All 24 Greek Letters

The Greek alphabet has 24 letters, from Alpha (Α) to Omega (Ω). Each letter below links to a full guide covering its meaning, pronunciation, history, uses in math and science, and how to type or copy it.

#	Letter	Uppercase	Lowercase	Sound	Numeric value
1	Alpha	Α	α	a (father)	1
2	Beta	Β	β	b	2
3	Gamma	Γ	γ	g (go)	3
4	Delta	Δ	δ	d	4
5	Epsilon	Ε	ε	e (met)	5
6	Zeta	Ζ	ζ	z	7
7	Eta	Η	η	ē (they)	8
8	Theta	Θ	θ	th (think)	9
9	Iota	Ι	ι	i (machine)	10
10	Kappa	Κ	κ	k	20
11	Lambda	Λ	λ	l	30
12	Mu	Μ	μ	m	40
13	Nu	Ν	ν	n	50
14	Xi	Ξ	ξ	x (box)	60
15	Omicron	Ο	ο	o (not)	70
16	Pi	Π	π	p	80
17	Rho	Ρ	ρ	r	100
18	Sigma	Σ	σ/ς	s	200
19	Tau	Τ	τ	t	300
20	Upsilon	Υ	υ	u/y	400
21	Phi	Φ	φ	f/ph	500
22	Chi	Χ	χ	ch (loch)	600
23	Psi	Ψ	ψ	ps	700
24	Omega	Ω	ω	ō (tone)	800

Explore the Greek Alphabet

Greek Alphabet in Order — the full A-to-Z sequence with memory tips
Interactive Chart — all letters at a glance with details
Copy & Paste Greek Letters — one-click copy for every symbol
Pronunciation Guide — ancient and modern pronunciation of each letter
How to Type Greek Letters — Windows, Mac, Linux, and mobile
Greek Symbols & Meanings — what each letter stands for in math and science