Eta Symbol Η η — Copy, Paste and Type It

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

On Windows, press Win + . → Symbols → Greek, or in Microsoft Word type 03B7 and press Alt + X. On a Mac, switch to the Greek keyboard and press H (Shift + H for the capital). Or simply copy it from the top of this page.

Q: What is the LaTeX command for eta?

Use \eta for lowercase η, inside math mode. There is no \Eta command for the capital: it looks identical to the Latin H, so you type H.

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

Lowercase η is U+03B7, written in HTML as η or η. Capital Η is U+0397, written Η or Η.

The eta symbol is the 7th letter of the Greek alphabet, written η in lowercase and Η in uppercase. It is pronounced /ˈiːtə/ (“AY-tuh or EE-tuh”). Click a symbol to copy it.

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Copy the eta symbol

Greek small letter eta U+03B7 · The lowercase letter

Greek capital letter Eta U+0397 · The uppercase letter

Latin small letter eng U+014B · The ŋ sound in “sing”. Looks like η but is a Latin/IPA letter.

Dashed boxes are look-alikes that are not the Greek letter — listed so you can tell them apart.

Eta codes — Unicode, HTML, LaTeX and Alt codes

Char	Unicode	HTML entity	HTML decimal	HTML hex	CSS	JavaScript	LaTeX	Windows	Mac
η	`U+03B7`	`η`	`η`	`η`	`\03B7`	`\u03B7`	`\eta`	`03B7` then `Alt + X` (Word)	Greek keyboard `H`
Η	`U+0397`	`Η`	`Η`	`Η`	`\0397`	`\u0397`	`H (no \Eta command)`	`0397` then `Alt + X` (Word)	Greek keyboard `Shift + H`
ŋ	`U+014B`	`—`	`ŋ`	`ŋ`	`\014B`	`\u014B`	`—`	`014B` then `Alt + X` (Word)	Character Viewer

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

How to type the eta symbol

Windows

Fastest: press Win + . to open the emoji panel, choose the Symbols tab (Ω), then Greek.
There is no classic Alt code for eta — 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 03B7 and press Alt + X for η; 0397 then Alt + X for Η. Word converts it in place.

Mac

Add the Greek keyboard in System Settings → Keyboard → Input Sources, then H types η and Shift + H types Η.
Or open the Character Viewer with Ctrl + Cmd + Space and search “eta”.

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

\eta — lowercase η in math mode
H or \mathrm{H} — capital Η (there is no \Eta)

HTML, CSS and code

HTML: η or η or η
CSS: content: "\03B7";
JavaScript / JSON: "\u03B7" — Python: "\u03b7"
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 eta mean?

Engineering & physics

η — efficiency, output over input
η — dynamic viscosity, in Pa·s

Statistics

η² — eta-squared, an effect size in ANOVA

Mathematics

η(τ) — the Dedekind eta function; η(s) — the Dirichlet eta function

Particle physics & astronomy

the η meson
η Carinae — a famous unstable star

Eta at a glance

Position: 7th of 24
Uppercase / lowercase: Η η
Greek name: ήτα
Pronunciation: /ˈiːtə/
Numeric value: 8
Became: Latin H and Cyrillic И

Frequently asked questions

What is the eta symbol?

Eta (Η η) is the 7th letter of the Greek alphabet, pronounced /ˈiːtə/ (“AY-tuh or EE-tuh”). It is most often used for efficiency, viscosity, eta-squared.

How do I type the eta symbol on a keyboard?

On Windows, press Win + . → Symbols → Greek, or in Microsoft Word type 03B7 and press Alt + X. On a Mac, switch to the Greek keyboard and press H (Shift + H for the capital). Or simply copy it from the top of this page.

What is the LaTeX command for eta?

Use \eta for lowercase η, inside math mode. There is no \Eta command for the capital: it looks identical to the Latin H, so you type H.

What is the Unicode and HTML code for eta?

Lowercase η is U+03B7, written in HTML as η or η. Capital Η is U+0397, written Η or Η.

← See all 24 Greek symbols