Ashtakoota (Guna Milan) out of 36, with Mangal and Kaal Sarpa checks.
This tool compares two birth charts using the Ashtakoota (Guna Milan) system — Varna, Vashya, Tara, Yoni, Graha Maitri, Gana, Bhakoot and Nadi — that together carry 36 points, plus Mangal (Manglik) Dosha and Kaal Sarpa Dosha for both charts. Above 18 points is generally treated as acceptable, above 25 as very good.
Porutham is the South Indian term for marriage compatibility matching. This calculator uses the Ashtakoota (Guna Milan) system, which scores a couple out of 36 points across eight factors.
Varna 1, Vashya 2, Tara 3, Yoni 4, Graha Maitri 5, Gana 6, Bhakoot 7 and Nadi 8 — thirty-six points in total. Nadi and Bhakoot carry the most weight, which is why they dominate a low score.
Convention treats 18 and above as workable and the high twenties as strong, but the total alone is not the whole picture: which Kootas were lost matters more than the number, and traditional practice also weighs Mangal (Chevvai) and Kaal Sarpa dosha, both of which this calculator checks.