Pythagorean System
Pythagorean System is the most commonly used numerology system. Letters are assigned numbers 1-9 (A=1, B=2... I=9, J=1...). The foundation of Western numerology.
Related Terms
Chaldean System
A numerology system dating to ancient Babylon. Letters are assigned numbers 1-8 (9 is a sacred number). Uses vibration-based calculation.
Reduction
The process of reducing multi-digit numbers to a single digit. For example, 28 → 2+8 = 10 → 1+0 = 1. Master numbers (11, 22, 33) are not reduced.
Numerology Chart
A comprehensive profile showing all of a person's core numerological numbers. Contains all numbers calculated from name and birth date.
Karmic Debt Numbers
The numbers 13, 14, 16, and 19. Represent lessons carried from past lives and karmic patterns to be overcome. These numbers are noted before reduction in calculations.
Personal Year Number
An annual cycle number calculated from your birthday, month, and current year. Each year in the 1-9 cycle carries a different theme and energy.
Challenge Number
A number showing the challenges and growth areas you'll face throughout life. Calculated from differences between numbers in the birth date.