Matching, without mixing systems
Synastry overlays two charts. Guna Milan scores eight kootas

Synastry and guna milan both ask how two people fit, and they do not use the same method. Synastry, in western practice, lays one natal chart over the other and reads the contacts. Guna milan on Jyothish SI is the Ashtakoota score: eight kootas, 36 points, plus a Mangal Dosha check and a look at the partnership houses. Both methods fail if either birth time is a guess.
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Ashtakoota, as this site scores it
The eight kootas are Varna, Vashya, Tara, Yoni, Graha Maitri, Gana, Bhakoot, and Nadi. They total 36 points. In the report this site writes, 18 or more is described as acceptable, 24 or more as good, and 28 or more as excellent. Those bands are the product's own labels for the count. They are not a guarantee of a marriage.
The same compatibility pass reviews Mangal Dosha and the partnership houses on the two sidereal charts. A high koota score with a badly recorded time is still a score of the wrong Moon positions, because several kootas depend on the Moon's nakshatra.
Enter both birth cities and both clock times. Do not reuse one person's noon as a stand-in for the other.
What western synastry is doing instead
Synastry takes two tropical natal charts, in the usual English-language version, and studies how one person's planets fall on the other's houses and aspects. It is an overlay, not an eight-row score. A couple can have a synastry discussion in one app and an Ashtakoota number in another and feel they were told two stories. They were. The zodiac may differ as well, if one chart is tropical and the other is sidereal with Lahiri.
This site does not convert the Ashtakoota total into a synastry aspect list. If you want the guna milan, use the compatibility tool on the two Kundlis. If you want tropical aspects, use a tropical program and keep the label.
Do not add the 36-point score to a synastry percentage and call the sum a scientific result. They are not in the same units.
The birth times matter more than the brand
Kootas that use the nakshatra will move if the Moon changes nakshatra. That can happen when the birth time is off by enough to shift the Moon, and it can happen when the zone offset is applied twice. A summer birth in America, Europe, or Australia needs the daylight-saving rule of that place and year. A birth in India does not, because Asia/Kolkata does not shift.
If one family has a certificate and the other has a remembered hour, say which is which. Run the remembered hour at the edges of the window before you treat 28 points as a stable fact.
Mangal Dosha is read from Mars in certain houses. A wrong lagna moves Mars's house. The dosha check is then a check of the wrong chart.
How to read the number you get
Start with the total, then the kootas that scored low, not with a single word such as perfect. Bhakoot and Nadi are the rows families worry about. A low score there is a topic for a person who knows the system, not an automatic refusal printed by a website.
Then look at the two lagnas and the two 7th lords on the sidereal charts. The koota total does not describe career, health, or a date for the wedding. Those are other questions, and they need the individual charts and the dashas.
The free chart is still per person. Matching uses both figures. A PDF of one Kundli is not a matching report.
Searches that land on the wrong method
Kundli matching, kundali matching, horoscope matching, and guna milan are the Vedic wording. Synastry, compatibility chart, and birth chart compatibility are the western wording. App-store keyword pages show AstroSage and similar products ranking on kundli and kundali, and Co-Star and Sanctuary ranking on birth chart language. This site's match is Ashtakoota on sidereal charts. There is no Ahrefs file behind those names. They are the labels on the public app listings, not a volume we measured.
If you came for synastry aspects in the tropical zodiac, you will not find that overlay here. If you came for the 36-point match, enter both births and read the kootas, the dosha note, and the partnership houses together.
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Frequently asked questions
Is synastry the same as guna milan?
No. Synastry overlays two natal charts, usually tropical. Guna milan here is Ashtakoota: eight kootas and 36 points, on sidereal charts, with a Mangal Dosha review.
What score does this site call good?
The report text treats 18 or more as acceptable, 24 or more as good, and 28 or more as excellent, out of 36. The bands are labels for the count, not a promise about the marriage.
Do both people need a birth time?
Yes, if you want houses and a stable Moon nakshatra. Several kootas use the nakshatra. A guessed noon can change the score.
Can I match a tropical chart with a Kundli?
Not usefully. Convert both births in one system. This site will compute both as sidereal Lahiri charts and then score Ashtakoota.
Your free Kundli + AI astrologer, personalised Vedic readings, not guesswork
The predictions above cover all 12 signs. YOUR chart is unique, get a free Kundli, then ask the AI astrologer anything about love, career, money, and timing.
Free signup · no credit card · personalised from your real birth chart
