Ayadi Calculator
Ayadi (Aya, Vyaya, Yoni, Nakshatra, Vara, Tithi) from the length and breadth of the house, by the Mayamata method. Income should beat expense, the yoni should be odd, and the weekday and tithi auspicious. In Tamil Nadu, Manaiyadi is the main measurement check - see the Manaiyadi calculator.
Mayamata method on the area (length x breadth). Measure in the unit your sthapathi uses; the nakshatra should also suit the owner's birth star.
- Aya (income)12Income is more than expense · (area x 8) / 12, remainder 12
- Vyaya (expense)10Compared with Aya · (area x 9) / 10, remainder 10
- YoniKakaAn even yoni is not preferred · (area x 3) / 8, remainder 8
- NakshatraSwatiShould suit the owner's birth star · (area x 8) / 27, remainder 15
- Vara (weekday)FridayAn auspicious weekday · (area x 9) / 7, remainder 6
- TithiAmavasyaA tithi to avoid · (area x 8) / 30, remainder 30
CAT AI designs the plan to Tamil Nadu rules, checks it against Vastu and fixes what is off - then structural, architectural, electrical and plumbing drawings, a 3D view and the BOQ.
Vastu Shastra is traditional guidance; these tools follow commonly used rules in Tamil Nadu. They do not replace your engineer, sthapathi or the local building rules.