Two different letter tables
The Chaldean table assigns letters values from 1 to 8 only. No letter is worth 9. A, I, J, Q and Y are 1, F and P are 8, and O and Z are 7. The values follow sound rather than alphabetical order, which is why the table looks arbitrary next to the other one until you hear it read aloud.
The Pythagorean table is alphabetical and needs no memorising. A to I are 1 to 9, J to R repeat 1 to 9, and S to Z runs 1 to 8. I and R are both 9, a value the Chaldean table never gives to any letter. A name with several I or R letters moves the most between the two systems.
Because the tables disagree, a name that reads well in one can read badly in the other. That is not a fault in either system. It is the reason practitioners name the system they are using before they give a verdict, and the reason a report that does not say which table it used is hard to check.
Master numbers belong to one system
In the Pythagorean reading, 11, 22 and 33 are kept as they are instead of being reduced. They are treated as master vibrations: 11 the visionary, 22 the master builder, 33 the master teacher. A Pythagorean total that lands on 22 stops at 22 and is read there.
The Chaldean reading has no master numbers. Every total reduces to a single digit from 1 to 9, and the character of the name comes from the compound instead. That is why 22 can be the Master Builder in one system and The Good Man Blinded in the other without either being wrong inside its own rules.
Compound numbers are a Chaldean idea
The compound is the total before it is reduced. Chaldean keeps it and reads it as a reading in its own right. Two names that both reduce to 5 can read very differently: 23 is the Royal Star of the Lion, described as the most fortunate business compound, while 14 is Movement and Risk, where money moves fast in both directions.
Pythagorean reduces straight to the single digit and carries none of these readings. For a personal chart that is often enough. For an Indian business name, where the practical question is whether the name is safe to trade under, the compound is where practitioners say the verdict sits.
Which one to use
For a business name, a shop board, a brand or a domain in India, most practitioners work in Chaldean. It is the system the compound notes belong to, and it is the one the rest of the trade will check your name against if you go for a second opinion.
Pythagorean is still worth running. It is quick, it is what most Western reports use, and it is the only one of the two that will show you a master number. Where both systems agree that a name reads well, there is less left to argue about. Where they disagree, decide which reading matters for your use and be clear that you made a choice.
Whichever you lean on, keep the rest of the decision ordinary. The name has to be available at company registration, free of an existing trademark, easy to say on a phone call, and sensible on a shop board and a GST invoice. A number that suits you is one input into that list, not a replacement for it.
Try it on your own name
Common questions
- Which system is more accurate?
- Neither can be shown to be more accurate. Numerology is a traditional belief system rather than a tested one. The useful answer is that Chaldean is the convention for business names in India, and Pythagorean is the convention in most Western reports.
- Why does the same name give two different numbers?
- Because the letter tables differ. Chaldean assigns values 1 to 8 by sound and never uses 9. Pythagorean assigns 1 to 9 in alphabetical order. A name with several I or R letters moves the most between the two.
- Do master numbers appear in a Chaldean reading?
- No. Chaldean reduces every total to a single digit from 1 to 9. 11, 22 and 33 are kept unreduced only in the Pythagorean reading, where they are read as master vibrations.