What Are Alphabet Numbers in Numerology?
In numerology, every letter of the alphabet is assigned a specific number value. These letter-number assignments are the foundation of all name-based numerology calculations — your Destiny Number, Soul Urge Number, Personality Number, and Business Name Number are all derived by converting the letters of a name into numbers and then summing and reducing them.[1]
The concept is straightforward: each number 1 through 9 carries a distinct vibrational energy. The number 1 represents independence, leadership, and new beginnings. The number 2 represents partnership, diplomacy, and sensitivity. And so on through 9, which represents completion, humanitarian ideals, and universal wisdom. When you convert the letters of your name into numbers, the resulting total reveals the dominant vibrational energy your name carries — the frequency you broadcast to the world every time someone says, writes, or thinks your name.
There are two major systems for assigning numbers to letters, and they produce different results for most names. The Chaldean system, the oldest known numerology system, assigns numbers based on the sound vibration of each letter. The Pythagorean system, the more widely used Western system, assigns numbers in simple alphabetical order. Understanding both charts — and the philosophy behind each — is essential for anyone serious about numerology.[2]
The Complete A-Z Alphabet Charts — Chaldean & Pythagorean
The two tables below show every letter's number value in both systems. Notice that the Chaldean chart only uses numbers 1 through 8 (the number 9 is reserved as sacred), while the Pythagorean chart uses all numbers 1 through 9.
How to Use the Numerology Alphabet Chart
Converting a name to a numerology number is a simple four-step process. Once you know how, you can calculate the number for any name — your own, a friend's, a business, even a pet's name.
Step 1: Write Out the Name
Choose the name you want to analyze. In the Pythagorean system, you typically use your full birth certificate name (the name as it appears on your official documents). In the Chaldean system, you use the name you are most commonly known by — the name people actually call you in daily life. This distinction matters because the two systems believe different names carry your active vibration.[1]
Step 2: Look Up Each Letter's Number
Using the appropriate chart above (Chaldean or Pythagorean), find the number value for each letter in the name. Write the number beneath each letter so you can see the full breakdown.
Step 3: Add All the Numbers Together
Sum all the individual letter values to get a raw total. This total is your unreduced name number — in Chaldean numerology, this compound number carries its own meaning before you reduce it further.
Step 4: Reduce to a Single Digit
If your total is a double digit (anything above 9), add those digits together. Keep reducing until you reach a single digit between 1 and 9. The exceptions are Master Numbers — 11, 22, and 33 — which are kept as-is in the Pythagorean system because they carry amplified higher-octave energy.[2]
Chaldean vs Pythagorean Alphabet — Key Differences
The two systems agree on some letter values (A=1 in both, for example) but disagree on many others. Here are the fundamental differences every numerology student should understand:
Assignment Philosophy
The Pythagorean system assigns numbers purely by alphabetical position. A is the 1st letter, so A=1. B is the 2nd, so B=2. When you reach I (the 9th letter), the cycle resets: J=1, K=2, and so on. This is logical, consistent, and easy to memorize.[2]
The Chaldean system assigns numbers based on the vibrational frequency of each letter's sound. Letters that produce similar sounds are grouped together regardless of their alphabetical position. For example, C, G, L, and S all share the value 3 because the Chaldeans recognized a shared vibrational quality in these sounds. This makes the Chaldean chart harder to memorize but arguably more meaningful.[1]
The Number 9
In Pythagorean numerology, 9 is a normal digit assigned to the letters I and R. In Chaldean numerology, 9 is sacred and never assigned to any letter. The Chaldeans observed that 9 has unique mathematical properties — any number multiplied by 9 produces digits that sum back to 9 — and they interpreted this self-regenerating quality as evidence of divine completeness.
Letters That Differ Most
Some letters have dramatically different values between the two systems. The letter F is 6 in Pythagorean but 8 in Chaldean. The letter H is 8 in Pythagorean but 5 in Chaldean. The letter O is 6 in Pythagorean but 7 in Chaldean. These differences mean that the same name often produces completely different totals in each system, leading to different interpretations.
Which Name to Use
Pythagorean analysis typically uses your birth certificate name — the vibration you entered the world with. Chaldean analysis uses your commonly known name — the vibration actively resonating around you. A person named “William” on their birth certificate but called “Will” by everyone would analyze “William” in Pythagorean and “Will” in Chaldean.
How Your Name's Numbers Are Calculated — A Worked Example
Let's walk through a complete calculation using the name “SARAH” in both systems to show exactly how the alphabet chart translates into a numerology reading.
Pythagorean Calculation for “SARAH”
Using the Pythagorean chart: S=1, A=1, R=9, A=1, H=8. The raw sum is 1+1+9+1+8 = 20. Since 20 is a double digit and not a Master Number, we reduce: 2+0 = 2. The Pythagorean Destiny Number for “SARAH” is 2 — the number of partnership, diplomacy, and sensitivity.[2]
Chaldean Calculation for “SARAH”
Using the Chaldean chart: S=3, A=1, R=2, A=1, H=5. The raw sum is 3+1+2+1+5 = 12. In Chaldean numerology, the compound number 12 itself carries meaning — it is associated with the sacrifice of the individual for the collective, a number of learning through experience. Then we reduce: 1+2 = 3. The Chaldean name number is 3 — the number of creativity, self-expression, and joy, associated with the planet Jupiter.[1]
Why the Results Differ
Notice that the same name “SARAH” produces a Destiny Number of 2 in the Pythagorean system and a name number of 3 in the Chaldean system. This is not an error — it reflects the fundamental philosophical difference between the two approaches. The Pythagorean result emphasizes the structural energy of the name based on letter positions, while the Chaldean result emphasizes the vibrational energy based on how the name sounds. Many experienced practitioners calculate both numbers and read them together for a fuller picture.
Another Example: “JAMES”
Pythagorean: J=1, A=1, M=4, E=5, S=1. Total = 1+1+4+5+1 = 12. Reduce: 1+2 = 3. Destiny Number is 3.
Chaldean: J=1, A=1, M=4, E=5, S=3. Total = 1+1+4+5+3 = 14. The compound number 14 is a karmic debt number in many traditions, associated with adaptability and change through experience. Reduce: 1+4 = 5. Name number is 5 — the number of freedom, travel, and sensory experience, associated with the planet Mercury.
