Enter your birth details above and this free calculator checks your chart for Kaal Sarp Dosha. It opens with a plain verdict: present, with its type, or not present. A small table shows which planets sit in which half of the zodiac, and a reason line names any planet that keeps the chart from qualifying. Kaal Sarp Dosha describes a chart where all seven classical planets sit within one half of the zodiac, the line between Rahu and Ketu cutting the sky into two halves. The calculator tests both halves by the strict rule, and names the type where it forms.
How this calculator works
Positions are computed in your own browser by our ephemeris, using the Lahiri ayanamsa and the mean lunar node for Rahu and Ketu, read from tables calculated from NASA JPL DE440, which agree with it to within a few seconds of arc for births from 1899 to 2075 (outside those years a compact series is used, and the result says so). Your ascendant, needed to name the type when the condition forms, comes from the local sidereal time at your birth place, so an accurate birth time improves this part of the result. The time zone in force at your birth place, including daylight saving, is applied automatically. The working is done in your browser. Once your email is confirmed, the birth details you enter and the headline of the result are kept with it, so that our emails can fit your chart (see the privacy policy).
The calculator checks the Sun, Moon, Mars, Mercury, Jupiter, Venus and Saturn against both halves of the zodiac: the half that runs forward from Rahu to Ketu, and the half that runs forward from Ketu to Rahu. If all seven fall inside one half, that is Kaal Sarp, and the result says which half. If one or two planets sit in the other half, the verdict is still no Kaal Sarp, because the strict rule needs all seven; the result then adds a calm note naming those planets and saying that astrologers with a looser rule call this a partial (Ardha) Kaal Sarp and read it as mild. If three or more sit on each side, the condition does not form. Books differ on whether the Ketu-to-Rahu half counts: some count only the Rahu-to-Ketu half, many count both, and the guide on this site and this calculator count both. (An earlier version of this calculator tested only the Rahu-to-Ketu half.) Where a complete Kaal Sarp forms, it identifies which of the twelve named types it is, Anant, Kulik, Vasuki, Shankhpal, Padma, Mahapadma, Takshak, Karkotak, Shankhachud, Ghatak, Vishdhar or Sheshnag, based on which house Rahu occupies from your Lagna.
Reading your result
The first line of the result is the verdict: present (with the type) or no Kaal Sarp Dosha. Below it, a small table shows which planets sit in which half, and the reason line names any planet that keeps a chart from qualifying. Where it is complete, the named type is shown along with the house Rahu occupies. A partial reading names the specific planet or planets that break the axis, which is itself useful information: those planets are the ones classically said to soften the condition’s effect.
Where traditions differ
Kaal Sarp is not named in Brihat Parashara Hora Shastra. It is a later, disputed concept, popularised much more recently than most of what this site computes, and a number of serious astrologers do not treat it as a classical category at all, reading the same placements instead through each planet’s own house and aspect without reaching for a separate name. Where it is used, sources also differ on how strictly to apply it: some require every one of the seven planets to be inside the axis with no exception, others allow a planet very close to Rahu or Ketu’s own degree to still count as inside even if it sits just past the boundary. This calculator applies the strict version; any planet outside the half means no Kaal Sarp, with a note for the looser partial reading. The direction is a second point of difference: this calculator counts both halves, as explained above, and names which half the pattern is in.
We say this plainly because Kaal Sarp is one of the most heavily marketed conditions in popular astrology, usually with fear attached and a remedy for sale attached to the fear. That approach is the opposite of how this site treats it.
What it cannot tell you
This calculator checks one geometric condition. It does not predict events, and it makes no claim about a person’s life course from this placement alone. It also does not weigh the rest of the chart, a well-placed Jupiter or a strong Lagna, against a Kaal Sarp reading, which a fuller analysis would do. For the complete chart, see the free kundali tool. A great many ordinary, settled lives carry this placement, and it is read here as a marker of intensity, not a warning.
Each of the twelve named types has its own guide in the Kaal Sarp section.
Frequently asked questions
↳ What is Kaal Sarp Dosha?
It describes a chart where all seven classical planets, the Sun, Moon, Mars, Mercury, Jupiter, Venus and Saturn, fall within one half of the zodiac, the half from Rahu to Ketu or the half from Ketu to Rahu. It is a later addition to popular astrology rather than a condition named in Brihat Parashara Hora Shastra, and this site treats it as a disputed, minor consideration rather than a serious concern.
↳ What is the difference between complete and partial Kaal Sarp?
A complete Kaal Sarp has all seven planets inside one half of the zodiac, between Rahu and Ketu, with no exception. If one or two planets fall outside it, the strict rule is not met and the calculator says no Kaal Sarp, with a note that looser schools call it partial, Ardha Kaal Sarp, and read it as mild. If three or more sit on each side, the condition does not form at all.
↳ How many types of Kaal Sarp Dosha are there?
Twelve, named by the house Rahu occupies counted from your Lagna: Anant, Kulik, Vasuki, Shankhpal, Padma, Mahapadma, Takshak, Karkotak, Shankhachud, Ghatak, Vishdhar and Sheshnag. These names only apply when a complete Kaal Sarp actually forms.
↳ Is Kaal Sarp Dosha dangerous?
No. It is not named in Brihat Parashara Hora Shastra, it is a later and disputed concept, and this site does not treat it as a source of fear. A great many ordinary lives carry this placement. Where it is taken seriously at all, it is read as a marker of intensity or an unusual life pattern, not a warning of misfortune.
↳ Do I need my exact birth time for this calculator?
It helps, mainly because naming the specific type of a complete Kaal Sarp depends on your ascendant, which needs an accurate birth time. Whether the condition itself is present, complete, partial or absent, depends only on the seven planets and the Rahu-Ketu axis, which are less sensitive to birth time than the ascendant is.
↳ How do I check Kaal Sarp Dosha in my kundli?
Enter your birth date, time and place above. The calculator places the seven planets and the Rahu and Ketu axis, tests both halves of the zodiac by the strict rule, and opens with a plain verdict: present with its type, or not present. A table shows which planets sit in which half, so you can see the reason.
↳ How can Kaal Sarp Dosha be removed?
There is nothing that has to be removed. This site does not believe the placement calls for one. Where tradition suggests anything for Rahu and Ketu, it begins with conduct and devotion, and many families observe Nag Panchami. Be wary of anyone who sells an expensive remedy on fear.
↳ Does Kaal Sarp Dosha affect marriage?
This calculator makes no prediction about marriage. The traditional checks for a match are the gun milan score and Mangal dosha, which the kundli matching tool gives for two charts. Kaal Sarp is not one of the eight kootas, and many settled marriages have it in one or both charts.
↳ Are Kaal Sarp Yog and Kaal Sarp Dosh the same?
Yes. Kaal Sarp Yog, Kaal Sarp Dosh and Kaal Sarp Dosha are names for the same pattern, all seven planets on one side of the Rahu and Ketu axis. The calculator tests it by the strict rule and names the type where it forms.
For the full chart, including every other dosha this site tests, see the free kundali tool. If you would like to talk through your chart with someone, see consultation.