Kaal Sarp Dosha Calculator
Kaal Sarp Yoga forms when all seven grahas — Sun through Saturn — fall on one side of the Rahu–Ketu axis, leaving the other half of the zodiac empty. This tool checks your chart against the actual longitudes, names which of the twelve types it forms, and says plainly where the traditions disagree.
What this calculator works out
- Whether the yoga is formed
- Checked against real longitudes, not sign approximations.
- Which of the twelve types
- Named from the house Rahu occupies — Anant through Sheshnag.
- Partial (aanshik) detection
- Reported separately when exactly one graha breaks the hemming.
- The axis direction
- Whether the grahas fall in the Rahu-to-Ketu arc or the reverse.
How it works
Rahu and Ketu always sit exactly 180° apart, cutting the zodiac in half. The tool measures every graha's angular distance from Rahu and checks whether all seven land in the same half. If they do, the yoga is full; if exactly one falls outside, most astrologers read partial (aanshik) Kaal Sarp. The type is named from the house Rahu occupies — Anant for the 1st through Sheshnag for the 12th.
Step by step
- Rahu's sidereal longitude is taken as the reference. Ketu sits exactly 180° opposite.
- For each of the seven grahas, the angular distance forward from Rahu is measured.
- A graha between 0° and 180° from Rahu lies in one half; between 180° and 360°, the other.
- If all seven land in the same half, the yoga is formed.
- The type is read from the house Rahu occupies counted from the ascendant.
A worked example
Input: Rahu at 100°, the seven grahas spread between 110° and 270°
- Ketu sits at 100° + 180° = 280°
- Forward distance from Rahu for each graha: 10° to 170°
- All seven fall between 0° and 180° → all in the Rahu-to-Ketu arc
- The 180° to 360° half is empty of planets
Result: Kaal Sarp Yoga formed. The type depends on which house Rahu's sign is from the ascendant.
How to read your result
- The geometry is objective, the reading is not
- Whether all seven grahas sit on one side of the axis either holds or it does not — there is nothing subjective in the check. What the tradition reads into it is a separate matter, and sources vary widely in how gravely they treat it.
- The classical reading is delay, not disaster
- Texts describe results arriving later and requiring more effort, rather than not arriving. The pattern is also common enough that treating it as catastrophic is not defensible.
- Partial is genuinely milder
- When one graha sits just outside the arc, the hemming is broken. Many astrologers do not count aanshik Kaal Sarp at all, which is why this tool reports it separately instead of folding it into a yes.
What changes the answer
- Checking by sign instead of by degree misreads charts where a planet sits near a boundary. This uses longitudes.
- A fast-moving Moon near the axis can flip the result within a single day, so birth time can matter even though the nodes barely move.
- The type name depends on the ascendant, so it needs the birth time even when the yes/no does not.
- Traditional remedies here are mantra, charity and fasting — all inexpensive.
Frequently asked questions
What is Kaal Sarp Yoga?
A chart pattern where all seven classical grahas are hemmed between Rahu and Ketu, leaving one half of the zodiac empty of planets. It is a geometric condition, so it either holds or it does not — there is nothing subjective in the check itself.
How serious is it?
This is where honest sources and fearful ones part company. Classical texts read it as a pattern of delay and effort, with results arriving later and harder rather than not at all. It is also common enough that treating it as catastrophic is not defensible — and it weakens considerably when benefics are strong or Rahu is well placed.
What are the twelve types?
Anant, Kulik, Vasuki, Shankhpal, Padma, Mahapadma, Takshak, Karkotak, Shankhachooda, Ghatak, Vishdhar and Sheshnag — named in order of the house Rahu occupies from the ascendant. The type shifts which area of life the tradition reads the pattern into.
What is partial or aanshik Kaal Sarp?
When one graha sits just outside the Rahu–Ketu arc, or exactly on the axis, the hemming is broken. Most astrologers read this as a much milder version, and a good number do not count it as Kaal Sarp at all. This tool reports it separately rather than folding it into a yes.
Why do some sites say I have it and others do not?
Three reasons. Some check by sign rather than by degree, which misreads charts where a planet sits near a boundary. Some count the reverse arrangement, Ketu to Rahu, and some do not. And schools disagree about the partial case. This tool uses actual longitudes and tells you which arrangement it found.
Does Kaal Sarp depend on my birth time?
For whether the yoga is formed, usually not — the nodes and slow planets barely move in a day, though a fast Moon near the axis can flip it. For the type name, yes: that depends on the house Rahu occupies, which depends on the ascendant.
Are the expensive Kaal Sarp pujas necessary?
Traditional remedies for this pattern are mantra, charity and fasting, all of which cost little. Treat any reading that demands a large payment to avert disaster as a sales technique rather than as astrology.
Related astrology concepts
- Kaal Sarp Dosha guide — the twelve types and their classical readings
- Planetary positions — see where Rahu and Ketu actually fall
- All doshas — the other patterns worth checking