Ισοψηφισμός (Isopsephy)

Ισοψηφισμός (Isopsifismós, tr. isopsephy, from the Ancient Greek ἴσος, isos ["equal"] + ψῆφος, psephos ["pebble"]) is a system of converting Greek letters to defined numeric values, allowing one to perform mathematical operations on words, most commonly as basic addition to determine the total value of a given word or group of words (e.g., ισοψηφισμός = 10 + 200 + 70 + 700 + 8 + 500 + 10 + 200 + 40 + 70 + 200 = 2008).

Conversion Table

Letter	Name	Tr. (Latin)	Value
Α, α	Alpha	a	1
Β, β	Beta	b	2
Γ, γ	Gamma	g	3
Δ, δ	Delta	d	4
Ε, ε	Epsilon	e	5
Ϝ, ϝ, ϛ	Digamma (later Stigma)	w	6
Ζ, ζ	Zeta	z	7
Η, η	Eta	ē	8
Θ, θ	Theta	th	9
Ι, ι	Iota	i	10
K, κ	Kappa	k	20
Λ, λ	Lambda	l	30
Μ, μ	Mu	m	40
Ν, ν	Nu	n	50
Ξ, ξ	Xi	x	60
Ο, ο	Omicron	o	70
Π, π	Pi	p	80
Ϙ, ϙ	Koppa	q	90
Ρ, ρ	Rho	r	100
Σ, σ	Sigma	s	200
Τ, τ	Tau	t	300
Υ, υ	Upsilon	y	400
Φ, φ	Phi	ph	500
Χ, χ	Chi	ch	600
Ψ, ψ	Psi	ps	700
Ω, ω	Omega	ō	800
ϡ	Sampi	ts	900

Tool

https://hatch.kookscience.com/cipher/iso.php?cipher=el_1