Psi Symbol Copy and Paste

Copy ψ, the Greek letter psi, or take the capital Ψ, a math style or the string ψ(x).

ψGreek small letter psiU+03C8Ready to copy

24 psi characters and strings. Tap any value to copy it.

24 psi characters and strings. A character and its name both copy the character. A code copies the code.
Character	Name	Code point	HTML	LaTeX
	U+03C8. Twenty-third and next to last in the Greek alphabet. It writes ps, as in lapse, and is the usual symbol of a wave function. No Alt code types it; HTML has ψ and LaTeX \psi.
	U+03A8. Capital psi, a stem with three prongs. It also names a wave function, and stands as a sign for psychology. HTML has Ψ and LaTeX \Psi; no Alt code types it.
	U+1D713. Italic psi in lowercase, one of the math alphabet letters. Ordinary Greek words are spelled with U+03C8.
	U+1D6F9. Capital psi, italic. Unicode treats it as U+03A8 with the type style built in.
	Made of U+03C8, U+0028, U+0078 and U+0029. Psi, then x in parentheses: a wave function of position, as quantum mechanics writes it.
	Made of U+007C, U+03C8 and U+27E9. A vertical line, psi and a right angle bracket: a ket, the way bra-ket notation writes a quantum state.
	Made of U+004A, U+002F and U+03C8. The J/psi meson, a particle made of a charm quark and its antiquark.
	U+1F531. The trident emblem, an emoji added in Unicode 6.0 (2010). A trident is a three-pronged spear, the shape capital psi brings to mind. It is not a letter.
	U+22D4. Pitchfork, a math sign that Unicode also calls proper intersection. &fork; in HTML; \pitchfork in LaTeX needs the amssymb package. It is not psi.
	U+1D2A. A capital psi shrunk to lowercase height. It sits in the Phonetic Extensions block.
	U+1D6D9. Bold psi in lowercase, one of the math alphabet letters. Ordinary Greek words are spelled with U+03C8.
	U+1D74D. Bold italic psi in lowercase, one of the math alphabet letters. Ordinary Greek words are spelled with U+03C8.
	U+1D787. Sans-serif bold psi in lowercase, one of the math alphabet letters. Ordinary Greek words are spelled with U+03C8.
	U+1D7C1. Sans-serif bold italic psi in lowercase, one of the math alphabet letters. Ordinary Greek words are spelled with U+03C8.
	U+1D6BF. Capital psi, bold. Unicode treats it as U+03A8 with the type style built in.
	U+1D733. Capital psi, bold italic. Unicode treats it as U+03A8 with the type style built in.
	U+1D76D. Capital psi, sans-serif bold. Unicode treats it as U+03A8 with the type style built in.
	U+1D7A7. Capital psi, sans-serif bold italic. Unicode treats it as U+03A8 with the type style built in.
	Made of U+03C8 and U+03B9. Two letters, psi then iota: the Greek spelling of this letter's own name, said psee.
	Made of U+03C8 and U+0374. Psi marked as a number: followed by the keraia stroke it means 700.
	U+0470. Psi of the early Cyrillic alphabet, taken from the Greek letter. Russian spelling dropped it in 1708; Church Slavonic still uses it.
	U+0471. Small Cyrillic psi, which writes ps as the Greek letter does.
	U+2CAE. Psi of the Coptic alphabet, which took the letter over from Greek and kept its name.
	U+2CAF. Coptic psi, small.

Next step Ω and ω, the letter after psi

How it works

ψ is the psi symbol: Greek small letter psi, U+03C8, the twenty-third letter of the Greek alphabet. The rows add the capital Ψ, math styles such as 𝜓, the strings ψ(x) and J/ψ, and the look-alikes 🔱 and ⋔.

Read the full guide

Ψ, the trident Greek letter

Capital psi is a stem with three prongs, the outline of a trident, the three-pronged spear. 🔱, U+1F531, is the trident emblem, an emoji. ⋔, U+22D4, is the pitchfork, a math sign. Neither one is a letter, and Greek words take Ψ and ψ only.

One letter for ps

Psi writes the two sounds ps with one letter, as in the English word lapse. Words taken from Greek spell it ps.

As a Greek numeral psi is 700, written ψʹ.
Ѱ and ѱ are the Cyrillic psi. Russian spelling dropped the letter in 1708, and Church Slavonic still uses it.

Questions and answers

How do I type the psi symbol?

No Alt code types psi, so copying is the short way. In HTML ψ is the small letter and Ψ the capital, ψ and Ψ as numbers. In LaTeX \psi and \Psi print them in math mode.

What is the Greek letter that looks like a trident?

Psi. The capital, Ψ, has three prongs on a stem. The trident emoji 🔱 is a separate character and not a letter.

What does the psi letter stand for?

ψ and Ψ are the commonest symbols of a wave function in quantum mechanics. The letter also stands for the field of psychology and names the J/psi meson. In Greek words it writes the sound ps.

How do you say psi?

English says sy, to rhyme with sky, or see, and some speakers sound the p first. Greek says psee. The letter said zy or ksy is a different one, xi, Ξ.

All 24 psi characters and strings

Start here 10

Greek capital letter psi U+03A8. Capital psi, a stem with three prongs. It also names a wave function, and stands as a sign for psychology. HTML has Ψ and LaTeX \Psi; no Alt code types it.
Greek letter small capital psi U+1D2A. A capital psi shrunk to lowercase height. It sits in the Phonetic Extensions block.
Greek small letter psi U+03C8. Twenty-third and next to last in the Greek alphabet. It writes ps, as in lapse, and is the usual symbol of a wave function. No Alt code types it; HTML has ψ and LaTeX \psi.
J/psi Made of U+004A, U+002F and U+03C8. The J/psi meson, a particle made of a charm quark and its antiquark.
Ket psi Made of U+007C, U+03C8 and U+27E9. A vertical line, psi and a right angle bracket: a ket, the way bra-ket notation writes a quantum state.
Mathematical italic capital psi U+1D6F9. Capital psi, italic. Unicode treats it as U+03A8 with the type style built in.
Mathematical italic small psi U+1D713. Italic psi in lowercase, one of the math alphabet letters. Ordinary Greek words are spelled with U+03C8.
Pitchfork U+22D4. Pitchfork, a math sign that Unicode also calls proper intersection. &fork; in HTML; \pitchfork in LaTeX needs the amssymb package. It is not psi.
Psi of x Made of U+03C8, U+0028, U+0078 and U+0029. Psi, then x in parentheses: a wave function of position, as quantum mechanics writes it.
Trident emblem U+1F531. The trident emblem, an emoji added in Unicode 6.0 (2010). A trident is a three-pronged spear, the shape capital psi brings to mind. It is not a letter.

Show all 24 psi characters and strings (14 more)

Small psi ψ 4

Mathematical bold italic small psi U+1D74D. Bold italic psi in lowercase, one of the math alphabet letters. Ordinary Greek words are spelled with U+03C8.
Mathematical bold small psi U+1D6D9. Bold psi in lowercase, one of the math alphabet letters. Ordinary Greek words are spelled with U+03C8.
Mathematical sans-serif bold italic small psi U+1D7C1. Sans-serif bold italic psi in lowercase, one of the math alphabet letters. Ordinary Greek words are spelled with U+03C8.
Mathematical sans-serif bold small psi U+1D787. Sans-serif bold psi in lowercase, one of the math alphabet letters. Ordinary Greek words are spelled with U+03C8.

Capital psi Ψ 4

Mathematical bold capital psi U+1D6BF. Capital psi, bold. Unicode treats it as U+03A8 with the type style built in.
Mathematical bold italic capital psi U+1D733. Capital psi, bold italic. Unicode treats it as U+03A8 with the type style built in.
Mathematical sans-serif bold capital psi U+1D76D. Capital psi, sans-serif bold. Unicode treats it as U+03A8 with the type style built in.
Mathematical sans-serif bold italic capital psi U+1D7A7. Capital psi, sans-serif bold italic. Unicode treats it as U+03A8 with the type style built in.

Psi in formulas and spelling 2

Psi as a numeral Made of U+03C8 and U+0374. Psi marked as a number: followed by the keraia stroke it means 700.
Psi in Greek Made of U+03C8 and U+03B9. Two letters, psi then iota: the Greek spelling of this letter's own name, said psee.

Psi in other alphabets 4

Coptic capital letter psi U+2CAE. Psi of the Coptic alphabet, which took the letter over from Greek and kept its name.
Coptic small letter psi U+2CAF. Coptic psi, small.
Cyrillic capital letter psi U+0470. Psi of the early Cyrillic alphabet, taken from the Greek letter. Russian spelling dropped it in 1708; Church Slavonic still uses it.
Cyrillic small letter psi U+0471. Small Cyrillic psi, which writes ps as the Greek letter does.

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 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). The one macro from a package is \pitchfork, which the amssymb package declares (https://mirrors.ctan.org/fonts/amsfonts/source/amssymb.dtx); its row says so. A cell is empty where no such method exists. What psi is for, as https://en.wikipedia.org/wiki/Psi_(Greek) records it: the twenty-third and next to last letter, the sound ps as in lapse, the numeral value 700, the ways English says the name and the Greek one, the name in Greek, the wave function, psychology and the J/psi meson among its uses, the Cyrillic psi, and the rule that styled Greek text keeps the plain letters. Psi as the usual symbol of a wave function, and the form with x in parentheses: https://en.wikipedia.org/wiki/Wave_function. The ket: https://en.wikipedia.org/wiki/Bra–ket_notation. The J/psi meson and its quarks: https://en.wikipedia.org/wiki/J/psi_meson. The Cyrillic psi, the year 1708 and Church Slavonic: https://en.wikipedia.org/wiki/Psi_(Cyrillic). A trident as a three-pronged spear: https://en.wikipedia.org/wiki/Trident. The sound of psi as the ps of lapse, the numeral stroke, and Coptic as a descendant of the Greek alphabet: https://en.wikipedia.org/wiki/Greek_alphabet. Listed: the two letters, the ten math alphabet forms, the small capital, the Cyrillic and Coptic letters, two signs it is mistaken for, and this site's own strings of two to four characters, each written the way a source writes it. Left out: the other Greek letters, the syllables of other scripts that only share the name, and the uses of the letter as the mark of a school or a club. The Start here group, the made rows and the order are this site's own choice. All sources were read on 2 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)