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From Wikipedia, the free encyclopedia

Beta Code is a method of representing, using only ASCII characters, characters and formatting found in ancient Greek texts (and other ancient languages). Its aim is to be not merely a romanization of the Greek alphabet, but to represent faithfully a wide variety of source texts – including formatting as well as rare or idiosyncratic characters.

Beta Code was developed by David W. Packard in the late 1970s and adopted by Thesaurus Linguae Graecae in 1981. It has become the standard for encoding polytonic Greek and has also been used by a number of other projects such as the Perseus Project (which encodes all its Ancient Greek texts using Beta code)[1], the Packard Humanities Institute, the Duke collection of Documentary Papyri, and the Greek Epigraphy Project at Cornell and Ohio State University. Beta Code can be easily converted to a variety of systems for display, most notably Unicode.[2] Systems such as Sophokeys for typing Beta Code but producing Greek glyphs directly in the entered text (rather than when it is typeset or otherwise output) are increasingly popular, with the result that Beta Code, with some variations, has become a sort of universal default keymap for text entry in polytonic Greek.[citation needed]


Greek alphabet

Standard Greek alphabet with Beta Code equivalents
Upper case Beta Code Character name Lower case Beta Code
Α *A Alpha α A
Β *B Beta β B
Γ *G Gamma γ G
Δ *D Delta δ D
Ε *E Epsilon ε E
Ϝ *V Digamma ϝ V
Ζ *Z Zeta ζ Z
Η *H Eta η H
Θ *Q Theta θ Q
Ι *I Iota ι I
Κ *K Kappa κ K
Λ *L Lambda λ L
Μ *M Mu μ M
Ν *N Nu ν N
Ξ *C Xi ξ C
Ο *O Omicron ο O
Π *P Pi π P
Ρ *R Rho ρ R
Σ *S Medial Sigma σ S, S1
Final Sigma ς S, S2, J
Ϲ *S3 Lunate Sigma ϲ S3
Τ *T Tau τ T
Υ *U Upsilon υ U
Φ *F Phi φ F
Χ *X Chi χ X
Ψ *Y Psi ψ Y
Ω *W Omega ω W


  • Instead of big Latin letters also small Latin letters can be used (e.g. a for α and *a for Α).
  • The TLG Beta Code Manual uses upper-case ASCII letters to represent Greek letters. A variant (used by the Perseus Project) uses lower-case ASCII letters instead. In both cases, the unadorned ASCII letter represents a lower-case Greek letter, and an asterisk must be added to indicate an upper-case Greek letter.
  • In general, one encoding character S for Greek sigma is sufficient; it is interpreted as a final sigma at the end of words or when followed by punctuation, and as a medial sigma in other positions. In cases where this auto-disambiguation is not correct, the specific codes S1 and S2 are available.
  • Some representations use J for the final sigma and S for the medial sigma.


Punctuation Beta Code Name
. . Period
, , Comma
· : Colon (Ano Stigme)
; ; Question Mark
' Apostrophe
- Hyphen
_ Dash
ʹ # Numeral (Keraia)

Accents and diacritics

Polytonic Greek accents and diacritics
Diacritic Beta Code Name Examples Coded as
  ̓ ) Smooth breathing ἐν E)N
  ̔ ( Rough breathing ὁ, οἱ O(, OI(
 ́ / Acute accent πρός PRO/S
  ͂ = Circumflex accent τῶν TW=N
 ̀ \ Grave accent πρὸς PRO\S
  ̈ + Diaeresis προϊέναι PROI+E/NAI
  ͅ | Iota subscript τῷ TW=|
  ̄ & macron μαχαίρᾱς MAXAI/RA&S
  ̆ ' Breve μάχαιρᾰ MA/XAIRA'


  1. ^ Greek Font Display on the Perseus Project website
  2. ^ A Beta to Unicode reference guide has been developed by the TLG project (

External links

This page was last edited on 27 April 2020, at 16:11
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