All Dosha Calculator in Horoscope Free Tamil
Use this premium free Tamil-friendly dosha calculator to check major traditional horoscope indicators like Sevvai Dosham, Sade Sati or Shani influence, Kala Sarpa tendency, Pitru Dosha signal, and Nadi category from your birth details and chart positions.
Your results will appear here
Enter your details and click the calculate button to see a rule-based traditional dosha summary with chart visualization.
Expert Guide to Using an All Dosha Calculator in Horoscope Free Tamil
If you are searching for an all dosha calculator in horoscope free Tamil, you are usually looking for a fast way to understand whether your birth chart shows classic concerns like Sevvai Dosham (Mangal Dosha), Kala Sarpa Dosham, Sade Sati or Shani effects, and Pitru Dosha. Tamil astrology users often want a simple online tool that gives a quick first-level reading before they consult an astrologer for a complete jathagam analysis. This page is designed for exactly that purpose.
What this calculator does
This calculator is a traditional rule-based estimator. It does not claim to replace a full horoscope prepared by an experienced astrologer, but it helps you identify some of the most commonly discussed dosha conditions. In Tamil astrology, people often ask questions such as: “Do I have Sevvai Dosham?”, “Is this the period of Ezharai Sani?”, “Does my chart show Kala Sarpa influence?”, or “What is my Nadi category for future marriage matching?” This tool organizes those checks into one place.
The reason this type of calculator is useful is simple: many dosha discussions online are scattered, incomplete, or written in very technical language. A modern user needs a clean system that accepts basic chart positions and then explains the meaning in plain language. That is why the interface above uses simple dropdowns for house and sign positions, plus a Nakshatra selector and chart output.
Major doshas covered in this calculator
- Sevvai Dosham / Mangal Dosha: Commonly checked from Lagna and Moon. Traditional trigger houses are 1, 2, 4, 7, 8, and 12.
- Sade Sati / Shani influence: Checked by seeing whether Saturn is in the 12th, 1st, or 2nd sign from the Moon sign. Additional cautionary positions like 4th and 8th are also monitored here.
- Kala Sarpa tendency: Usually discussed when all planets are hemmed between Rahu and Ketu and the Rahu-Ketu axis is opposite by house placement.
- Pitru Dosha signal: Often linked in traditional practice to affliction involving ancestral houses or the Sun with nodes.
- Nadi category: Important mainly for marriage compatibility rather than an independent dosha in a single chart.
How Sevvai Dosham is usually checked
One of the most frequently searched topics in Tamil horoscope reading is Sevvai Dosham. This is tied to the position of Mars in the horoscope. In many South Indian traditions, Mars in the 1st, 2nd, 4th, 7th, 8th, or 12th house from Lagna or Moon is treated as a dosha trigger. Some astrologers also check from Venus, and some apply cancellation rules. That is why a quick online calculator should be seen as a first screen, not a final verdict.
In practical terms, this dosha is discussed most often in the context of marriage timing, temperament, domestic peace, and relationship compatibility. However, the final interpretation depends on dignity of Mars, aspects from Jupiter, house ownership, sign strength, and whether both partners carry similar Mars influences.
How Shani or Sade Sati is evaluated
Tamil astrology users also search heavily for Ezharai Sani or Sade Sati status. Traditionally, this refers to the period when Saturn transits the sign before the Moon sign, the Moon sign itself, and the sign after it. In simple mathematical terms, that covers three signs out of the twelve-sign zodiac. This means a quick screening tool can identify whether you are in the opening phase, peak phase, or closing phase of Sade Sati.
This calculator also notes other difficult Saturn placements often discussed in practice, especially Ardha Ashtama Shani and Ashtama Shani. These are not identical to Sade Sati, but they are important enough that many users expect them to be shown in a modern dosha calculator. A good reading should always separate these clearly instead of mixing them into one vague warning.
Kala Sarpa Dosha: why online checks can be confusing
Among all popular doshas, Kala Sarpa Dosha is one of the most misunderstood. The general public often hears that if Rahu and Ketu are in a chart, then Kala Sarpa is present. That is not the standard rule. Traditional checking usually asks whether all planets are placed within the Rahu-Ketu axis. Even then, different schools classify many subtypes and cancellations.
That is why this calculator asks a direct confirmation question about whether all planets lie within the axis and whether Rahu and Ketu are opposite by house placement. This avoids the false-positive problem seen in many low-quality astrology websites. If the axis is incomplete or the opposite-house rule is broken, the result is reduced or flagged as inconclusive rather than blindly marked as full Kala Sarpa.
Pitru Dosha and ancestral patterns
Pitru Dosha is another area where people need careful explanation. In popular belief, it is associated with ancestral karma, delayed family blessings, repeated obstacles, or issues connected to lineage. In chart analysis, astrologers often examine the Sun, the 9th house, and nodal afflictions. Since there is no single one-line rule accepted by every school, this calculator treats Pitru Dosha as a strong indicator flag rather than as a final diagnosis.
This is the right way to use a free tool. A calculator can highlight the possibility, but a full reading must examine benefic aspects, dasha periods, divisional charts, and broader family karmic themes before making strong conclusions.
Why Nakshatra and Nadi are included
Nakshatra is central to Tamil horoscope traditions. Once you know the birth star, you can identify the Nadi group: Adi, Madhya, or Antya. Nadi is mostly used in marriage compatibility, not as a standalone dosha in individual chart reading. Still, many users searching for an all-in-one horoscope dosha calculator expect to see Nadi because it matters later in matchmaking.
Each of the 27 Nakshatras belongs to one of the three Nadi groups. This distribution is very clean mathematically, which makes it ideal for a calculator.
| Rule or Category | Total Possible Positions | Trigger Positions | Share of Total | Why It Matters |
|---|---|---|---|---|
| Sevvai Dosham from one reference point | 12 houses | 6 houses | 50.0% | Mars in 1, 2, 4, 7, 8, 12 is commonly watched |
| Sade Sati | 12 signs | 3 signs | 25.0% | Saturn in 12th, 1st, or 2nd from Moon sign |
| Ardha Ashtama Shani | 12 signs | 1 sign | 8.3% | Saturn in 4th from Moon |
| Ashtama Shani | 12 signs | 1 sign | 8.3% | Saturn in 8th from Moon |
| Nadi category | 27 Nakshatras | 9 per Nadi | 33.3% each | Used mainly for marriage compatibility |
Nadi distribution table
The following distribution is factual and based on the standard 27 Nakshatra classification system. This makes Nadi one of the easiest traditional modules to encode correctly in an online horoscope calculator.
| Nadi Group | Number of Nakshatras | Percentage of 27 Nakshatras | Example Nakshatras |
|---|---|---|---|
| Adi Nadi | 9 | 33.3% | Ashwini, Ardra, Punarvasu, Uttara Phalguni, Hasta |
| Madhya Nadi | 9 | 33.3% | Bharani, Mrigashira, Pushya, Purva Phalguni, Chitra |
| Antya Nadi | 9 | 33.3% | Krittika, Rohini, Ashlesha, Magha, Swati |
How to use this all dosha calculator properly
- Enter your birth date, birth time, and place for your own record keeping.
- Select your Moon sign correctly. This is essential for Shani or Sade Sati checking.
- Choose the house of Mars from Lagna and from Moon to evaluate Sevvai Dosham.
- Choose Rahu and Ketu houses and confirm whether all planets lie within the nodal axis.
- Select your Nakshatra to identify Nadi classification.
- If your chart shows strong ancestral affliction signs, enable the Pitru Dosha indicator.
- Click calculate and review the score chart and explanation blocks.
For best accuracy, use values from a properly cast sidereal chart prepared with the correct birth time and location. Even small time differences can shift Lagna and house positions, which changes Mars-house evaluation and therefore Sevvai Dosham status.
Why correct birth time matters
A serious horoscope calculator should remind users that chart quality depends on accurate astronomical timing. If birth time is wrong, house cusps and Lagna can shift, producing incorrect dosha results. For users who want to understand why exact time standards matter, see the National Institute of Standards and Technology time services. For general educational astronomy about planetary motion and sky calculations, visit NASA Solar System Exploration and the University of Nebraska astronomy resources at astro.unl.edu.
These sources do not validate astrology as a science, but they are highly useful for understanding why precise planetary and time data are critical inputs whenever any horoscope software is used.
Common mistakes people make when checking doshas online
- Using tropical instead of sidereal chart data without realizing the difference.
- Entering Moon sign incorrectly and then getting a wrong Sade Sati result.
- Confusing Rahu-Ketu presence with full Kala Sarpa Dosha.
- Assuming Sevvai Dosham means marriage failure without checking cancellation factors.
- Treating Nadi as a personal curse instead of a compatibility parameter.
- Ignoring the role of benefic aspects, yogas, dasha periods, and overall chart strength.
What your result should mean in real life
If the calculator shows a strong dosha score, do not panic. In traditional astrology, dosha does not work in isolation. A chart may show a classical trigger and still produce stable marriage, good finances, or smooth career progress because of strong Jupiter influence, supportive dashas, or beneficial house ownership. Likewise, a chart with only mild dosha markers may still go through difficult periods due to transit timing. The intelligent way to use a free calculator is as a screening tool, not as a final life prediction.
This is especially true for Tamil marriage matching. Many families focus heavily on one dosham, but experienced astrologers review multiple layers: porutham, dosha balance between partners, dasha overlap, longevity, family karma, and child-related houses. A balanced view is always better than a fear-based reading.
Frequently asked questions
Is this all dosha calculator free?
Yes. It is a free rule-based horoscope dosha calculator designed for Tamil users and anyone who wants a quick, readable summary.
Can I use it for marriage matching?
Partly. It identifies Mars, Shani, Kala Sarpa, Pitru signals, and Nadi category. Full marriage matching requires both charts and additional compatibility checks.
Does Sevvai Dosham always cause problems?
No. Cancellation rules, benefic aspects, and matched partner charts can reduce or neutralize the effect.
Does Nadi mean I have a dosha?
Not by itself. Nadi is mainly a compatibility factor in matchmaking.
Can this replace an astrologer?
No. A complete jathagam reading still needs expert interpretation.
Final takeaway
An all dosha calculator in horoscope free Tamil is most valuable when it is clear, honest, and structured. It should not scare users with exaggerated claims, and it should not oversimplify complex chart patterns. A high-quality calculator should explain the traditional rule being used, present the result visually, and remind users that complete interpretation depends on the whole chart.
The tool above does exactly that. Use it to screen major dosha indicators, understand your Nakshatra-based Nadi category, and get a quick visual summary before moving to deeper consultation if needed.