Discover your core numbers and their meanings
From a name and a date of birth this calculator returns four Pythagorean numbers, three Chaldean numbers, the Indian Moolank, Bhagyank and Naamank triple, and a Lo Shu grid. The four Pythagorean numbers are the Life Path from the date, the Destiny or Expression number from every letter of the name, the Soul Urge from the vowels alone and the Personality from the consonants alone. The birth day number and a set of lucky numbers are shown alongside them.
Three systems are computed rather than one because they use different letter tables and give different answers from the same name. Seeing all three side by side is more honest than picking one and presenting it as the answer, and it makes the disagreement between them visible, which is itself informative.
The Life Path reduces the month, the day and the digits of the year separately to single digits, adds those three, and then reduces the sum, stopping at 11, 22 or 33 if it lands on one of them, since those are treated as master numbers and are not reduced further.
The Destiny number adds the value of every letter of the name and reduces the same way; the Soul Urge does it with the vowels A, E, I, O and U only; the Personality does it with the consonants only.
The Pythagorean table is the cyclic grid where A is 1 through I is 9, then J restarts at 1 and so on to Z at 8. It is pure positional arithmetic, so the same letter always carries the same value regardless of where it sits in a name, and the whole calculation is reproducible by hand in a few minutes.
The Chaldean table assigns letters to the values 1 through 8 only, because 9 is held back and never assigned to a letter.
The mapping is 1 for A, I, J, Q and Y; 2 for B, K and R; 3 for C, G, L and S; 4 for D, M and T; 5 for E, H, N and X; 6 for U, V and W; 7 for O and Z; and 8 for F and P. The values are not positional, which is the sharpest difference from the Pythagorean grid.
This calculator keeps the raw sum before reduction as well as the reduced digit, because in the Chaldean system that compound number is read in its own right rather than being discarded. The Chaldean Soul Urge and Personality numbers are computed from the same table using vowels and consonants respectively, and a ruling planet is attached to the reduced digit.
In the Indian ank jyotish presentation, the Moolank or root number is the day of birth reduced to one digit, the Bhagyank is every digit of the full date of birth reduced to one, and the Naamank is the name reduced using the Chaldean values.
Each is mapped to a graha by the standard modern assignment: 1 to the Sun, 2 to the Moon, 3 to Jupiter, 4 to Rahu, 5 to Mercury, 6 to Venus, 7 to Ketu, 8 to Saturn and 9 to Mars.
The Lo Shu grid counts how many times each digit from 1 to 9 appears in the birth date and lays those counts out on the three by three magic square.
Digits that never appear are the missing numbers; lines of the square that are completely filled are reported as arrows present, and lines that are completely empty as arrows to develop. The grid is a display of what the digits of your date actually contain, and the counts can be checked by hand against your own date in seconds.
None of it has a Sanskrit source. There is no classical locus for the Chaldean letter table, none for Moolank and Bhagyank, none for the number to graha assignment and none for the friend and enemy grid used to decide whether a name harmonises.
The Chaldean values as they circulate today come from a 1926 London book by the author writing as Cheiro, and the A to I cyclic grid is modern Western numerology, so called Pythagorean without any evidence connecting it to Pythagoras.
This matters because the rest of this site holds interpretations to a named text at chapter and verse, and numerology cannot meet that bar.
Rather than registering a modern author beside Parashara and Varahamihira so that a classical-looking source badge would appear, the app names the modern authors where there are any, says plainly where there are none, and never renders a classical citation on a numerology surface. What is offered here is arithmetic you can verify, with an accurate account of where the arithmetic came from.