Greek gematria calculator

Greek gematria, classically called isopsephy, assigns every letter of the Greek alphabet a fixed Milesian integer and treats a word as the sum of those values. Students of Koine and classical Greek, New Testament studies, and Hellenistic numerology look up a Greek gematria calculator when they need a reproducible total for a name, a lemma, or a classroom exercise. This tool accepts a Greek string, strips polytonic diacritics so accented spellings still score, maps each letter from alpha through omega onto the standard table—including final sigma—and returns the numeric total with a per-letter breakdown.

How Greek isopsephy assigns Milesian letter values

In the Milesian or Ionic system used for Greek gematria, each letter of the alphabet carries a single fixed value that never changes with context. Units run alpha one, beta two, gamma three, delta four, epsilon five, then zeta seven, eta eight, and theta nine. The missing six belongs to the archaic numeral letter stigma, also written as digamma in some fonts; this calculator still maps those glyphs when they appear, though ordinary literary words do not use them.

Tens run iota ten, kappa twenty, lambda thirty, mu forty, nu fifty, xi sixty, omicron seventy, and pi eighty, with archaic koppa filling ninety. Hundreds are rho one hundred, sigma two hundred, tau three hundred, upsilon four hundred, phi five hundred, chi six hundred, psi seven hundred, and omega eight hundred, with sampi filling nine hundred. Final sigma, the word-final form of sigma, uses the same two hundred as medial sigma, so a nominative such as logos still contributes two hundred on its last glyph.

Adding every letter produces the gematria of the string. A classroom example is logos: lambda thirty, omicron seventy, gamma three, omicron seventy, final sigma two hundred, totaling three hundred seventy-three. Another canonical total is the Greek spelling of Jesus, which sums to eight hundred eighty-eight after diacritics are stripped.

Because the mapping is a pure lookup table, two clients that send the same Greek letters always receive the same integer. That stability turns isopsephy from a paper chart into a contract you can pin in tests, gradebooks, and content pipelines without floating-point noise or locale-dependent collation.

What to type and what you get back

The string must contain at least one Greek letter in the Milesian inventory. Uppercase, lowercase, and polytonic spellings are accepted: the engine decomposes the string to canonical combining form, drops breathing marks, accents, and iota subscript, then looks up the base letter. That is how an acute on omicron or a rough breathing on iota still scores as omicron or iota rather than failing as an unknown glyph.

Final sigma is valued; stigma, koppa, and sampi are valued when present. Every remaining character must be a Greek letter. An empty string, a missing field, a non-string type, and a string longer than two hundred fifty-six characters also fail.

Those validation failures are not billed. Diagnostic strings method and system identify the algorithm as isopsephy under the milesian table, and formula restates the place values.