Nadi Dosh is the most heavily weighted flaw in Ashtakoot Guna Milan, the eight-fold system used to match a couple's horoscopes for marriage. It arises when both partners fall in the same Nadi — Aadi, Madhya or Antya — decided by each person's Janma nakshatra, which scores the Nadi koota at 0 out of 8. This free calculator takes both people's birth details, shows each one's Moon sign and nakshatra, gives the Nadi koota score, and rolls it into the overall 36-point Guna Milan match.
Every person's Janma nakshatra (birth star) places them in one of three Nadis. Nadi carries the highest weight of the eight kootas — up to 8 of the 36 Guna Milan points. When the partners fall in different Nadis the pair earns the full 8 points; when both share the same Nadi the koota scores 0, and that is a Nadi Dosh.
Because Nadi is linked in the texts to health, constitution and progeny (santan), sharing the same Nadi is treated as the most serious mismatch in Ashtakoot. The shastras also record several exceptions (Nadi Dosh parihar) under which the flaw is held to be nullified, so a same-Nadi result is read in context rather than as an automatic bar.
Nadi Dosh occurs when both partners have the same Nadi — Aadi, Madhya or Antya — determined by their birth nakshatra. In Ashtakoot Guna Milan this scores 0 out of 8 and is considered unfavourable, chiefly for health and progeny.
Nadi is the highest-weighted of the eight kootas, worth up to 8 of the 36 total Guna Milan points. Different Nadis earn the full 8, while the same Nadi scores 0 and forms a Nadi Dosh.
No. Classical texts list several exceptions (parihar) that nullify the dosh, and the match is judged on all eight kootas together, not on Nadi alone. Treat a same-Nadi result as a prompt to consult an astrologer, not a final verdict.
36-point Gun Milan, Manglik & dosha analysis, Navamsa insights and remedies for a lasting match.
For educational purposes. Astrological interpretations are traditional and not a substitute for professional advice.