Ishta Devata Calculator

An ishta devata calculator answers a question that sits at the devotional heart of Vedic astrology: of all the forms of the divine, which one is most closely tied to your own soul’s path? In the Jaimini system, the answer is not chosen by taste, family habit, or a quiz. It is read from the birth chart by a fixed chain of steps: find the Atmakaraka, the planet that has travelled furthest into its sign; find the Navamsa sign that planet occupies, called the Karakamsa; count to the 12th sign from the Karakamsa in the Navamsa chart; and read the deity from the planet found there, or from that sign’s lord when the sign is empty. This free calculator performs every step of that chain from your birth date, birth time, and timezone, using real sidereal planetary positions computed in your browser, and it shows its working so you can check each step by hand.

Two honest warnings belong right at the top, because they shape everything this page does. First, there is no classical table that maps the Karakamsa sign itself straight to a deity, even though some short summaries describe the method that way. Any page that prints such a table without explaining the 12th-sign step is inventing a shortcut the sources do not contain. This calculator does not invent one: it follows the full chain, and the sign table on this page is labelled for exactly what it is, the lord-based answer for an empty 12th sign only. Second, the sources disagree about the deity names for two indicator planets, Jupiter and Saturn. Where they disagree, this page says so openly, names the alternative readings, and flags the result, rather than picking one reading and hiding the others. A tool that claims a single certain answer on a point where the tradition itself varies would be less trustworthy, not more.

What you will get from the calculator is a spotlight result (your Atmakaraka, its sidereal position, its Navamsa sign, and your Ishta Devata), a step-by-step reading of the chain, a table of all seven planets with their sidereal positions, degrees within their signs, and Navamsa signs, a twelve-sign Navamsa occupancy grid, and the full planet-to-deity and sign-to-deity reference tables. Everything is framed as traditional lore for reflection. Nothing here predicts your future, guarantees an outcome, or replaces a teacher, a family tradition, or your own devotion.

What is Ishta Devata?

Ishta Devata means, literally, the chosen deity: the personal form of the divine that a person is most drawn to worship, and that tradition says best supports their inner life. The word ishta carries the sense of what is desired, cherished, and chosen, and devata means a divine being or deity. In practice, an Ishta Devata is the deity a person turns to in prayer, meditation, and daily practice, the form through which they relate most naturally to the divine as a whole. For some people that form comes from family tradition, called Kuladeva, the deity of the lineage. For others it comes from a teacher’s guidance, from a temple or pilgrimage experience, or from a long personal inclination that they cannot quite explain. The astrological method on this page is one more route to the same question, and it is meant to sit alongside those routes, not to overrule them.

In Jaimini astrology, the Ishta Devata has a specific technical meaning that is narrower than the everyday sense of a favourite deity. It is the deity indicated by the 12th sign from the Karakamsa in the Navamsa chart, read through the planet found there or that sign’s lord. The 12th house in Vedic astrology governs surrender, release, loss of ego, and final liberation, called moksha. Counted from the Karakamsa, which is the seat of the soul in the Navamsa chart, the 12th sign therefore shows what the soul must ultimately turn toward and let go into. That is why the deity read there is called the Ishta Devata in this technical sense: it is the form of devotion said to carry the soul toward liberation, rather than toward wealth, status, or any worldly goal. Related but distinct is the Dharma Devata, read the same way from the 9th sign from the Karakamsa, which guides righteous conduct and spiritual instruction. This calculator reports the Ishta Devata only, and it explains the 9th-sign method in the questions below so you are not left confusing the two.

It is worth pausing on what kind of claim this is. The Ishta Devata of a chart is a traditional interpretive reading, not an astronomical measurement. Astronomy can tell you, to arcminute precision, where Mars stood at your birth. It cannot tell you which deity you should worship. The bridge between the two is the Jaimini textual tradition, preserved in the Jaimini Sutras and their commentaries, and the bridge is only as strong as that tradition’s own consistency. On the core chain, the sources agree well: the Atmakaraka rule, the Karakamsa, and the 12th-sign step are stated the same way by independent modern renderings. On the final planet-to-deity names, they agree for five of the seven planets and vary for two. This page keeps those two kinds of claim visibly separate: the computed positions are arithmetic you can verify, and the deity names are lore you can weigh.

How to use this calculator

Using the calculator takes less than a minute. Enter your birth year, month, and day. Enter your birth time on the 24-hour clock, as accurately as you know it. Then choose the timezone of your birthplace from the dropdown, or choose the custom offset option and type the UTC offset that was actually in force on your birth date. Press the button, and the result appears below the form. Copy and print buttons let you save or share the result as plain text.

Birth time accuracy matters more here than in many astrology calculators, and the reason is the size of a Navamsa. Each Navamsa spans only 3 degrees 20 minutes of the zodiac. The Sun moves about 1 degree per day, so its Navamsa changes roughly every three days, and a birth time error of hours will not move it. The Moon, however, moves about 13 degrees per day, so it crosses a whole Navamsa in roughly 6 hours, and a birth time error of a few hours can move the Moon into a neighbouring Navamsa. The fast planets Mercury and Venus move at intermediate speeds. If your birth time is uncertain by several hours, treat the result as a starting point and check it against a second time within your uncertainty range: if the Atmakaraka and the Karakamsa stay the same, your result is robust; if they change, the honest answer is that the chart alone cannot settle it without a better birth time.

If you do not know your birth time at all, tick the date-only box. The calculator then computes the planets for 12:00 noon local time and labels the whole result PROVISIONAL in plain sight. Noon is the standard neutral fallback, chosen because it sits in the middle of the day and therefore minimises the maximum possible error, but it is still a guess about the time, and the page never hides that. A date-only result is useful for learning the method and for seeing which parts of the chain are stable across the day, but it should not be treated as a settled personal reading. Where the page shows a PROVISIONAL badge, read the deity as a candidate to reflect on, not as a conclusion.

A note on timezones and daylight saving: the dropdown lists standard, non-daylight offsets. If your birthplace observed daylight saving time on your birth date, the offset in force on that date is the one to use, even if it differs from the standard offset shown. For example, a summer birth in London used UTC+1:00 under British Summer Time, not the UTC+0:00 standard offset. If you are unsure, check a historical timezone record for the birthplace and date, and use the custom offset option if the dropdown does not carry the offset you need. A one-hour timezone error shifts every planet by one hour of motion, which is small for the slow planets but can matter for the Moon near a Navamsa boundary.

The calculator asks for no birthplace beyond the timezone, and no name, email, or account. Planetary Navamsa signs depend only on the instant of birth and the sidereal longitudes, not on the observer’s latitude, so no latitude is needed. What is therefore not computed is the Navamsa Lagna, the ascendant of the Navamsa chart, which does require a birthplace and a birth time. The Karakamsa method used here does not need the Lagna, so nothing is lost for this particular reading, but you should not expect this page to show a full Navamsa chart with houses. It shows planetary Navamsa signs, which is exactly what the Ishta Devata chain requires.

How it computes your Ishta Devata

The computation has five stages, and the calculator shows each one so the result is auditable rather than oracular. Stage one converts your local birth date and time to a UTC instant using your chosen offset, then computes sidereal longitudes for the seven planets Sun through Saturn. The engine is the Schlyter low-precision planetary theory: geocentric tropical longitudes from orbital elements, minus the linear Lahiri ayanamsa, which is 23.85696 degrees plus a small rate term based on the Julian Day. This is the same verified engine used across the ZodiaScope tool set, accurate to arcminute level, which is ample for Navamsa work except within arcminutes of a Navamsa boundary, where a high-precision ephemeris could disagree. The worked example below lets you cross-check the engine against an established reference value.

Stage two ranks the seven planets by the degrees each has travelled within its own sign, ignoring the sign name entirely. The planet with the largest figure is the Atmakaraka. This is the Jaimini Chara Karaka rule: the chara karakas are temporary significators that change from chart to chart, unlike fixed significators such as Jupiter for children. Only seven planets take part in this tool’s ranking, Sun through Saturn. Rahu and Ketu are excluded, which matches the traditional seven-planet school and also removes a complication: in the eight-planet school, Rahu’s degree is counted in reverse, as 30 degrees minus its degrees within the sign, because Rahu moves retrograde. That reversed rule never applies here, and the page says so, so that a reader who knows the eight-planet school is not confused by its absence. If two planets tie to the precision of this engine, the tool reports the tie openly and uses the first planet in Sun, Moon, Mars, Mercury, Jupiter, Venus, Saturn order as the working Atmakaraka, rather than silently picking one.

Stage three converts each planet’s sidereal position into its Navamsa sign. Each 30-degree sign is divided into nine equal parts of 3 degrees 20 minutes, giving 108 Navamsas across the zodiac, exactly one per nakshatra pada. The Navamsa number is the floor of the degrees within the sign divided by 3 degrees 20 minutes, plus one, so a planet at 0 to 3 degrees 20 minutes is in Navamsa 1, at 3 degrees 20 minutes to 6 degrees 40 minutes in Navamsa 2, and so on up to Navamsa 9 at 26 degrees 40 minutes to 30 degrees. Where counting starts depends on the type of the natal sign: movable signs (Aries, Cancer, Libra, Capricorn) count from the sign itself; fixed signs (Taurus, Leo, Scorpio, Aquarius) count from the 9th sign from the sign; dual signs (Gemini, Virgo, Sagittarius, Pisces) count from the 5th sign from the sign. The same rule can be stated by element, and the two statements are equivalent: fire signs count from Aries, earth signs from Capricorn, air signs from Libra, and water signs from Cancer. The calculator’s reference table lists the starting sign for every natal sign, and its worked example walks the rule twice, once for the Atmakaraka and once for an independent check case.

Stage four applies the Karakamsa chain. The Atmakaraka’s Navamsa sign becomes the Karakamsa. Counting inclusively from the Karakamsa as sign 1, the 12th sign is the Jivanmuktamsa, literally the sign of liberation of the soul. In ordinary zodiacal order this is eleven signs forward from the Karakamsa, wrapping around the zodiac as needed. The calculator then looks at which of the seven planets occupy that sign in the Navamsa chart. Stage five reads the deity: if one or more planets occupy the Jivanmuktamsa, those planets indicate the deity, and if several occupy it, tradition says the strongest decides, while this tool lists every occupant and their deity rather than pretending to rank strength it does not compute. If no planet occupies the sign, the sign’s lord indicates the deity. For the two signs with two traditional lords in some schools, Scorpio and Aquarius, this tool uses the single traditional lord, Mars and Saturn respectively, and discloses that some schools use the stronger of the two co-lords instead, which could change an empty-sign result.

The final planet-to-deity mapping is where the page is most careful, because it is where the sources diverge. The implemented primary names follow Vedic Astro Bot’s Karakamsa page, cross-checked against Jagannath Hora’s Atmakaraka guide and a third rendering of the same teaching. Sun points to Shiva, also named as Rama. Moon points to Parvati, also named as Gauri, Lalita, and Saraswati, with Jagannath Hora also naming Durga and Krishna. Mars points to Hanuman, also named as Kartikeya, Narasimha, and Rudra. Mercury points to Vishnu, also named as Narayana and Buddha. Venus points to Lakshmi, also named as Parvati. For Jupiter, Vedic Astro Bot names Vishnu first, with Hayagriva, Parameshwara, and Dattatreya, while Jagannath Hora names Brahma and Dakshinamurti first. For Saturn, Vedic Astro Bot names Vishnu and Brahma, while Jagannath Hora names Shiva, Bhairava, and Kali, and the third rendering names Hanuman, Shiva, Vishnu, and Krishna. The calculator therefore shows Vishnu first for Jupiter and Saturn, lists every alternative, and carries a SOURCES VARY flag on those results. A Saturn result, where the sources disagree most sharply, is the least settled of the seven, and the page says so in those words.

Worked example

The calculator preloads a worked example so you can see the whole chain with numbers you can verify by hand: birth on 24 August 1995, at 14:30 local time, timezone UTC+5:30. Local 14:30 minus 5 hours 30 minutes gives 09:00 UTC. The day number for that instant, counted from 2000 January 0.0 UT in the Schlyter system, is minus 1589.625, the Julian Day is 2449953.875, and the linear Lahiri ayanamsa is 23.79610427 degrees. Subtracting that ayanamsa from the tropical longitudes gives the sidereal longitudes below, which match the established reference values from the D60 build for the same instant, including the Moon’s sidereal longitude of 105.8181 degrees. If you run the preloaded example and get different numbers, something has gone wrong, and the page’s numbers, not your memory of them, should be checked first.

Step one, the sidereal positions and degrees within each sign: Sun in Leo at 6.9493 degrees into the sign; Moon in Cancer at 15.8181 degrees; Mars in Virgo at 27.1447 degrees; Mercury in Leo at 29.6369 degrees; Jupiter in Scorpio at 12.4309 degrees; Venus in Leo at 7.8805 degrees; Saturn in Aquarius at 29.1026 degrees. Step two, the Atmakaraka ranking, largest first: Mercury 29.6369, Saturn 29.1026, Mars 27.1447, Moon 15.8181, Jupiter 12.4309, Venus 7.8805, Sun 6.9493. Mercury is the Atmakaraka by a margin of 0.5343 degrees over Saturn, a clear win, not a tie and not a boundary case. Readers sometimes expect the Moon, the fastest planet, to dominate such rankings, but speed is irrelevant here: only the degrees within the sign count, and a slow planet that has nearly completed its sign will beat a fast planet that has just entered one.

Step three, Mercury’s Navamsa. Mercury sits at 29.6369 degrees into Leo. Dividing by 3 degrees 20 minutes (3.3333 degrees) gives 8.891, whose floor is 8, plus one gives Navamsa 9, the last division of the sign, spanning 26 degrees 40 minutes to 30 degrees. Leo is a fixed sign, so counting starts from the 9th sign from Leo, which is Aries: count Leo as 1, Virgo 2, Libra 3, Scorpio 4, Sagittarius 5, Capricorn 6, Aquarius 7, Pisces 8, Aries 9. Counting nine signs forward from Aries gives Aries 1, Taurus 2, Gemini 3, Cancer 4, Leo 5, Virgo 6, Libra 7, Scorpio 8, Sagittarius 9. Mercury’s Navamsa sign is therefore Sagittarius, and the Karakamsa is Sagittarius. As an independent check of the counting rule, take the Moon at 15.8181 degrees into Cancer: Navamsa number is the floor of 15.8181 divided by 3.3333, plus one, which is 5, spanning 13 degrees 20 minutes to 16 degrees 40 minutes. Cancer is movable, so counting starts from Cancer itself, and the 5th sign from Cancer is Scorpio. The Moon’s Navamsa sign is Scorpio, which matters for the next step.

Step four, the 12th sign from the Karakamsa Sagittarius: count Sagittarius 1, Capricorn 2, Aquarius 3, Pisces 4, Aries 5, Taurus 6, Gemini 7, Cancer 8, Leo 9, Virgo 10, Libra 11, Scorpio 12. The Jivanmuktamsa is Scorpio. Step five, who occupies Scorpio in the Navamsa chart? The full Navamsa placements for the example are: Sun in Gemini, Moon in Scorpio, Mars in Virgo, Mercury in Sagittarius, Jupiter in Libra, Venus in Gemini, Saturn in Gemini. Only the Moon sits in Scorpio, so the indicator planet is the Moon, by occupation, not by lordship. Step six, the Moon’s deity: the primary name implemented here is Parvati, also named as Gauri, Lalita, and Saraswati, with Durga and Krishna named in Jagannath Hora’s rendering. The worked example’s answer is therefore Parvati, with those alternatives listed, and because the Moon’s names vary only in the alternatives and not in the leading name, this particular result carries no SOURCES VARY flag. The calculator preloads exactly this example, so you can follow every number above in the live result before entering your own details.

For completeness, here are the remaining Navamsa placements in the example with their arithmetic, so that no row is left as an assertion. Sun at 6.9493 degrees into Leo: Navamsa number is the floor of 6.9493 divided by 3.3333, plus one, which is 3; Leo counts from Aries, and the 3rd sign from Aries is Gemini. Mars at 27.1447 degrees into Virgo: Navamsa number is 9; Virgo is dual, so counting starts from the 5th sign from Virgo, Capricorn, and the 9th sign from Capricorn is Virgo. Jupiter at 12.4309 degrees into Scorpio: Navamsa number is 4; Scorpio is fixed, so counting starts from the 9th sign from Scorpio, Cancer, and the 4th sign from Cancer is Libra. Venus at 7.8805 degrees into Leo: Navamsa number is 3; from Aries, the 3rd sign is Gemini. Saturn at 29.1026 degrees into Aquarius: Navamsa number is 9; Aquarius is fixed, so counting starts from the 9th sign from Aquarius, Libra, and the 9th sign from Libra is Gemini. Every row of the example has now been derived twice, once by the engine and once by hand, with zero deviation.

How to read your result

Read the spotlight first, then the chain, then the tables. The spotlight names your Ishta Devata, your Atmakaraka with its sidereal position and Navamsa sign, your Karakamsa, your Jivanmuktamsa, and whether the deity was indicated by an occupying planet or by a sign lord. If a SOURCES VARY flag appears, read the alternatives in the tables before settling on any single name: for a Jupiter or Saturn indicator, the honest reading is a shortlist of candidate forms, not a single certain deity, and a teacher or a family tradition may be a better tie-breaker than this page. If a tie note appears, the Atmakaraka itself is uncertain at this engine’s precision, and a high-precision ephemeris check is the right next step, not a stronger claim from this page.

The per-planet table is the audit trail. Check that the degrees within each sign look plausible for the birth date, that the planet with the largest figure is indeed marked as the Atmakaraka, and that its Navamsa sign matches the Karakamsa in the spotlight. If you know your chart from another source, compare sidereal longitudes first: a systematic difference of roughly 24 degrees usually means the other source used tropical rather than sidereal longitudes, and a difference of about a degree for the Moon usually means a different birth time or a different ayanamsa. Small differences of a few arcminutes are expected between low-precision and ephemeris-grade engines and only matter near a Navamsa boundary. The occupancy grid then shows the whole Navamsa picture at a glance: which signs hold planets, which are empty, and whether your Jivanmuktamsa held one planet, several, or none.

How should the deity name itself be read? Traditionally, as a focus for devotion and reflection, not as a horoscope prediction. A Moon-indicated Parvati does not predict that events of a certain kind will happen, and a Mars-indicated Hanuman does not guarantee protection. The traditional reading is gentler and more practical: this is the form through which devotion is said to come most naturally to this soul, and therefore the form worth exploring first in prayer, study, or temple practice, while keeping the rest of one’s practice intact. If the indicated deity is already central to your family tradition, the chart reading confirms what you live already. If it is unfamiliar, treat it as an invitation to learn, not as an instruction to abandon existing practice. If it conflicts with a teacher’s guidance, the teacher’s knowledge of you outweighs a calculator’s knowledge of your birth instant, and this page would say so even at the cost of its own authority.

Two reading errors are common and worth naming. The first is treating the Atmakaraka planet as the deity: Mercury as Atmakaraka does not make Mercury, or Vishnu as Mercury’s deity, the Ishta Devata. The deity comes from the 12th sign’s occupant or lord, which in the worked example is the Moon, giving Parvati, even though Mercury is the soul-significator. The second is treating the Karakamsa sign as the deity: Sagittarius as Karakamsa does not itself name a deity. Only the 12th sign from it, Scorpio, and the planet in it, the Moon, name the deity. Any reading that skips from the Karakamsa sign straight to a deity name has skipped the step that does the actual work, and this page’s tables are arranged to make that skip visible rather than easy.

Deity table

The calculator displays two reference tables, and this section explains both so the page remains usable even if you read it without running the tool. The first table maps each indicator planet to its deity, primary name first, with alternative names and variance notes. Sun: Shiva, also Rama. Moon: Parvati, also Gauri, Lalita, and Saraswati, with Durga and Krishna in Jagannath Hora’s rendering. Mars: Hanuman, also Kartikeya, Narasimha, and Rudra. Mercury: Vishnu, also Narayana and Buddha. Jupiter: Vishnu, also Hayagriva, Parameshwara, and Dattatreya, with Brahma and Dakshinamurti named first by Jagannath Hora. Venus: Lakshmi, also Parvati. Saturn: Vishnu, also Brahma, with Shiva, Bhairava, and Kali named by Jagannath Hora and Hanuman, Shiva, Vishnu, and Krishna named in a third rendering. Parvati and Gauri are two names of the same goddess, not two different deities, and the same is true of Kartikeya and Skanda, and of several other paired names in the list. Where a name looks unfamiliar, it is usually a form or epithet of a familiar deity rather than an entirely separate figure.

The second table maps each sign, when it is the Jivanmuktamsa and holds no planet, through its lord to a deity. Aries and Scorpio, ruled by Mars, point to Hanuman. Taurus and Libra, ruled by Venus, point to Lakshmi. Gemini and Virgo, ruled by Mercury, point to Vishnu. Cancer, ruled by the Moon, points to Parvati. Leo, ruled by the Sun, points to Shiva. Sagittarius and Pisces, ruled by Jupiter, point to Vishnu, with the Jupiter variance note attached. Capricorn and Aquarius, ruled by Saturn, point to Vishnu, with the Saturn variance note attached. Remember the scope limit printed above this table in the tool: it applies only when the 12th sign is empty. When a planet sits in the 12th sign, the planet’s deity replaces the lord’s deity entirely, and consulting this table for that case would give the wrong answer. Scorpio and Aquarius carry the additional note that some schools use the stronger of two co-lords, Mars with Ketu for Scorpio and Saturn with Rahu for Aquarius, which this tool does not implement because it excludes the nodes.

A word on why the same planet can point to several deities, and why that is not a defect in the tradition. Hindu devotion has always held that the divine takes many forms, and that different texts, regions, and lineages emphasise different forms for the same planetary energy. Vishnu appears for Mercury, Jupiter, and Saturn in this table not because the table is careless, but because preservation, wisdom, and endurance are all faces of the same preserving principle in different contexts. Likewise, Shiva appears for the Sun and, in some renderings, for Saturn, because transformation and time are related themes. A shortlist of forms for one planet is therefore best read as a family of related devotions, with the primary name as the usual starting point, rather than as a contradiction that must be resolved by discarding all but one name.

What this calculator does not do

This calculator does not give a full birth chart, a Navamsa chart with houses, dasha timings, yogas, or compatibility readings. It does not compute the Navamsa Lagna, because it collects no birthplace latitude. It does not rank the strength of planets occupying the 12th sign, so when several planets occupy that sign it lists them all instead of crowning one. It does not use Rahu or Ketu as Atmakaraka candidates or as deity indicators, so a reader of the eight-planet school may get a different Atmakaraka from this tool when Rahu holds the highest reversed degree in their chart, and the page discloses that difference rather than burying it. It does not resolve the Jupiter and Saturn deity variance, and it does not invent a Karakamsa-sign-to-deity table to make the method look simpler than it is.

It also does not predict, prescribe, or guarantee anything about your life. No deity result on this page should be used to make medical, financial, marital, or career decisions, and no result should override professional advice, family counsel, or a teacher’s guidance. The low-precision engine is accurate to arcminute level, which is fine for most Navamsa placements but not ephemeris grade, and a planet within arcminutes of a Navamsa boundary, or a birth time uncertain by hours, can change the Navamsa sign and therefore the whole chain. Date-only results are labelled provisional for exactly this reason. Finally, the deity interpretations are traditional lore, offered for reflection and for learning the Jaimini method, not as claims about what will happen or what you must do. If you want a personal reading that weighs the whole chart, including dignity, aspects, dashas, and your own circumstances, that is work for an experienced astrologer, and this free tool is best used as preparation for that conversation, not as a substitute for it.

Related tools

• Atmakaraka calculator: find your soul-significator planet, the highest-degree Jaimini chara karaka, which is the first step of the Ishta Devata chain on this page.
• Darakaraka calculator: find the lowest-degree chara karaka, the other end of the same seven-planet ranking that produces your Atmakaraka.
• D60 chart calculator: map the same sidereal planets into the sixty Shashtiamsha divisions, a finer divisional lens built on the same verified engine.

About the author

This Ishta Devata calculator was built by Saba for ZodiaScope. Saba builds astronomy-accurate astrology tools alongside traditional interpretations: the planetary longitudes on this page are computed with a standard planetary theory minus the Lahiri ayanamsa, the Navamsa signs follow the movable, fixed, and dual counting rule by exact 3 degree 20 minute arithmetic, and the Karakamsa chain and planet-to-deity names are verified against two independent published renderings with disagreements disclosed, while the deity meanings follow traditional Jyotish teachings. Interpretations are offered for reflection and entertainment.

Published: October 25, 2026. Last updated: October 25, 2026.

Frequently asked questions

What is an Ishta Devata?

An Ishta Devata is the chosen deity, the personal form of the divine most closely tied to a soul’s path. In the technical Jaimini sense used by this calculator, it is the deity indicated by the 12th sign from the Karakamsa in the Navamsa chart, read through the planet found there or that sign’s lord. It is a focus for devotion and reflection, not a prediction.

How does this calculator find my Ishta Devata?

It computes your sidereal planetary positions, ranks Sun through Saturn by degrees within their signs to find the Atmakaraka, takes that planet’s Navamsa sign as the Karakamsa, counts to the 12th sign from it, and reads the deity from the planet occupying that sign or, when the sign is empty, from its lord. Every step is shown in the result so you can verify it by hand.

What is the Atmakaraka?

The Atmakaraka is the planet that has travelled furthest into its sign among Sun through Saturn in the birth chart. It is the first of the Jaimini chara karakas, the temporary significators that change from chart to chart, and it represents the soul’s primary theme in this life. This tool uses the seven-planet school, so Rahu and Ketu are not candidates.

What is the Karakamsa?

The Karakamsa is the Navamsa sign occupied by the Atmakaraka. It acts as a functional ascendant for the soul’s purpose: houses counted from it describe talents, teachers, and liberation, and the 12th sign from it gives the Ishta Devata. The Karakamsa is a sign, not a planet, and it must not be confused with the Atmakaraka planet itself.

Why does the calculator not map my Karakamsa sign straight to a deity?

Because no classical source contains such a table. The classical route runs from the Karakamsa sign to the 12th sign from it, then to the planet in that sign or its lord, and only then to a deity. A direct Karakamsa-sign-to-deity table would be an invented shortcut. This tool follows the full chain and labels its sign table as the empty-sign lord case only.

Why do sources disagree about Jupiter and Saturn as Ishta Devatas?

Because different texts, lineages, and modern renderings emphasise different forms for the same planetary energy. For Jupiter, one source names Vishnu first and another names Brahma and Dakshinamurti first. For Saturn, the disagreement is sharper, with Vishnu and Brahma in one source and Shiva, Bhairava, and Kali in another. This tool shows the first source’s primary name, lists every alternative, and flags the result.

What happens if no planet sits in the 12th sign from my Karakamsa?

Then the sign’s lord indicates the deity. For example, if the 12th sign is Taurus, its lord Venus points to Lakshmi, and if it is Leo, its lord the Sun points to Shiva. This tool uses the single traditional lord for every sign, including Mars for Scorpio and Saturn for Aquarius, and notes that some schools use the stronger of two co-lords for those two signs instead.

How accurate is this calculator, and what if I do not know my birth time?

The planetary engine is accurate to arcminute level, which is ample for Navamsa work except within arcminutes of a Navamsa boundary. If you do not know your birth time, use date-only mode: the planets are computed for 12:00 noon local time and the result is labelled provisional, because a Navamsa spans only 3 degrees 20 minutes and the Moon crosses one in roughly 6 hours. For a settled reading, use the most accurate birth time you have.