How numerology works
Numerology rests on one simple operation: reduction. You add the digits of a number until only one digit is left. For example, 1995 becomes 1 + 9 + 9 + 5 = 24, and 24 becomes 2 + 4 = 6.
Names work the same way once each letter is given a number. In the common Western system, A = 1, B = 2 and so on up to I = 9, and then the count starts again at J = 1.
Each of the numbers 1 to 9 has a traditional meaning: 1 for independence, 2 for partnership, 3 for expression, and so on. See all number meanings for the full list.
Try it with your own birth date
The Life Path number is the usual starting point. The calculator shows every step.
Where numerology comes from
Giving meaning to numbers is very old. Greek isopsephy and Hebrew gematria both added up the number values of letters to find links between words. The followers of Pythagoras (6th century BCE) believed numbers were the key to understanding the world and attached qualities to them, such as justice or marriage.
The numerology most people use today is much more recent. The letter table and the idea of a "Life Path" were developed by writers in the late 19th and early 20th centuries, such as L. Dow Balliett. Calling it "Pythagorean" honours the philosopher; there is no evidence that he used this system.
Likewise, "Chaldean" numerology is named after ancient Babylon, but no Babylonian source for its letter table has been found. It became popular in the 1920s through the palmist Cheiro. Our methodology page lists the books we rely on.
The three main systems
| System | How it works | Best known for |
|---|---|---|
| Pythagorean | Letters A–Z numbered 1–9 in order | Life Path and name numbers; the most common system in the West |
| Chaldean | Letters numbered 1–8 by sound; 9 is not used | The name you use every day, and compound numbers like 23 or 38 |
| Lo Shu grid | Birth-date digits placed on a 3×3 magic square | Seeing which numbers are present, repeated or missing |
Pythagorean and Chaldean can give different results for the same name. Our side-by-side comparison explains why.
The six core numbers in a chart
A full numerology chart has several numbers, each from a different source:
- Life Path: from your full date of birth. The main number in a chart.
- Birthday number: from the day of the month you were born.
- Expression number: from every letter of your birth name.
- Soul Urge: from the vowels of your name.
- Personality number: from the consonants of your name.
- Personal Year: from your birth month and day plus the current year. It changes every year.
The numerology chart calculator works out all six at once.
Master numbers 11, 22 and 33
When a sum comes to 11, 22 or 33, most numerologists stop there instead of reducing it further. These master numbers are read as stronger versions of their roots (2, 4 and 6) with extra intensity. The idea became standard in 20th-century numerology.
Read more: master number 11, 22 and 33.
What numerology can and cannot do
Numerology can give you a vocabulary for thinking about yourself, a prompt for reflection, or a fun way to start a conversation. Many people find the descriptions useful in the same way they find personality quizzes useful.
It cannot predict events, diagnose anything, or tell you whether a relationship or business will succeed. There is no reliable evidence that numerology numbers match personality or life outcomes. Please do not base health, money, legal or relationship decisions on it. See our disclaimer.
Frequently asked questions
Is numerology real?
The arithmetic is real and repeatable, but the meanings are a belief system, not science. There is no reliable evidence that numerology describes personality or predicts events.
What is the most important number in numerology?
Most numerologists start with the Life Path number, which comes from your full date of birth. Use the Life Path calculator to find yours.
Which numerology system should I use?
Pythagorean is the most common and the easiest to learn. Chaldean is popular in India and with people interested in name changes. Try both and see which descriptions you find more useful.
Do I use my birth name or my current name?
Traditional numerology uses the full name on your birth certificate for the core name numbers. Many people also calculate their current name to see how it compares.