Greek Letters — Copy and Paste (α β γ δ π Σ Ω)

Greek letters.

The full Greek alphabet, lowercase and uppercase — tap any letter to copy it.

Tap any symbol to copy it.

Lowercase

Uppercase

Where Greek letters show up

Greek letters are everywhere in maths, science and engineering: π for pi, Σ for a sum, Δ for change, λ for wavelength, μ for micro, Ω for ohms, θ for an angle. They also appear in statistics (σ, β), finance (alpha and beta, often written out), and as names for everything from fraternities to software releases. Each one here is a real Unicode character, so it copies cleanly into documents, equations and slides. If you need the matching mathematical operators (∑, √, ∞) to go with them, the math symbols page has those.

The lookalike traps

Several Greek letters have near-identical twins elsewhere in Unicode, and picking the wrong one causes problems that are invisible until something breaks — a search that finds nothing, a sort that misorders, a database lookup that misses.

μ vs µ. Greek small mu is U+03BC; the micro sign is U+00B5. They render the same but are different characters. Use the micro sign in units (µm, µs) and Greek mu in mathematics.
Ω vs Ω. Greek capital omega is U+03A9; the ohm sign is U+2126. Unicode now recommends the Greek letter for both, and normalisation converts the ohm sign to it.
Α Β Ε Ζ Η Ι Κ Μ Ν Ο Ρ Τ Υ Χ are Greek capitals that look exactly like Latin A B E Z H I K M N O P T Y X but are distinct characters.

If two strings look identical but refuse to match, this is almost always the reason.

Final sigma

Greek is unusual in giving one letter two lowercase forms. σ (U+03C3) is used everywhere except at the end of a word, where ς (U+03C2), "final sigma", takes over. The capital is Σ (U+03A3) in both cases.

This matters if you are setting actual Greek text rather than mathematical notation. In maths, σ is conventional throughout — for standard deviation, for a stress tensor, for the Stefan–Boltzmann constant — and final sigma does not appear. Σ, meanwhile, is the summation operator, which is a mathematical use of the capital rather than a letter in a word.

Typing them

HTML entities are named after the letters: π π, σ σ, Σ Σ, Δ Δ, λ λ, θ θ, Ω Ω. Capitalising the entity name gives the capital letter.
Microsoft Word converts a code point to its character with Alt + X, so typing 3c0 then Alt + X produces π.
LaTeX uses backslash names — \pi, \Sigma, \Delta — and many editors and note apps now accept the same shorthand.
Linux: Ctrl + Shift + U, then the hex code and Enter.

For the operators that usually accompany these letters, the math symbols page has ∑, √, ∫ and the rest.

FAQ

How do I type a specific Greek letter like pi or sigma?

The quickest way is to copy it above. In some tools you can also type the name and a shortcut — for example, in LaTeX \pi and \sigma produce the symbols, and Microsoft Word converts \pi then space via its equation tools.

What's the difference between lowercase σ and uppercase Σ?

They're different characters with different meanings by convention — lowercase σ often denotes standard deviation or a single value, while uppercase Σ denotes summation. Copy whichever your context needs.

Why do two identical-looking Greek letters not match in search?

Because they are different characters. Greek small mu is U+03BC while the micro sign is U+00B5, and Greek capitals like Α Β Ε Ο Ρ Τ have Latin lookalikes at different code points. Two strings can look the same and still fail to match.

When do I use ς instead of σ?

Final sigma ς is used only at the end of a word in Greek text; σ is used everywhere else. Both share the capital Σ. In mathematical notation σ is used throughout and final sigma does not appear.

How do I type a Greek letter in Word?

Type the hex code point and press Alt + X — 3c0 becomes π, 3a3 becomes Σ. In HTML use the named entities such as π and Σ, where capitalising the name gives the capital letter.