“Beta Code” is a system for representing polytonic Ancient Greek text—with accents, breathings, &c.—using Latin characters. It was developed in the 1970s to use the computers of the day with Ancient Greek. This utility, and the code behind it, transliterates Beta Code to modern Unicode.

Beta Code Guide

α	β	γ	δ	ε	ζ	η	θ	ι	κ	λ	μ	ν	ξ	ο	π	ρ	σ	ς	τ	υ	φ	χ	ψ	ω	ἀ	ἁ	ά	ὰ	ᾶ	ᾳ	ᾄ	ϊ	Α	Β	Γ	Ἀ	Ἄ	.	;	:	’
`a`	`b`	`g`	`d`	`e`	`z`	`h`	`q`	`i`	`k`	`l`	`m`	`n`	`c`	`o`	`p`	`r`	`s`	`s`	`t`	`u`	`f`	`x`	`y`	`w`	`a)`	`a(`	`a/`	`a\`	`a=`	`a\|`	`a)/\|`	`i+`	`*a`	`*b`	`*g`	`*a)`	`*a)/`	`.`	`;`	`:`	`'`

Type Greek in BetaCode

Click to copy:

❌ means that the program could not interpret a character of combination of characters as valid BetaCode.

Download a PDF of the full character coverage here.

The betatyper.js code is passing a number of tests which you can see here. It does not cover the full BetaCode specification.

You can open a console in your browser and type let br = new betareader(); br.transcodeGreek("mh=nin"); to play with transcoding. N.b. For consistency with the Julia library, you can also use br.betaToUnicode() to the same effect.