What Is Greek Beta Code? A Guide to Greek Text Transliteration

What Beta Code is

Before Unicode keyboards were everywhere, classics scholars needed Greek in plain ASCII text files. Thesaurus Linguae Graecae and related projects adopted Beta Code: a standard where Latin letters stand in for Greek ones. A in Beta Code is alpha, B is beta, G is gamma — not English A and B with English values.

Beta Code is a transliteration convention, not a mystical extra cipher and not isopsephy itself. Isopsephy is the Milesian number system (alpha = 1, beta = 2, … omega = 800). Beta Code only answers: “How do I type this Greek word on a Latin keyboard?” Once the tool maps stand-ins back to Greek letters, Milesian values apply the same as if you had typed Unicode Greek.

Modern readers often encounter Beta Code in database exports, footnotes, and older academic PDFs. If you paste those strings into a Greek isopsephy tool, the calculator must know the convention — otherwise C might be read as Latin “C” with no Greek mapping, or confused with chi. This post is the fuller transliteration guide; the calculator page focuses on running totals, not teaching the whole standard.

Breathing marks and accents in scholarly Beta Code often use asterisks, parentheses, or similar markup. On this site, that markup is stripped before counting. Diacritics are not separate letters; only the base Greek character contributes to the sum.

Letter map (the ones this tool uses)

The core Latin-to-Greek map on this calculator: A=alpha, B=beta, G=gamma, D=delta, E=epsilon, Z=zeta, H=eta, Q=theta, I=iota, K=kappa, L=lambda, M=mu, N=nu, C=xi, O=omicron, P=pi, R=rho, S=sigma, T=tau, U=upsilon, F=phi, X=chi, Y=psi, W=omega. V is treated as digamma/stigma with Milesian value 6.

The C versus X trap is the most common keyboard error in Beta Code. C is xi (ξ), value 60. X is chi (χ), value 600. In English intuition, X might “look” like chi, but Beta Code assigns chi to X and xi to C. Typing chi as C undercounts by 540 for that single letter. Always verify the convention before trusting a total from a Latin string.

Worked string 1 — LOGOS in Beta Code: L=lambda (30), O=omicron (70), G=gamma (3), O=omicron (70), S=sigma (200). Sum: 373. That matches λόγος in Milesian isopsephy when the mapping is correct.

Worked string 2 — XRISTOS with chi as X: X=chi (600), R=rho (100), I=iota (10), S=sigma (200), T=tau (300), O=omicron (70), S=sigma (200). Sum: 1480. If you mistakenly used C for chi in the first position, you would start with 60 instead of 600 and destroy the total.

Worked string 3 — A short phrase with xi: LEXIS uses C for xi in the middle (L=30, E=5, C=60, I=10, S=200 → 295 for the Latin stand-ins). Compare to typing Greek λέξις directly in Unicode. The Greek table in the gematria letter chart lists Milesian values; this section teaches the typing layer above them.

On this calculator

Paste Unicode Greek and Milesian values apply directly. Type Latin Beta Code and each stand-in is mapped to its Greek letter first, then numbered. You can mix both in one session — each character is resolved before summing. The tool does not apply English Ordinal to Beta Code letters; that would be a different cipher entirely. Course practice covers Greek isopsephy and Beta Code.

Sigma has two written forms (σ and ς) in Greek, but the Milesian value for sigma is one value (200). The calculator normalizes case and common variant glyphs where needed. What it will not do is guess English spellings of Greek words — THESUS is not a Beta Code substitute for a properly coded string.

For the broader frame of letter-number traditions (Greek vs Hebrew vs English), the What Is Gematria? guide defines terms without turning this page into a second product homepage. For reverse lookup after you have a total, see how decoding works — mechanics live there, not here.

Practical workflow: copy the Beta Code line from your source, paste into the Greek calculator, read the breakdown letter by letter, fix any C/X swap if the total looks wrong, then compare with the Unicode paste if you have it. Agreement between both inputs is a good sanity check that the transliteration layer read your string correctly.