Gematria Decoder

What a decoder does

A gematria decoder is a calculator that refuses to choose. Instead of one cipher, it runs your text through every table at once, so that any value that recurs — across ciphers, or between two phrases — is visible immediately.

The term comes from the online community that grew up around Gematrix and Gematrinator, and around Zachary Hubbard’s Letters & Numbers, where “decoding” means checking names, headlines and dates against a stack of ciphers for shared values^{[1] Source: Letters & Numbers[2] Source: Gematrinator calculator}. This page gives you the same stack, with two differences: each cipher’s origin is documented, and the arithmetic is always visible so that nothing is a black box.

The 14 ciphers

Ciphers are grouped by alphabet. Whichever group matches what you type moves to the top of the table.

English (Latin alphabet)

• English Ordinal — A=1 … Z=26.
• Full Reduction — Pythagorean: each letter reduced to a single digit 1–9.
• Reverse Ordinal — Z=1 … A=26.
• Reverse Full Reduction — Reverse Ordinal reduced to a single digit.
• Sumerian (English Ordinal ×6) — Ordinal × 6. Called "English Gematria" on Gematrix.
• Jewish (Agrippa Latin) — Agrippa’s 1533 Latin key applied to English letters; the "Jewish Gematria" of Gematrix/Gematrinator.
• Chaldean — Sound-based 1–8 system; 9 is never assigned.
• Septenary — Values rise 1–7 and fall back, twice across the alphabet.
• Francis Bacon — a–z = 1–26, capitals A–Z = 27–52 (case matters).

Hebrew

• Hebrew Standard (Mispar Hechrachi) — The standard absolute value; finals count as their base letter.
• Mispar Gadol (final letters 500–900) — Finals ך‎ 500, ם‎ 600, ן‎ 700, ף‎ 800, ץ‎ 900.
• Mispar Siduri (ordinal) — Alef=1 … Tav=22.
• Mispar Katan (reduced) — Each letter reduced to 1–9.

Greek

• Greek Isopsephy — Classical Greek numerals incl. stigma, koppa and sampi.

Gematrinator lists roughly three dozen ciphers; most of the additional ones are arithmetic derivatives (a table’s reverse, or its reduction, or a “KV exception” variant)^{[2] Source: Gematrinator calculator}. The 14 here are the ones whose tables can be traced to a named source; the methodology page gives that source for each, and new ciphers are added only on the same standard.

Francis Bacon: case matters

One cipher in the decoder behaves differently from all the others. In Francis Bacon, lower-case letters are 1–26 and capitals are 27–52, so how you type changes the answer: decode = 36 · Decode = 62 · DECODE = 192. Every other cipher ignores case.

The name is borrowed. Bacon’s own published cipher (1623) is a biliteral code that hides a message in two typefaces — a steganographic device, not a letter-value table^{[3] Source: Bacon’s cipher}. The “simple cipher” used by Baconian theorists of Shakespeare authorship is a 24-letter table without case. The 52-value version here is the modern decoding community’s convention, taken from Gematrinator^{[2] Source: Gematrinator calculator}. It is included because people search for it and compare against it, and labelled so that no one mistakes it for something Bacon wrote.

Reading the results honestly

Fourteen numbers for one phrase is a lot of chances for something to look meaningful. Three facts keep a decode grounded.

1. Many ciphers are not independent. Sumerian is always 6 × Ordinal. Reverse Ordinal equals 27 × (letter count) − Ordinal. Reductions are functions of the tables they reduce. A phrase that “matches in Ordinal, Sumerian and Reverse” has matched once, not three times.
2. Totals are crowded. With 26 letters and ordinary word lengths, most English Ordinal totals between about 40 and 130 are shared by hundreds of common words. In Full Reduction the range is narrower still. A match at those values is expected, not remarkable.
3. Spelling is a choice. “Jesus”, “Iesus” and “Yeshua” give unrelated values; Hebrew with and without a final letter differs by hundreds in Mispar Gadol. A decode that depends on picking the spelling that fits has shown only that a fitting spelling exists.

None of this makes the decoder useless; it makes it a tool for finding candidates rather than confirming them. The accuracy page gives the numbers behind these points.

A decoding workflow

1. Type the phrase. Check the Detected line shows the alphabet you meant — a stray Latin letter in Hebrew text will light up the English ciphers too.
2. Note the four headline tiles (they follow the alphabet: English base ciphers, or the four Hebrew methods, or isopsephy).
3. Select a row to see the letter-by-letter arithmetic and, for multi-word phrases, each word’s subtotal.
4. Use Copy results to paste all values as text, or Copy link to share the phrase with the cipher table pre-filled.
5. When comparing two phrases, keep the cipher fixed and state it: “X and Y are both 74 in English Ordinal” is a checkable claim; “X and Y match” is not.

Gematrix’s three-column layout (Jewish / English / Simple) maps onto this table as Agrippa Latin / Sumerian / English Ordinal^{[4] Source: Gematria calculator}, so values quoted from there can be checked directly.