Upsilon Symbol Υ υ — Copy, Paste and Type It

Q: How do I type the upsilon symbol on a keyboard?

On Windows, press Win + . → Symbols → Greek, or in Microsoft Word type 03C5 and press Alt + X. On a Mac, switch to the Greek keyboard and press Y (Shift + Y for the capital). Or simply copy it from the top of this page.

Q: What is the LaTeX command for upsilon?

Use \upsilon for lowercase υ and \Upsilon for capital Υ, inside math mode: $\upsilon$.

Q: What is the Unicode and HTML code for upsilon?

Lowercase υ is U+03C5, written in HTML as υ or υ. Capital Υ is U+03A5, written Υ or Υ.

The upsilon symbol is the 20th letter of the Greek alphabet, written υ in lowercase and Υ in uppercase. It is pronounced /ˈʌpsɪlɒn/ (“UP-sih-lon”). Click a symbol to copy it.

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Copy the upsilon symbol

Greek small letter upsilon U+03C5 · The lowercase letter

Greek capital letter Upsilon U+03A5 · The uppercase letter

Greek upsilon with hook symbol U+03D2 · The ϒ form, used for the Upsilon meson in physics.

Upsilon codes — Unicode, HTML, LaTeX and Alt codes

Char	Unicode	HTML entity	HTML decimal	HTML hex	CSS	JavaScript	LaTeX	Windows	Mac
υ	`U+03C5`	`υ`	`υ`	`υ`	`\03C5`	`\u03C5`	`\upsilon`	`03C5` then `Alt + X` (Word)	Greek keyboard `Y`
Υ	`U+03A5`	`Υ`	`Υ`	`Υ`	`\03A5`	`\u03A5`	`\Upsilon`	`03A5` then `Alt + X` (Word)	Greek keyboard `Shift + Y`
ϒ	`U+03D2`	`&upsih;`	`ϒ`	`ϒ`	`\03D2`	`\u03D2`	`—`	`03D2` then `Alt + X` (Word)	Character Viewer

Need the characters without any explanation? Open the Greek letters copy-paste sheet.

How to type the upsilon symbol

Windows

Fastest: press Win + . to open the emoji panel, choose the Symbols tab (Ω), then Greek.
There is no classic Alt code for upsilon — the old DOS code page only included a handful of Greek letters (α Γ π Σ σ τ Φ Θ Ω δ φ ε). Use one of the other methods.
Microsoft Word: type 03C5 and press Alt + X for υ; 03A5 then Alt + X for Υ. Word converts it in place.

Mac

Add the Greek keyboard in System Settings → Keyboard → Input Sources, then Y types υ and Shift + Y types Υ.
Or open the Character Viewer with Ctrl + Cmd + Space and search “upsilon”.

iPhone and Android

iOS: Settings → General → Keyboard → Keyboards → Add New Keyboard → Greek. Tap the globe key to switch.
Android (Gboard): Settings → Languages → Add keyboard → Greek.
Or copy the character from the top of this page.

LaTeX

\upsilon — lowercase υ in math mode
\Upsilon — capital Υ

HTML, CSS and code

HTML: υ or υ or υ
CSS: content: "\03C5";
JavaScript / JSON: "\u03C5" — Python: "\u03c5"
In source code, prefer the escape over the pasted glyph — it survives every file encoding.

Full typing guide for every platform, including Linux and Google Docs → how to type Greek letters.

What does upsilon mean?

Physics

ϒ — the Upsilon meson, a bound state of a bottom quark and antiquark
Υ — the mass-to-light ratio in astronomy

Language

upsilon is the ancestor of four Latin letters: U, V, W and Y

Upsilon at a glance

Position: 20th of 24
Uppercase / lowercase: Υ υ
Greek name: ύψιλον
Pronunciation: /ˈʌpsɪlɒn/
Numeric value: 400
Became: Latin U, V, W and Y, and Cyrillic У

Frequently asked questions

What is the upsilon symbol?

Upsilon (Υ υ) is the 20th letter of the Greek alphabet, pronounced /ˈʌpsɪlɒn/ (“UP-sih-lon”). It is most often used for the Upsilon meson; ancestor of U, V, W and Y.

How do I type the upsilon symbol on a keyboard?

On Windows, press Win + . → Symbols → Greek, or in Microsoft Word type 03C5 and press Alt + X. On a Mac, switch to the Greek keyboard and press Y (Shift + Y for the capital). Or simply copy it from the top of this page.

What is the LaTeX command for upsilon?

Use \upsilon for lowercase υ and \Upsilon for capital Υ, inside math mode: $\upsilon$ .

What is the Unicode and HTML code for upsilon?

Lowercase υ is U+03C5, written in HTML as υ or υ. Capital Υ is U+03A5, written Υ or Υ.

← See all 24 Greek symbols