Number to Greek numerals converter

Each Greek letter carries a number value in this system, still used in Greece for chapters, events and royal names.

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How to use it

  1. Enter number and letter case.
  2. The result appears straight away and updates as you edit.
  3. Copy the result, or copy a link that keeps the same values to share it.

How it is calculated

Units α=1 to θ=9 (ϛ=6), tens ι=10 to ϟ=90, hundreds ρ=100 to ϡ=900, and thousands reuse the unit letters after the sign ͵ (͵β = 2000). Letters go from largest to smallest and end with the keraia ʹ.

Example

Inputs: Number = 666, Letter case = Lowercase (χξϛ). Result: In Greek numerals: χξϛʹ.

Limits and caveats

  • Six uses stigma ϛ, which modern Greek typesetting sometimes writes as στ.
  • The limit is 9999; larger numbers used extra marks that vary between sources.

Questions about this tool

How is 666 written in Greek numerals?

It is χξϛ: χ = 600, ξ = 60 and ϛ = 6.

What is the ʹ mark at the end?

It is the keraia, which tells a numeral apart from an ordinary word spelled with the same letters.

Which letters are missing from the modern alphabet?

Three: stigma ϛ for 6, koppa ϟ for 90 and sampi ϡ for 900.