"What's the guna milan score?" is often one of the first questions when two families discuss a match. The number, between 0 and 36, comes from an eight-part calculation called Ashtakoot Guna Milan. The calculation is precise once its tables are fixed. What the score means is a matter of tradition, and it is not a validated measure of health, genetics or how a marriage will go.
Ashta + Koota: Eight Checks, One Total
Ashtakoot means "eight kootas": eight checks, each with its own maximum, adding up to 36. Every koota uses only two facts per person, the Moon nakshatra and the Moon sign at birth. Four kootas use the Moon sign (Varna, Vashya, Graha Maitri, Bhakoot: 15 points) and four use the nakshatra (Tara, Yoni, Gana, Nadi: 21 points). Nothing else in either chart enters the score.
The Eight Kootas
- Varna (1 point). Each Moon sign is placed in one of four traditional varna groups.
- Vashya (2 points). Each Moon sign is placed in an animal-type group (human, quadruped, aquatic and others), and the groups are compared.
- Tara (3 points). Nakshatras are counted from each partner's to the other's, and the remainders after dividing by 9 are scored.
- Yoni (4 points). Each nakshatra has a symbolic animal; the pair of animals is scored from a table.
- Graha Maitri (5 points). The lords of the two Moon signs are compared by natural friendship, neutrality or enmity.
- Gana (6 points). Each nakshatra is Deva, Manushya or Rakshasa; the pair is scored from a table.
- Bhakoot (7 points). The distance between the two Moon signs is counted. Pairs 2/12, 5/9 and 6/8 score 0; all others score 7.
- Nadi (8 points). Each nakshatra is Aadi, Madhya or Antya. The same Nadi for both partners scores 0; different Nadis score 8.
The traditional descriptions attached to each koota, such as "temperament" for Gana, "intimacy" for Yoni or "progeny" for Nadi, are symbolic labels. A nakshatra's Nadi is a classification of a 13°20' arc of the zodiac, not a blood group or a genetic test.
Score Bands Are Conventions
The thresholds quoted for the total vary between sources. The most widely repeated is a minimum of 18 out of 36. This site's Guna Milan calculator uses these bands:
- Below 18: not recommended
- 18 up to (not including) 24: acceptable
- 24 up to (not including) 28: good
- 28 and above: excellent
These are traditional conventions applied to a sum, not thresholds tested against marriage outcomes. Two couples with the same total can have very different koota breakdowns.
Nadi and Bhakoot: The Weighted Kootas and Their Exceptions
Many practitioners treat a zero on Nadi (Nadi Dosha) or Bhakoot (Bhakoot Dosha) as a concern even when the total is high. They also apply exceptions, and texts and teachers do not apply them uniformly. Commonly cited ones:
- Nadi Dosha is often treated as cancelled when the partners have the same Moon sign but different nakshatras, or the same nakshatra but different Moon signs. Some sources also accept the same nakshatra in different padas.
- Bhakoot Dosha is often treated as cancelled when both Moon signs have the same lord (for example Aries and Scorpio, both ruled by Mars, a 6/8 pair), and by some sources when the two lords are natural friends.
This site's calculator scores the kootas from the standard tables and does not apply these cancellations, so its report should be read together with the breakdown.
Worked Example
An illustrative pair: one partner's Moon in Rohini, the other's in Krittika, with both Moons in Taurus.
- Nadi: Rohini and Krittika are both Antya Nadi, so Nadi scores 0, a Nadi Dosha.
- Bhakoot: both Moons are in the same sign (a 1/1 relationship), so Bhakoot scores the full 7.
- Exception: same Moon sign, different nakshatras is one of the commonly cited Nadi cancellations. A practitioner who applies it would set the Nadi Dosha aside; one who does not would flag it. The arithmetic total stays the same either way.
Common Misconceptions
"The total is a compatibility percentage." It is a sum of eight table lookups based on two Moon positions per person. It has not been calibrated against how relationships turn out.
"A high score guarantees a happy marriage, and a low score a hard one." Even within the tradition, Guna Milan was one input among several. Outside the tradition, what matters in a relationship is shared values, communication, consent and support, which no score measures.
"Nadi Dosha means a genetic or health risk for children." There is no evidence for this. If you have health concerns about a pregnancy or hereditary conditions, a doctor or genetic counsellor can assess them properly.
Using a Guna Milan Report
If you use the report, read the koota breakdown and not just the total, check which rule set and score bands it uses, and note whether it applies any exceptions. Treat it as a description of a traditional calculation, not as a verdict on two people. A reflection drawn from the symbolism, not a prediction.
Sources & References
Astronomical data: Moon Nakshatra and Moon Rashi positions used in Guna Milan calculations are derived from real planetary longitudes via the astronomy-engine ephemeris library with the Lahiri (Chitrapaksha) ayanamsa. See our Methodology for full technical detail.
Astrological tradition: The interpretations above draw on the sources named under Classical references below. Where an interpretation is not tied to a named source, it is AstroMystra's paraphrase of common practice among teachers of the tradition, not a verified rule of prediction. AstroMystra's specific phrasing, examples, and emphasis are its own.
Classical references: Muhurta and matching conventions are treated in classical works such as Rama Daivajna's Muhurta Chintamani, and the general framework of planets and signs in Parashara's Brihat Parashara Hora Shastra (English translation by R. Santhanam, Ranjan Publications). These texts show what the tradition teaches. They do not verify that any placement predicts an outcome, this article paraphrases the tradition rather than translating one passage, and texts and commentators differ on details.