Free Kua Number Calculator
Enter your birth date and gender. You'll get your East or West group, your four favourable directions, and four to avoid - with one short line on how to use each. Chinese New Year boundary handled automatically.
Your number sorts you into the East or West group and gives you four supportive directions. The guide page walks through what each one is for.
You now have your four supportive directions and your four to handle with care. The Compass reads them for your Kua: which wall the headboard wins, which way the desk faces, which corner of your home the year asks you to leave alone, and a seven-day way to test one change. Your name on the cover, in your inbox about a minute after you pay. The whole home, every room and every life area, is the Complete Home Compass, $69.
Your directions are one half of the timing. The Good-Days calendar marks the days this season favours for beginnings, free on the page, and we email you the printable link.
Create a free account to keep this chart, view a printable version, and email it to yourself. The calculator stays free either way.
Your Kua
Curious about your BaZi chart too? Your Kua number reads your directions; your BaZi reads you. Try the free BaZi (Four Pillars) calculator →
Your Kua number is a single digit from one to nine, derived from your birth year and gender. It belongs to the Eight Mansions (Ba Zhai) system of Classical feng shui. The number sorts you into one of two groups - East or West - and identifies four directions that traditionally support you and four that don't. People use it to choose which way their bed points, which way they face at a desk, and which room in a home becomes the bedroom.
Year, month, and day. The calculator handles the Chinese New Year boundary automatically: if you were born in January or early February, it figures out whether you belong to the previous Chinese-calendar year.
The traditional formula differs by gender. The post-2000 variant is handled automatically.
You'll see your Kua number, your group, your four favourable directions (Sheng Qi, Tian Yi, Yan Nian, Fu Wei) and your four to avoid (Huo Hai, Wu Gui, Liu Sha, Jue Ming), each with a one-line meaning. If a Chinese New Year adjustment was applied, the result card says so.
Your Kua number identifies four compass directions that traditionally support you - one for energy, one for health, one for relationships, one for stability - and four to avoid. Practitioners use the result to choose bed orientation, desk facing, and which rooms become primary spaces. It is a structured design tool: the result names the directions, and you decide what to do with them.
The traditional method sums the last two digits of your birth year, reduces to a single digit, then applies a gender-specific operation. Males born before 2000 subtract from ten; females add five. The result is your Kua. If it lands on five, it reassigns to two (male) or eight (female), since five sits at the centre of the Luo Shu and has no compass direction.
The traditional formula was calibrated to the previous astrological era. From the year 2000 onward, the male variant subtracts from nine instead of ten, and the female variant adds six instead of five. The calculator applies the right variant automatically based on the year you enter.
Yes. The Kua formula uses the Chinese solar-calendar year, not the Gregorian year. If you were born in January or early February before Chinese New Year of your birth year, you belong to the previous Chinese year for Kua purposes. That's why this calculator asks for your full birth date: we look up the Chinese New Year for your year (1900-2050 covered) and adjust automatically. You don't need to know the date yourself.
Eight Mansions assigns each of the eight compass directions a quality based on your Kua. Four are favourable (Sheng Qi, Tian Yi, Yan Nian, Fu Wei) and four are unfavourable (Huo Hai, Wu Gui, Liu Sha, Jue Ming). Tradition recommends orienting active functions toward favourable directions and placing containment functions like storage or utility rooms in unfavourable ones.
It is common for couples to have different Kua numbers and sometimes different groups. Add a second person to the calculator above. You'll see directions favourable for both, directions to avoid for both, and a list of conflicts where one partner's favourable direction is the other's unfavourable. The standard guidance is to assign conflicts by primary user of the room.
No. The Kua system is a culturally-developed scheme for organising space; its predictive validity is not established by external evidence. Treat the result as a non-arbitrary way to choose between four equivalent-seeming bed or desk orientations, not as a forecast. The methodology page explains how the formula works, and what the evidence does and does not say.
The calculator is free and works with no account. The calculation runs entirely in your browser, so when you use it without an account no birth data, no result, and no identifying information is sent to or stored on any server. If you choose to create a free account, we store the email you sign up with and any birth data or charts you choose to save, so we can show them to you again and, with your consent, email your chart. You can delete your account and its data at any time. See the privacy page for detail.
Your Kua number tells you about you: the directions that tend to support you and the ones to handle with care. The 2026 Feng Shui Planner reads the other layer, the year. It walks through which corners of any home to treat gently in 2026 and which days suit which kind of decision. The two sit together: your directions, and the year laid over them.