Greek Alphabet letters and numerals

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The Greek alphabet has been in use since around 800 BC. It was the first alphabet to have distinct letters for vowels as well as consonants. The Greek alphabet was derived from the Phoenecian alphabet and is the ancestor of the Latin and Cyrillic alphabets. Greek letters can also represent numbers through the greek numerals system (further down on this page).


Upper case letter Lower case letter Greek letter name English transliteration
Α α alpha a
Β β beta b
Γ γ gamma g
Δ δ delta d
Ε ε epsilon e
Ζ ζ zeta z
Η η eta ē
Θ θ theta th
Ι ι iota i
Κ κ kappa c, k
Λ λ lambda l
Μ μ mu m
Ν ν nu n
Ξ ξ xi x
Ο ο omicron o
Π π pi p
Ρ ρ rho r, rh
Σ σ/ς sigma s
Τ τ tau t
Υ υ upsilon y, u
Φ φ phi ph
Χ χ chi ch, kh
Ψ ψ psi ps
Ω ω omega ō

Greek numerals

Greek numerals are a system of representing numbers, which still is occasionally used for ordinal numbers in much the same way as Roman numerals. Greek numerals are also known as Milesian numerals, Alexandrian numerals or alphabetic numerals. To mark a letter as a numeral sign, a diacritical mark (ʹ) is added to it. A different diacritical mark is used for thousands (͵), so they become ͵Α = 1000, ͵Β = 2000, etc.

Greek numerals operates on the additive principle. For example 42 is written as 40 + 2 = μβʹ.

Upper case letter Greek letter name Number
Αʹ alpha 1
Βʹ beta 2
Γʹ gamma 3
Δʹ delta 4
Εʹ epsilon 5
ϛʹ digamma 6
Ζʹ zeta 7
Ηʹ eta 8
Θʹ theta 9
Ιʹ iota 10
Κʹ kappa 20
Λʹ lambda 30
Μʹ mu 40
Νʹ nu 50
Ξʹ xi 60
Οʹ omicron 70
Πʹ pi 80
ϟʹ koppa 90
Ρʹ rho 100
Σʹ sigma 200
Τʹ tau 300
Υʹ upsilon 400
Φʹ phi 500
Χʹ chi 600
Ψʹ psi 700
Ωʹ omega 800
ϡʹ sampi 900