Nadi Dosha Calculator

Three nadis in a zig-zag

The nadis are not three blocks of nine consecutive stars. They run in a back-and-forth pattern: Ashwini is Adi, Bharani Madhya, Krittika and Rohini Antya, Mrigashira Madhya, Ardra and Punarvasu Adi, and the sequence keeps turning at each end until Revati closes it as Antya. Each nadi ends up with nine nakshatras spread right round the zodiac, so neighbouring stars are often in different nadis while stars far apart can share one.

Adi, Madhya and Antya mean first, middle and last. The texts also pair them with the three doshas of Ayurveda — Vata, Pitta and Kapha — which is where the koota's traditional link with health and constitution comes from. The full table of all twenty-seven appears under the example, so you can read off any star without running the check.

How the 8 points are scored

Nadi is the heaviest single koota: 8 of the 36 points. Unlike Tara or Yoni it has no partial scores. The two Moons are either in the same nadi, which scores 0, or in different nadis, which scores 8. Because the scheme assigns the nadi by nakshatra alone, the pada and the sign play no part in the score itself; they matter only for the exceptions.

A rough sense of the odds follows from the table. With nine stars in each nadi, any partner star has about a one-in-three chance of landing in the same nadi as yours, so a zero here is common rather than rare. A 36-point total that loses its 8 on Nadi is still read koota by koota in a full matching; the total alone does not show where its points came from.

The exceptions the tradition lists

The matching tradition records situations where a shared nadi is not treated as a dosha. This calculator checks three of them, the ones that follow from the two birth stars alone. First, both Moons in the same nakshatra but in different signs, which can happen only with the nine stars that straddle a sign boundary, such as Krittika, Punarvasu or Dhanishta. Second, the same nakshatra in different padas. Third, the same Moon sign with different nakshatras.

When a pair meets one of these, the result says so in plain words and leaves the score at 0, because that is how it enters the 36-point total in every Ashtakoota table. Other exceptions in the literature depend on the lords of the two stars, on the navamsa or on the rest of both charts, and are left to a full reading. Which exceptions an astrologer accepts, and how far, differs between families and regions.

Why the pada is asked for

Each nakshatra is 13°20′ of the zodiac and is divided into four padas of 3°20′. Nine padas make one sign, so the pada fixes which sign the Moon is in. That matters twice here: the first exception needs the two signs, and the third compares them directly. Choosing the pada also lets the page tell you the Moon sign it implies, which is a quick check that the birth star you have noted is the one your chart shows.

If you know only the nakshatra, the nadi and the score are already certain; only the exceptions depend on the pada. Every Janam Kundli lists the Moon's nakshatra and its pada, usually as a number from 1 to 4 beside the star's name. The free Moon sign calculator on this site gives both from a date, time and place of birth.

One koota out of eight

Ashtakoota compares the two charts in eight ways — Varna, Vashya, Tara, Yoni, Graha Maitri, Gana, Bhakoot and Nadi — and the points add up to 36. Four of the kootas, Nadi among them, are read from the birth stars; the other four from the Moon signs. This page isolates the one koota people most often ask about, so you can see exactly where a zero comes from before looking at the whole match.

For the complete picture, the free kundli matching page reads both sets of birth details and scores all eight kootas together, and the Bhakoot dosha calculator explains the other well-known zero, the one read from the Moon signs. Neither page, nor this one, decides anything about a marriage; they show what the classical scheme computes, for reference.

What is nadi dosha in kundli matching?

It is the name for a zero on the Nadi koota, which happens when both partners' Moons are in nakshatras of the same nadi — both Adi, both Madhya or both Antya. Nadi carries 8 of the 36 Ashtakoota points, so it is the largest single score that can be lost. The tradition links it with health and children, and it also lists exceptions.

How do I find my nadi from my nakshatra?

Look up the Moon's nakshatra in your Janam Kundli and find it in the table on this page. Adi holds Ashwini, Ardra, Punarvasu, Uttara Phalguni, Hasta, Jyeshtha, Mula, Shatabhisha and Purva Bhadrapada; Madhya and Antya hold nine each in the same zig-zag order. Choosing the star in the calculator above names the nadi for you.

Is nadi dosha cancelled if both have the same nakshatra?

The tradition lists the same nakshatra in different padas, and the same nakshatra falling in different signs, as exceptions to a shared nadi. Partners born in the very same nakshatra and the same pada meet neither. This calculator shows which listed exceptions a pair meets and keeps the koota score at 0 either way, as the 36-point tables do.

Does the pada change the nadi?

No. All four padas of a nakshatra share its nadi, so the koota score is the same whichever pada you choose. The pada matters only for the exceptions, because it fixes the Moon sign, and two of the three exceptions checked here compare the two Moon signs or the two padas.

Can I check nadi dosha without a birth time?

If you already know both birth stars, yes: this page needs nothing else. If you do not, the Moon's nakshatra usually stays the same for most of a day, since the Moon spends about a day in each star, but on days when it changes nakshatra the time of birth decides which one applies. A full chart from the birth details settles it.

Is nadi dosha the same as bhakoot dosha?

No. Nadi compares the two birth stars and is worth 8 points; Bhakoot compares the two Moon signs and is worth 7. They can occur together or separately, and each has its own list of exceptions. The Bhakoot dosha calculator on this site covers the second one.