Calculate numerology

Reproduce a modern Pythagorean-numerology convention from birth-date digits and the ASCII letters in a full name.

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ToolNumerology Calculator
Input
Output
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Preview

How it works

A–Z cycles through values 1–9; all birth-date digits form the life-path sum, all name letters form the expression sum, and A, E, I, O, U form the soul-urge sum. Repeated digit addition stops at one digit or retains 11, 22, and 33, while strict UTC round-trip validation rejects impossible calendar dates.

Formula
reduction = repeatedly sum decimal digits until 1–9, 11, 22, or 33
  • Y counts as a consonant in this implementation, and punctuation, spaces, diacritics, and non-Latin letters add nothing.
  • UCL’s history of Pythagoreanism notes that this modern letter-substitution practice was not used by the ancient Pythagoreans.

Worked example

A name and a birth date
Input
											Full name: Jane Marie Doe
Birth date: 1990-06-15
Output
												Life path number: 4
Expression number: 1
Soul urge number: 5
Life path is master: no
Expression is master: no
Soul urge is master: no

When to use this

Modern chart readers reproduce name arithmetic, entertainment readings compare date and letter sums, and skeptical-thinking lessons separate deterministic calculations from personality evidence.

Edge cases

  • 2026-02-30 has the requested shape but fails Gregorian calendar validation instead of becoming a March date.
  • José contributes j, o, and s but not é, demonstrating that the letter chart is limited to unaccented A–Z.
  • Rhys contains none of the fixed vowels A, E, I, O, U and therefore cannot produce a soul-urge value.

References