Eight Mansions · Free tool

What's your lucky sleep direction?

Your Kua number is a personal feng shui number calculated from your birth year and gender. It reveals your four auspicious directions — and the single best one to point your head toward while you sleep.

Enter your details

Gender

Born in January or early February? Traditional feng shui uses the solar year, which begins around Feb 4. If your birthday is before that, add your month and day above and we'll count you in the previous year automatically.

How your Kua number is calculated

Take the last two digits of your birth year and reduce them to a single digit by adding the digits together. Then apply the formula for your gender and century:

  • Male, 1900–1999: 10 minus the digit
  • Female, 1900–1999: 5 plus the digit
  • Male, 2000 onward: 9 minus the digit
  • Female, 2000 onward: 6 plus the digit

Reduce the result to a single digit (1–9). If a calculation lands on 5, it's treated as 2 for men and 8 for women, because 5 belongs to the earth center rather than a compass direction.

Your personal compass groups

Kua numbers split people into two groups. East-group numbers (1, 3, 4, 9) sit best toward east, south, north, or southeast. West-group numbers (2, 6, 7, 8) favor west, northwest, southwest, or northeast. Our calculator lists your best (Sheng Qi) direction first — that's the one to point your head toward for the strongest benefit.

What the calculator can't replace

Your compass direction works together with the structural rules — headboard on a solid wall, feet not pointing at the door, no mirror reflecting the bed. If the room can't line up perfectly, keep the structural rules first. See our full bed placement checklist to get both right.

Feng shui is traditional guidance, not medical advice. For persistent sleep trouble, please see a healthcare professional.