Pi Symbol Π π — Copy, Paste and Type It

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

On Windows, press Win + . → Symbols → Greek, or in Microsoft Word type 03C0 and press Alt + X; the classic Alt code Alt + 227 types π. On a Mac, Option + P types π, or switch to the Greek keyboard and press P (Shift + P for the capital). Or simply copy it from the top of this page.

Q: What is the LaTeX command for pi?

Use \pi for lowercase π and \Pi for capital Π, inside math mode: $\pi$.

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

Lowercase π is U+03C0, written in HTML as π or π. Capital Π is U+03A0, written Π or Π.

Q: What is the Alt code for the pi symbol?

Hold Alt and type 227 on the numeric keypad (Num Lock on) to get π. On a Mac, press Option + P.

The pi symbol is the 16th letter of the Greek alphabet, written π in lowercase and Π in uppercase. It is pronounced /paɪ/ (“PIE”). Click a symbol to copy it.

Pi is one of the easiest Greek letters to type: Alt + 227 on Windows and Option + P on a Mac both produce the real letter π.

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Copy the pi symbol

Greek small letter pi U+03C0 · The lowercase letter

Greek capital letter Pi U+03A0 · The uppercase letter

N-ary product U+220F · The product operator ∏, the multiplication version of ∑. Option + Shift + P on a Mac.

Greek pi symbol (omega pi) U+03D6 · The variant ϖ, used as a separate variable in some physics texts.

Double-struck small pi U+213C · Blackboard-bold pi, rarely used in mathematics.

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

Π vs ∏ — the letter and the product sign

Capital pi Π (U+03A0) and the product operator ∏ (U+220F) look alike, but they are different characters. Use ∏ when you mean “multiply all of these”, as in ∏ x_i — it is taller, and in LaTeX it is \prod with proper limits above and below. Use Π for the letter itself, such as a variable or a fraternity name.

The same split exists for sigma: Σ is the letter, ∑ is the sum. See the sigma symbol page.

Copy π to 20 decimal places:

Not sure which Greek letter you need? See all 24 Greek symbols with codes.

Pi codes — Unicode, HTML, LaTeX and Alt codes

Char	Unicode	HTML entity	HTML decimal	HTML hex	CSS	JavaScript	LaTeX	Windows	Mac
π	`U+03C0`	`π`	`π`	`π`	`\03C0`	`\u03C0`	`\pi`	`Alt + 227`	`Option + P`
Π	`U+03A0`	`Π`	`Π`	`Π`	`\03A0`	`\u03A0`	`\Pi`	`03A0` then `Alt + X` (Word)	Greek keyboard `Shift + P`
∏	`U+220F`	`∏`	`∏`	`∏`	`\220F`	`\u220F`	`\prod`	`220F` then `Alt + X` (Word)	`Option + Shift + P`
ϖ	`U+03D6`	`ϖ`	`ϖ`	`ϖ`	`\03D6`	`\u03D6`	`\varpi`	`03D6` then `Alt + X` (Word)	Character Viewer
ℼ	`U+213C`	`—`	`ℼ`	`ℼ`	`\213C`	`\u213C`	`—`	`213C` then `Alt + X` (Word)	Character Viewer

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

How to type the pi symbol

Windows

Fastest: press Win + . to open the emoji panel, choose the Symbols tab (Ω), then Greek.
Alt code: hold Alt and type 227 for π on the numeric keypad with Num Lock on.
Microsoft Word: type 03C0 and press Alt + X for π; 03A0 then Alt + X for Π. Word converts it in place.

Mac

Add the Greek keyboard in System Settings → Keyboard → Input Sources, then P types π and Shift + P types Π.
Option + P on the standard keyboard types π (Greek small letter pi, U+03C0).
Option + Shift + P on the standard keyboard types ∏ (N-ary product, U+220F).
Or open the Character Viewer with Ctrl + Cmd + Space and search “pi”.

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

\pi — lowercase π in math mode
\Pi — capital Π
\prod — ∏ (n-ary product)
\varpi — ϖ (greek pi symbol (omega pi))

HTML, CSS and code

HTML: π or π or π
CSS: content: "\03C0";
JavaScript / JSON: "\u03C0" — Python: "\u03c0"
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 pi mean?

Mathematics

π ≈ 3.14159 26535 89793 — the ratio of a circle’s circumference to its diameter
∏ — the product of a sequence, like ∑ for sums
π(x) — the prime-counting function

Chemistry & physics

π bond — a covalent bond formed by sideways orbital overlap
π meson — the pion

Economics & statistics

π — profit, or the inflation rate
π — a population proportion

Culture

Pi Day — March 14 (3/14), when searches for the pi symbol more than double
Π on campus — Pi fraternities and sororities

Pi at a glance

Position: 16th of 24
Uppercase / lowercase: Π π
Greek name: πι
Pronunciation: /paɪ/
Numeric value: 80
Became: Latin P and Cyrillic П

Frequently asked questions

What is the pi symbol?

Pi (Π π) is the 16th letter of the Greek alphabet, pronounced /paɪ/ (“PIE”). It is most often used for the circle constant 3.14159…, the product sign.

How do I type the pi symbol on a keyboard?

On Windows, press Win + . → Symbols → Greek, or in Microsoft Word type 03C0 and press Alt + X; the classic Alt code Alt + 227 types π. On a Mac, Option + P types π, or switch to the Greek keyboard and press P (Shift + P for the capital). Or simply copy it from the top of this page.

What is the LaTeX command for pi?

Use \pi for lowercase π and \Pi for capital Π, inside math mode: $\pi$ .

What is the Unicode and HTML code for pi?

Lowercase π is U+03C0, written in HTML as π or π. Capital Π is U+03A0, written Π or Π.

What is the Alt code for the pi symbol?

Hold Alt and type 227 on the numeric keypad (Num Lock on) to get π. On a Mac, press Option + P.

What is the value of pi?

π ≈ 3.14159 26535 89793 23846… It is irrational, so its digits never end or repeat.

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