Enter your birth year and select your gender to calculate your Kua number. The Kua number is used in Feng Shui to determine your auspicious and inauspicious directions.

Kua Number Formula

The following formula is used to calculate the Kua number:

For Males: Kua Number = (10 – (Sum of last two digits of birth year % 9)) % 9
For Females: Kua Number = ((Sum of last two digits of birth year + 5) % 9) % 9

Variables:

  • Kua Number is the number used in Feng Shui.
  • Birth Year is the year of birth of the individual.
  • Gender is the gender of the individual (Male or Female).

To calculate the Kua number for males, subtract the sum of the last two digits of the birth year from 10, then take that result modulo 9. For females, add 5 to the sum of the last two digits of the birth year, then take that result modulo 9.

What is a Kua Number?

A Kua number is a personal number that is used in Feng Shui to determine one’s auspicious and inauspicious directions. It is based on the year of birth and gender of an individual. The Kua number can influence various aspects of life, including health, wealth, and personal growth.

How to Calculate Kua Number?

The following steps outline how to calculate the Kua Number:


  1. First, determine the last two digits of your birth year.
  2. Next, calculate the sum of these two digits. If the sum is a two-digit number, add those digits together to get a single digit.
  3. For males, subtract this sum from 10 and then take the result modulo 9. If the result is 0, the Kua number is 9.
  4. For females, add 5 to this sum and then take the result modulo 9. If the result is 0, the Kua number is 9.
  5. Finally, use the calculator above to verify your Kua number.

Example Problem:

Use the following variables as an example problem to test your knowledge.

Birth Year = 1985

Gender = Male

Sum of last two digits of birth year = 8 + 5 = 13

Sum of digits = 1 + 3 = 4

Kua Number for Male = (10 – 4) % 9 = 6