Two horoscopes get checked. Six match. Four don't. Is the marriage on or off?
That's the question every family runs into when they print out a porutham report. The answer is more nuanced than the score suggests, but the score is meaningful — if you understand what each of the ten checks is actually measuring.
Here's the full picture.
The 30-second answer
Porutham (also written Kuta in Sanskrit, Guna Milan in north India) is the classical Vedic marriage compatibility analysis. The Kerala tradition uses ten parameters; the north Indian Ashtakuta system uses eight (and weights them differently). At [AIJathakam](https://www.aijathakam.com/porutham) we use the ten-porutham system per the Kerala lineage.
Each porutham is a yes/no or graded check on a specific aspect of compatibility — emotional, sexual, life-stage, longevity, prosperity, mental, family. They're computed from both partners' birth nakshatras and rashis.
A "good" match is generally 6 or more poruthams matching out of 10 with no critical failures (especially Rajju). Below 5 means significant work would be needed. Above 8 is unusually strong.
The ten poruthams
| # | Porutham | What it checks |
|---|---|---|
| 1 | Dina | Longevity and health stability of the couple |
| 2 | Gana | Temperament — divine, human, or demonic alignment |
| 3 | Mahendra | Offspring, lineage continuation |
| 4 | Sthree Dheerga | Long-term well-being and prosperity of the bride |
| 5 | Yoni | Sexual and instinctive compatibility |
| 6 | Rasi | Mental compatibility, daily-life harmony |
| 7 | Rajju | Marriage longevity (the most heavily weighted in Kerala) |
| 8 | Vedha | Astrological obstruction between nakshatras |
| 9 | Vasya | Mutual influence, who tends to lead |
| 10 | Graha Maitri | Friendship between the two moon-sign lords |
Each is checked from both partners' janma nakshatra (birth nakshatra) and janma rashi (moon sign). Some require additional data points — Rajju cares about which "rope" (vertical thread) of the nakshatra grid you're on; Vedha about specific obstructive nakshatra pairs.
Now in detail.
1. Dina Porutham — longevity and health
Dina checks the count between the bride's nakshatra and groom's nakshatra. Specific count residues (after dividing by 9) are auspicious; others are not. The classical reading: a good Dina match indicates the couple's health and life events flow in compatible cycles. A mismatched Dina suggests friction in long-term health and stamina.
Mismatches here are not necessarily catastrophic. They're a signal to take both partners' health seriously and not assume one will outlast the other by decades.
2. Gana Porutham — temperament alignment
Each nakshatra is classified into one of three ganas:
- Deva (divine) — Ashwini, Mrigashira, Punarvasu, Pushya, Hasta, Swati, Anuradha, Shravana, Revati
- Manushya (human) — Bharani, Rohini, Ardra, Purva Phalguni, Uttara Phalguni, Purva Ashadha, Uttara Ashadha, Purva Bhadrapada, Uttara Bhadrapada
- Rakshasa (demonic) — Krittika, Ashlesha, Magha, Chitra, Vishakha, Jyeshtha, Mula, Dhanishta, Shatabhisha
Best matches:
- Deva + Deva — excellent
- Manushya + Manushya — excellent
- Deva + Manushya — good
- Manushya + Rakshasa — workable
- Deva + Rakshasa — significantly mismatched
- Rakshasa + Rakshasa — usually compatible (similar temperament) but intense
Note: "Rakshasa" doesn't mean "demonic" in any moral sense. It means high-intensity, transformation-oriented, sometimes confrontational. Some of history's strongest leaders are Rakshasa-gana natives. The classification is about how you process the world, not whether you're a good person.
3. Mahendra Porutham — offspring
The count between the bride's nakshatra and groom's nakshatra (modulo 27) at specific positions — 4, 7, 10, 13, 16, 19, 22, 25 — gives Mahendra. Match indicates classical good fortune for children, lineage stability, family expansion.
This porutham loses some weight in modern usage where couples may not prioritise children, but it remains meaningful for traditional family-arranged matches.
4. Sthree Dheerga Porutham — bride's prosperity
A favourable Sthree Dheerga indicates the bride will have a long, prosperous life and stable position in the husband's family. The check looks at whether the groom's nakshatra falls more than 9 nakshatras after the bride's (counted forward from hers). When yes, the porutham is matched.
Many matches today reframe this as a generic "prosperity for the couple" check, but classically it specifically tracks the bride's well-being and is a common point families care about.
5. Yoni Porutham — sexual compatibility
Each of the 27 nakshatras is associated with one of 14 yonis (animals): horse, elephant, sheep, snake, dog, cat, rat, cow, buffalo, tiger, deer, monkey, mongoose, lion. Some yoni pairs are friendly, some neutral, some hostile.
The classical pairings:
- Friendly: cow-horse, dog-monkey, etc. — natural ease
- Neutral: most other combinations — workable
- Enemy: cat-rat, dog-deer, snake-mongoose, lion-elephant, cow-tiger — significant friction
- Same yoni: usually positive, indicates strong instinctive match
This porutham is sometimes treated as just sexual compatibility, but the classical reading is broader — it's about instinctive alignment, the body-level chemistry that doesn't have words.
6. Rasi Porutham — mental and daily compatibility
A mostly positive porutham unless the two moon signs sit at specific inauspicious counts from each other (2nd-12th relationship is the classic problem). A good Rasi porutham means daily life flows easily — communication is frictionless, household decisions don't need long conversations.
Rasi porutham failure is the most common reason couples report "we love each other but day-to-day living is exhausting." Worth taking seriously.
7. Rajju Porutham — marriage longevity (the heaviest)
Of all ten poruthams, Rajju is weighted most heavily in Kerala tradition. A failed Rajju porutham is treated as one of the most serious mismatches in classical marriage analysis.
The 27 nakshatras are arranged in a vertical "rope" pattern with 5 levels:
- Pada Rajju (foot) — Ashwini, Ashlesha, Magha, Jyeshtha, Mula, Revati
- Aroha Rajju (thigh) — Bharani, Pushya, Purva Phalguni, Anuradha, Purva Ashadha, Uttara Bhadrapada
- Madhya Rajju (waist/centre) — Krittika, Punarvasu, Uttara Phalguni, Vishakha, Uttara Ashadha, Purva Bhadrapada
- Avaroha Rajju (chest) — Rohini, Ardra, Hasta, Swati, Shravana, Shatabhisha
- Sira Rajju (head) — Mrigashira, Pushya (alt placement), Chitra, Anuradha (alt), Dhanishta, Revati (alt)
If both partners are on the same rajju, Rajju porutham is generally considered failed — different parts of the rajju are interpreted as different weakness points (foot, head, etc.). If they're on different rajjus, the match is fine.
The classical concern: same-rajju matches are said to put marriage longevity at risk. Modern interpretations vary — some jyotishis treat this as a much softer signal than tradition does, others treat it as a hard veto.
8. Vedha Porutham — obstruction
Certain nakshatra pairs are considered mutually obstructive — they "block" each other's natural flow. These pairings (e.g. Ashwini-Jyeshtha, Bharani-Anuradha) need to be checked specifically.
A failed Vedha porutham doesn't predict catastrophe, but it does suggest the couple will face repeated small obstructions throughout shared projects.
9. Vasya Porutham — influence
Each rashi has a list of rashis it can naturally influence/control (vasya) and rashis it cannot. A good Vasya porutham means there's natural mutual yielding between the partners — neither has to fight to be heard.
A poor Vasya match doesn't doom anything, but it tends to produce relationships where one partner constantly feels unheard or steamrolled.
10. Graha Maitri Porutham — planetary friendship
Each rashi has a ruling planet. The two partners' rashi-lords are checked for friendship:
- Both planets natural friends (e.g. Sun and Mars) — excellent
- Mutual friends (both consider each other friends) — strong
- One-way friend — workable
- Mutual enemies (e.g. Sun and Saturn) — challenging
- Same planet — depends on the specific rashis
Graha Maitri is one of the more cosmic poruthams — it indicates whether the underlying planetary forces of the two charts get along. A strong Graha Maitri smooths over friction in other poruthams; a weak one makes other mismatches worse.
How the score is computed
Each porutham contributes points (varies by tradition — Kerala uses different weights than the Ashtakuta 36-point system). The total score gives a combined number. Above 6/10 is considered the threshold for a workable match in most lineages.
But raw scores can mislead. A 7/10 with a failed Rajju is concerning. A 5/10 with strong Yoni, Rasi, and Graha Maitri can actually work better than a higher technical score.
A real porutham analysis (whether by a jyotishi or via [AI porutham](https://www.aijathakam.com/porutham)) goes beyond the score to identify which failures matter and which don't.
Chevvai dosha overlap
Beyond the ten poruthams, the analysis also checks Chevvai (Mangal) dosha overlap:
- Both partners have it → cancels out, neutral
- Only one has it → traditional concern; intensity depends on cancellation factors in the affected partner's chart
- Neither has it → no concern
We covered Mangal dosha in detail in [a separate guide](/blog/mangal-dosha-chevvai-dosham-explained).
When to override the score
The classical jyotishis are clear: the porutham score is an input, not a verdict. Reasons to override:
- The two people have already built a strong relationship and are committed
- Family fit, financial fit, emotional maturity, shared values are all strong
- Specific failed poruthams have known cancellation factors in either chart
- The couple is older and the youth-oriented poruthams (Mahendra in particular) are less relevant
And reasons not to override even a high score:
- Either partner has serious doubts about the match
- The pressure to marry is coming from family rather than the couple
- Critical poruthams (Rajju, Yoni, Rasi) all failed
- Either chart shows strong indicators of marital difficulty independent of the match
Use the score wisely
Porutham is a tool for risk assessment, not romantic destiny. A high score doesn't guarantee a happy marriage; it suggests the technical foundation is solid. A low score doesn't doom anything; it tells you which specific dynamics will need conscious effort.
If you're checking compatibility for a marriage you're already committed to: use it to identify the 2-3 areas you'll need to work on consciously. That's its highest practical value.
If you're choosing between proposals: use it as one input among five or six. Family fit, shared values, financial trajectory, and — let's be real — whether you actually like each other, all matter at least as much as the porutham score.
Generate a complete [AI porutham analysis online](https://www.aijathakam.com/porutham) to see all ten poruthams with detailed interpretation for both partners.