Hebrew Gematria: The Original Letter-Number System
Hebrew gematria is the oldest surviving letter-number coding practice. Before Arabic numerals existed, Hebrew letters were the number system. Aleph through Tet covered 1-9, Yod through Tsade covered the tens (10-90), and Qof through Tav covered the hundreds (100-400). This means every Hebrew word is inherently also a number, a fact that Torah scholars and Kabbalists have explored for over two millennia.
The practice entered English-speaking culture through the letters to numbers converter tradition, where each letter of any alphabet maps to a numeric value. English gematria systems like Ordinal (A=1, Z=26) are modern adaptations of this ancient Hebrew idea. The key difference is scale: Hebrew letter values reach 400 (or 900 with finals), while English Ordinal maxes out at 26.
The Three Systems Explained
Mispar Hechrachi (Standard) is the default system. Each letter carries the value described above. The word chai (life, spelled Chet-Yod) equals 8+10 = 18. This is why 18 is a lucky number in Jewish tradition, and monetary gifts are often given in multiples of 18. Final letter forms (sofit) keep the same value as their regular counterparts.
Mispar Katan (Reduced) strips trailing zeros from each standard value. Yod (10) becomes 1, Kaf (20) becomes 2, Qof (100) becomes 1. The result is a single digit for every letter, similar to the Full Reduction systemin English gematria. Kabbalists use Mispar Katan when they want to compress a word's essence to its most elemental number.
Mispar Gadol (Great Value) distinguishes the five final letter forms by giving them values 500-900: Kaf Sofit=500, Mem Sofit=600, Nun Sofit=700, Pe Sofit=800, Tsade Sofit=900. This extends the Hebrew numbering system to cover every integer from 1 to 999 (using letter combinations). Standard letters retain their normal values.
Famous Hebrew Gematria Values
18 (Chai, life): Chet(8) + Yod(10). The most widely known gematria value outside of scholarly circles. Jewish charitable donations are traditionally given in multiples of 18.
26 (YHWH, the Tetragrammaton):Yod(10) + He(5) + Vav(6) + He(5). The four-letter name of God in Hebrew totals 26 — the same number that English Ordinal gematria gives to the word "God" (G=7 + O=15 + D=4). This cross-language coincidence is frequently cited in gematria discussions.
666 (Number of the Beast): In the Book of Revelation, 666 is associated with an unnamed adversary. Through Greek isopsephy (the Greek equivalent of gematria), scholars identified "Nero Caesar" spelled in Hebrew letters (Nun-Resh-Vav-Nun Qof-Samekh-Resh) as summing to 666. The gematria search tool can find English words matching any target number.