented iota or the turned ℩.

ιGreek small letter iotaU+03B9Ready to copy

37 iota characters and strings. Tap any value to copy it.

37 iota characters and strings. A character and its name both copy the character. A code copies the code.
Character	Name	Code point	Option keys	HTML	LaTeX
	U+03B9. The Greek alphabet's ninth letter, which writes the vowel i. As a Greek numeral it is 10. It has no Alt code. ι in HTML and \iota in LaTeX.
	U+0399. The capital, drawn like a Latin I and a different character. Ι in HTML. It has no Alt code and no LaTeX macro of its own.
	U+03AF. Small iota with the tonos, the one accent of modern Greek.
	U+03CA. Small iota with a diaeresis. The two dots show that the iota is said on its own and does not join the vowel before it.
	U+0390. Small iota with a diaeresis and the tonos, the one accent of modern Greek.
	U+1D704. Small iota in italic, the slanted letter of a printed formula: U+03B9 in a math font, by its Unicode definition.
	U+037A. The iota subscript on its own: the tiny iota that old Greek spelling writes under a long vowel. Unicode names it ypogegrammeni.
	U+2129. An iota turned upside down. Logic used it for the one thing that fits a description. &iiota; in HTML.
	U+0269. The Latin iota, a phonetic sign for a semi-high front unrounded vowel. The phonetic alphabet now prefers U+026A.
	U+2373. The iota of the APL programming language, which makes a run of whole numbers in order.
	U+1D6CA. Small iota in upright bold: U+03B9 in a math font, by its Unicode definition.
	U+1D73E. Small iota in bold italic: U+03B9 in a math font, by its Unicode definition.
	U+1D778. Small iota in bold with no serifs: U+03B9 in a math font, by its Unicode definition.
	U+1D7B2. Small iota in bold italic with no serifs: U+03B9 in a math font, by its Unicode definition.
	U+1D6B0. Capital iota in upright bold: U+0399 in a math font, by its Unicode definition.
	U+1D6EA. Capital iota in italic, the slanted letter of a printed formula: U+0399 in a math font, by its Unicode definition.
	U+1D724. Capital iota in bold italic: U+0399 in a math font, by its Unicode definition.
	U+1D75E. Capital iota in bold with no serifs: U+0399 in a math font, by its Unicode definition.
	U+1D798. Capital iota in bold italic with no serifs: U+0399 in a math font, by its Unicode definition.
	U+038A. Capital iota with the tonos, the one accent of modern Greek.
	U+03AA. Capital iota with a diaeresis. The two dots show that the iota is said on its own and does not join the vowel before it.
	U+1FBE. The iota adscript: an iota written beside a vowel in place of under it. Unicode treats it as U+03B9, and normalized text holds that letter.
	U+1FB3. Alpha with an iota subscript: a long a that was once followed by an iota, which stopped being said early on.
	U+1FC3. Eta with an iota subscript, the second of the three vowels that take the mark.
	U+1FF3. Omega with an iota subscript, the third of the three.
	U+2378. The APL iota with a bar under it, a separate sign of the same language.
	Made of U+2373 and U+0034. The APL iota and the digit four. In APL it gives 1 2 3 4.
	Made of U+03B9, U+03CE, U+03C4 and U+03B1. Iota, omega with the tonos, tau and alpha: the name of the letter as Greek writes it, said YO-ta.
	U+0196. The capital of the Latin iota, a letter of African languages.
	U+1DA5. A raised Latin iota: a superscript U+0269 by its Unicode definition. Added in Unicode 4.1 (2005).
	U+1D7C. A Latin iota with a stroke through it, a letter used by scholars of Russian. Added in Unicode 4.1 (2005).
	U+2C92. The Coptic letter in iota's place, named iauda in Unicode. The Coptic alphabet descends from the Greek one and got code points of its own in Unicode 4.1 (2005).
	U+2C93. Small iauda, the lowercase of the Coptic iota.
	U+0406. The Cyrillic letter i of Ukrainian and Belarusian, which arose from iota. It is drawn like the Latin and the Greek capital.
	U+0456. The small letter of the Cyrillic pair, dotted like a Latin i.
	U+0131. The dotless i of Turkish and Azerbaijani, a Latin letter. &imath; in HTML and \i in LaTeX.
	U+026A. A Latin small capital I, the phonetic letter that took over from the Latin iota.

Next step θ, Θ and ϑ with their codes

How it works

ι is the iota symbol: Greek small letter iota, U+03B9, the ninth letter of the Greek alphabet. The rows add the capital Ι, accented ί, ϊ and ΐ, the subscript ͺ, the turned ℩ and math styles such as 𝜄.

Read the full guide

Iota is the Greek letter for i

Iota writes the vowel i. The capital Ι is drawn like a Latin I but is U+0399, a character of its own. The Latin I and J both arose from iota.

The iota under a vowel

Old Greek spelling writes an iota that is no longer said as a tiny mark under a long vowel, as in ᾳ, ῃ and ῳ. Unicode names the mark ypogegrammeni. ͺ, U+037A, shows it on its own.

Not one iota means not the slightest amount, and the English word jot comes from iota.
ϊ carries a diaeresis: the iota is said on its own and does not join the vowel before it.

Questions and answers

How do I type the iota symbol?

Iota has no Alt code. In a web page ι gives the small letter and Ι the capital, and the numbers ι and Ι do the same. LaTeX prints ι with \iota in math mode.

What does the iota letter stand for?

As a Greek numeral iota is 10. In logic a small ι marks a definite description, and in mathematics an inclusion map. The programming language APL counts with its own iota: ⍳4 gives 1 2 3 4.

What is the upside-down iota?

℩ is the turned iota, U+2129, &iiota; in HTML. Logic used it for the one thing that fits a description.

How do you say iota?

English says eye-OH-ta, with the stress on the second syllable. The Greek name is ιώτα, said YO-ta.

All 37 iota characters and strings

Start here 10

APL functional symbol iota U+2373. The iota of the APL programming language, which makes a run of whole numbers in order.
Greek capital letter iota U+0399. The capital, drawn like a Latin I and a different character. Ι in HTML. It has no Alt code and no LaTeX macro of its own.
Greek small letter iota U+03B9. The Greek alphabet's ninth letter, which writes the vowel i. As a Greek numeral it is 10. It has no Alt code. ι in HTML and \iota in LaTeX.
Greek small letter iota with dialytika U+03CA. Small iota with a diaeresis. The two dots show that the iota is said on its own and does not join the vowel before it.
Greek small letter iota with dialytika and tonos U+0390. Small iota with a diaeresis and the tonos, the one accent of modern Greek.
Greek small letter iota with tonos U+03AF. Small iota with the tonos, the one accent of modern Greek.
Greek ypogegrammeni U+037A. The iota subscript on its own: the tiny iota that old Greek spelling writes under a long vowel. Unicode names it ypogegrammeni.
Latin small letter iota U+0269. The Latin iota, a phonetic sign for a semi-high front unrounded vowel. The phonetic alphabet now prefers U+026A.
Mathematical italic small iota U+1D704. Small iota in italic, the slanted letter of a printed formula: U+03B9 in a math font, by its Unicode definition.
Turned Greek small letter iota U+2129. An iota turned upside down. Logic used it for the one thing that fits a description. &iiota; in HTML.

Show all 37 iota characters and strings (27 more)

Small iota ι 4

Mathematical bold italic small iota U+1D73E. Small iota in bold italic: U+03B9 in a math font, by its Unicode definition.
Mathematical bold small iota U+1D6CA. Small iota in upright bold: U+03B9 in a math font, by its Unicode definition.
Mathematical sans-serif bold italic small iota U+1D7B2. Small iota in bold italic with no serifs: U+03B9 in a math font, by its Unicode definition.
Mathematical sans-serif bold small iota U+1D778. Small iota in bold with no serifs: U+03B9 in a math font, by its Unicode definition.

Capital iota Ι 5

Mathematical bold capital iota U+1D6B0. Capital iota in upright bold: U+0399 in a math font, by its Unicode definition.
Mathematical bold italic capital iota U+1D724. Capital iota in bold italic: U+0399 in a math font, by its Unicode definition.
Mathematical italic capital iota U+1D6EA. Capital iota in italic, the slanted letter of a printed formula: U+0399 in a math font, by its Unicode definition.
Mathematical sans-serif bold capital iota U+1D75E. Capital iota in bold with no serifs: U+0399 in a math font, by its Unicode definition.
Mathematical sans-serif bold italic capital iota U+1D798. Capital iota in bold italic with no serifs: U+0399 in a math font, by its Unicode definition.

Accented iota for Greek text 2

Greek capital letter iota with dialytika U+03AA. Capital iota with a diaeresis. The two dots show that the iota is said on its own and does not join the vowel before it.
Greek capital letter iota with tonos U+038A. Capital iota with the tonos, the one accent of modern Greek.

Iota subscript and adscript 4

Greek prosgegrammeni U+1FBE. The iota adscript: an iota written beside a vowel in place of under it. Unicode treats it as U+03B9, and normalized text holds that letter.
Greek small letter alpha with ypogegrammeni U+1FB3. Alpha with an iota subscript: a long a that was once followed by an iota, which stopped being said early on.
Greek small letter eta with ypogegrammeni U+1FC3. Eta with an iota subscript, the second of the three vowels that take the mark.
Greek small letter omega with ypogegrammeni U+1FF3. Omega with an iota subscript, the third of the three.

Iota as a sign and a word 3

APL functional symbol iota underbar U+2378. The APL iota with a bar under it, a separate sign of the same language.
Iota four Made of U+2373 and U+0034. The APL iota and the digit four. In APL it gives 1 2 3 4.
Iota in Greek Made of U+03B9, U+03CE, U+03C4 and U+03B1. Iota, omega with the tonos, tau and alpha: the name of the letter as Greek writes it, said YO-ta.

Iota in other alphabets 7

Coptic capital letter iauda U+2C92. The Coptic letter in iota's place, named iauda in Unicode. The Coptic alphabet descends from the Greek one and got code points of its own in Unicode 4.1 (2005).
Coptic small letter iauda U+2C93. Small iauda, the lowercase of the Coptic iota.
Cyrillic capital letter Byelorussian-Ukrainian I U+0406. The Cyrillic letter i of Ukrainian and Belarusian, which arose from iota. It is drawn like the Latin and the Greek capital.
Cyrillic small letter Byelorussian-Ukrainian i U+0456. The small letter of the Cyrillic pair, dotted like a Latin i.
Latin capital letter iota U+0196. The capital of the Latin iota, a letter of African languages.
Latin small letter iota with stroke U+1D7C. A Latin iota with a stroke through it, a letter used by scholars of Russian. Added in Unicode 4.1 (2005).
Modifier letter small iota U+1DA5. A raised Latin iota: a superscript U+0269 by its Unicode definition. Added in Unicode 4.1 (2005).

Look-alikes that are not iota 2

Latin letter small capital i U+026A. A Latin small capital I, the phonetic letter that took over from the Latin iota.
Latin small letter dotless i U+0131. The dotless i of Turkish and Azerbaijani, a Latin letter. &imath; in HTML and \i in LaTeX.

How this list was compiled: Names, and the code points they belong to, are from UnicodeData.txt, version 18.0.0 (https://www.unicode.org/Public/18.0.0/ucd/UnicodeData.txt), printed in sentence case; its decomposition field is what says a math alphabet character is a plain letter in a font, or that an accented letter is a letter plus its marks. Aliases, notes and cross-references are from NamesList.txt of the same version (https://www.unicode.org/Public/18.0.0/ucd/NamesList.txt), the version a character was added in is from DerivedAge.txt (https://www.unicode.org/Public/18.0.0/ucd/DerivedAge.txt), and the years are from https://www.unicode.org/history/publicationdates.html. Alt codes are from the code page 437 table (https://www.unicode.org/Public/MAPPINGS/VENDORS/MICSFT/PC/CP437.TXT). HTML entity names are from https://html.spec.whatwg.org/entities.json, the shortest standard name first. LaTeX macros are listed only when LaTeX's own fontdef.dtx (https://github.com/latex3/latex2e/tree/develop/base) declares them, matched to a code point through unicode-math-table.tex (https://github.com/latex3/unicode-math). A cell is empty where no such method exists. What iota is for, as https://en.wikipedia.org/wiki/Iota records it: the ninth letter, the numeral value 10, the vowel i, the iota that stopped being said after a long vowel and is written under it, the three vowels that take it, the phrase not one iota and the word jot, the iota of the APL language and its example, the inclusion map, the definite descriptor of logic, the turned iota, the two ways of saying the name, and the Latin I and J and the Cyrillic letter that arose from iota. The tonos and the diaeresis: https://en.wikipedia.org/wiki/Greek_diacritics. The iota subscript and adscript and their names in Unicode: https://en.wikipedia.org/wiki/Iota_subscript. The Coptic alphabet as a descendant of the Greek one, given code points of its own in Unicode 4.1: https://en.wikipedia.org/wiki/Greek_alphabet. Listed: the two letters, the five with a tonos or a diaeresis, the ten math alphabet forms, the iota subscript and adscript with one example for each vowel, the turned iota and the two APL signs, the Latin, Coptic and Cyrillic letters, two look-alikes, and this site's own strings. Left out: the twenty-eight accented iotas of the Greek Extended block, the combining form of the subscript, the other Greek letters (each has its own page), the other vowels with a subscript and an accent, which the alpha and omega pages have, and the Cyrillic iota, which few fonts draw. The Start here group, the made rows and the order are this site's own choice. All sources were read on 1 October 2026; Wikipedia text is CC BY-SA 4.0 and restated in this site's own words. Licence: own work (facts from the Unicode Character Database, Unicode License v3, and from Wikipedia, CC BY-SA 4.0, restated in this site's own words; aliases and notes marked as Unicode's are quoted from NamesList.txt, Copyright © 1991-2026 Unicode, Inc., https://www.unicode.org/license.txt)