What a life path number is
A life path number is a single figure derived from a date of birth by adding its digits. It is the number most numerology readings start from, and it is the only part of the process that is fully mechanical: the same date always gives the same number, and you can check any calculator by hand in under a minute.
The rule, exactly
Take the date as digits: day, month and all four digits of the year. Add them. If the total has more than one digit, add its digits, and repeat until one digit remains.
14 August 1984: 1 + 4 + 8 + 1 + 9 + 8 + 4 = 35, then 3 + 5 = 8.
6 June 1966: 6 + 6 + 1 + 9 + 6 + 6 = 34, then 3 + 4 = 7.
27 September 1990: 2 + 7 + 9 + 1 + 9 + 9 + 0 = 37, then 3 + 7 = 10, then 1 + 0 = 1.
Three additions, no lookup table, nothing hidden. Whatever a site tells you about your number, this is where the number itself came from.
The exception: 11, 22 and 33
One rule interrupts the reduction. In most schools, a total of 11, 22 or 33 is left as it is instead of being taken down to 2, 4 or 6. These are the master numbers.
29 January 1970: 2 + 9 + 1 + 1 + 9 + 7 + 0 = 29, then 2 + 9 = 11. The chain stops at 11.
1 April 1970: 1 + 4 + 1 + 9 + 7 + 0 = 22. The total is already 22, so it stays.
Not every school keeps them, and some write both values — 11/2, 22/4 — so that the reduced number stays visible. When a calculator disagrees with your arithmetic, this is the first thing to check.
Two conventions, and the dates where they disagree
There is a second way to do the reduction: reduce the day, the month and the year separately first, then add those three results and reduce again. For most dates both routes land on the same digit.
They do not always. 1 February 1970 by the whole-date route: 1 + 2 + 1 + 9 + 7 + 0 = 20, then 2 + 0 = 2. By the separate route: day 1, month 2, year 1 + 9 + 7 + 0 = 17, then 1 + 7 = 8; and 1 + 2 + 8 = 11, which stays as a master number. One route gives 2, the other 11.
Neither convention is the official one. What matters is that a source tells you which it used — a number without its method is a number you cannot check.
What the number is used for
A life path number is read as a description of tendencies, and the descriptions are the tradition's, not a measurement. Each number has an agreed cluster of associations that a school will phrase in its own words.
It is worth being clear about the size of the claim. One date in nine gives any particular number, so an enormous number of people share yours, and any description that fits all of them is necessarily broad.
The figure is also only one of several a date produces — the birthday number, the digit counts of the Pythagorean square, the personal year. A reading built on one number alone is a reading with one input.
Questions that come up
- Does the order of day and month matter?
- Not for the result. Addition does not care about order, so 08/11 and 11/08 give the same total. It matters only when you are reading a date somebody else wrote down and might mean a different day.
- Should I use my birth certificate date or the date I celebrate?
- The method uses the calendar date of birth. Where documents disagree, there is nothing in the method that resolves it — you would simply be calculating two different numbers.
- Does the time of birth change anything?
- No. Only the date is used. Astrology uses birth time; numerology of this kind does not, which is one of the clearer differences between them.
- Can a life path number change?
- No, the date does not change. Figures that do change over time, such as a personal year number, are calculated from the current year as well as the date, which is why they are recalculated annually.