Your Soul Urge Number, also called the Heart's Desire number, is the sum of the vowels in your full name reduced to a single digit, with 11, 22 and 33 kept unreduced as master numbers. This calculator adds A, E, I, O and U at their Pythagorean values, shows the total and the reduced root, and names the planet that rules it.
In numerology the vowels of your name carry the voice of your inner self. Adding them gives the Soul Urge Number (Heart's Desire), which describes your deepest motivations - what you long for and what makes you feel fulfilled, beyond how you appear to others.
It sits alongside two related name numbers: the Expression (Name) Number from all the letters, and the Personality Number from the consonants. Together they show your inner wants, your outer self and your full expression.
The Soul Urge is built from the vowels alone. This calculator counts A, E, I, O and U and treats Y as a consonant, so Y is added to the Personality number instead. Some numerologists count Y as a vowel where it sounds like one, which is why a hand calculation can differ from the figure shown here.
The reduction preserves the master numbers: a vowel total that lands on 11, 22 or 33 is left there rather than being carried down to 2, 4 or 6. Every other total falls to a single digit from 1 to 9. Only the letters A to Z are read at all, so spaces, hyphens, apostrophes and full stops after initials make no difference to the sum.
The number is computed from whatever string you type, so it changes with the name. The full name recorded at birth is the conventional input. A married surname, an initial standing in for a middle name, or the short everyday form of a first name each give a different vowel total and therefore a different Soul Urge.
That is not a defect in the method; it is the method. The number is a property of the spelling, not of the person behind it. If you want one figure to work with, settle on one spelling and use it consistently. If you are comparing forms of your name, run each one and read the results side by side rather than looking for the true one.
For educational purposes. Astrological interpretations are traditional and not a substitute for professional advice.