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Free Kua Number Calculator

Your Kua (gua) number is a personal direction number from feng shui's Eight Mansions system, calculated from your birth year and gender. It tells you which compass direction supports you. Free, no account.

Gender

The Eight Mansions system is defined only for these two categories, so the calculator asks for the one your birth record uses.

Common questions

What is a Kua number?
A number from 1 to 9 calculated from your birth year and gender, from feng shui's Eight Mansions (Ba Zhai) system. Each number belongs to the East or West group and has its own set of favourable and unfavourable compass directions.
Why does gender matter here?
The traditional formula is defined in two versions, one for men and one for women, so the same birth year gives different numbers. The system as it has come down to us has no third category, and this calculator does not pretend otherwise.
Why does the month of my birth date matter?
The Kua calculation runs on the Chinese solar year, which begins around February 4 — the same boundary our Chinese Zodiac Year and Bazi tools use. If you were born in January or before February 4, the calculator uses the previous year.