What is Chaldean Numerology?

Chaldean Numerology is one of the oldest numerological systems in existence, originating with the Chaldeans of ancient Babylon (modern-day Iraq). Unlike the more common Pythagorean system, Chaldean Numerology assigns letters to numbers based on sound vibration rather than alphabetical order, and notably excludes the number 9 from its conversion chart, considering it a sacred and divine number.

The Chaldean Number Chart

1	2	3	4	5	6	7	8
A	B	C	D	E	U	O	F
I	K	G	M	H	V	Z	P
J	R	L	T	N	W
Q		S	X
Y

Note: 9 is treated as sacred and complete, reserved only for results, never assigned to a letter.

Chaldean vs. Pythagorean

Aspect	Chaldean	Pythagorean
Origin	Ancient Babylon	Ancient Greece
Assignment Basis	Sound vibration	Alphabetical order
Treatment of 9	Sacred, excluded from chart	Used normally
Name Used	Commonly used name	Full birth name
Compound Numbers	Given independent meaning	Primarily reduced to single digits

Key Features

Compound Numbers

Chaldean Numerology places significant importance on double-digit numbers before they are reduced. For example, 14 and 23 both reduce to 5, but in the Chaldean system they carry different vibrational qualities and interpretations.

Everyday Name

Rather than your birth certificate name, Chaldean Numerology uses the name you go by daily. The rationale is that the name people actually call you carries the vibration that most actively influences your life right now.

Which System Should You Use?

Pythagorean Numerology is more widely practiced today due to its simplicity, but Chaldean Numerology offers a deeper, vibration-based analysis rooted in one of humanity's oldest civilizations. Many serious practitioners study both systems and compare results for a more nuanced understanding.