Pythagorean
The modern Western default: the alphabet is laid out in order and numbered 1 through 9, over and over, until the letters run out.
Learn
The letter maps, the reduction rules, and where the four systems part ways.
Calcabala reads a name as letters, gives each letter a number, adds them up and reduces the total. Everything below is the whole method — there is nothing else happening.
Letter values are added, then the digits of that total are added, and again, until one result remains. Pythagorean, Chaldean and Hebrew stop at 9 or at a master number. Calcabala’s modern Tree-of-Life adaptation stops within 1–10 by a documented site convention, leaving 10 available to be read through Malkuth.
Calcabala preserves 11 and 22: when a total reduces to either, it stops there instead of collapsing to 2 or 4. 33 is not treated as a master number — a total of 33 reduces to 6. Some traditions do treat 33 as a master number; Calcabala does not, and says so rather than leaving it ambiguous.
A name is read as the letters A–Z. Accented Latin letters are read as their base letter — Â as A, Ç as C, Õ as O. Spaces, hyphens, apostrophes and punctuation carry no value. Characters from other writing systems cannot be read at all, and Calcabala reports them rather than quietly dropping them.
Every calculation on this site runs in your browser. There is no account and no server that receives a name or a birth date. Shared links carry reading details after the # in the address, which browsers do not transmit to a server. Calcabala counts visits with Google Analytics only if you accept it — and it is given the page address with everything after the # removed, so a shared reading never reaches Google either. Decline or change your mind from “Cookies” at the foot of any page.
Four ways of assigning a value to a letter, each with its own reduction rules.
Pythagorean
The modern Western default: the alphabet is laid out in order and numbered 1 through 9, over and over, until the letters run out.
Chaldean
Calcabala uses the commonly circulated 1–8 chart called Chaldean, an irregular modern letter map in which nine is not assigned.
Hebrew
Each Latin letter is routed to a Hebrew letter and takes that letter’s gematria value — which is why the totals here run into the hundreds.
Kabbalistic
Calcabala gives each Latin letter its ordinal position, A=1 through Z=26, then uses the result as a modern prompt for reflection through one of the ten Sephirot.
Every reading lands on one of these. Each page is the full portrait of that number.
Numerology is a symbolic system, not a science. It has no predictive power and no evidence behind it. Calcabala is built as a well-made instrument for reflection and entertainment, and it says so on every page rather than in the small print.
Read the premise and limitations of each one on its own page. Pythagorean is the most common modern Western map. The chart called Chaldean uses conventional irregular values. Hebrew is a Latin-to-Hebrew approximation, not traditional gematria. Kabbalistic is Calcabala’s modern alphabet-position adaptation of the ten Sephirot.
Because the four systems assign different values to the same letters, and one of them reduces to ten rather than nine. Compare All Systems shows the four answers side by side; none of them is a correction of the others.
No. There is no account and no database — every calculation runs in your browser, and the site is served as static files with nowhere to write to. Calcabala does count visits with Google Analytics, but only if you accept it, and it is handed the page address with everything after the # stripped off, so the name you typed is not in it.
Reading details are placed after the # in the address, which browsers do not send to a server. Anyone you send the link to can still read what is in it. A name reading can be shared as a link that carries only the numbers and your initials. A birth-date link encodes its details so they are not legible at a glance, but that is not encryption: anyone with the link can decode them.
Not yet. Calcabala calculates on the Latin alphabet A–Z. If you enter characters from another script it tells you which ones it could not read rather than transliterating them silently, because the transliteration would be a guess with a real effect on the result.