D10 Dasamsa Chart Calculator
A free dasamsa (D10) chart calculator — ten parts of exactly 3 degrees per sign, counted from the sign itself in an odd sign and from the ninth sign along in an even one.
The Dasamsa, written D10 and also called the Karmamsa, cuts each 30-degree sign into ten equal parts of exactly 3 degrees. A planet's part is fixed by its longitude, and the sign that part maps to by whether the holding sign is odd-numbered or even-numbered. In an odd sign the ten run from that sign itself; in an even sign, from the ninth sign along. Classically the D10 is the varga consulted for career, profession, status and achievements.
That switch is why a dasamsa chart must be drawn, not eyeballed from the rasi: the same degree in an even sign lands eight signs — 240 degrees — further round than in an odd one. Across the twelve signs each starts from a different sign, so the D10 yields twelve distinct maps. Kundli Studio maps every graha through the ten parts from its exact astronomical longitude.
The ten dasamsas of Sagittarius
Sagittarius is the ninth sign, so it counts as odd and its ten dasamsas begin from Sagittarius itself. The placements below come from a sample chart for 1 January 1990, noon IST at Chennai — an invented date, never a real birth.
| Part | Arc within Sagittarius | Dasamsa sign |
|---|---|---|
| 1 | 0 deg - 3 deg | Sagittarius |
| 2 | 3 deg - 6 deg | Capricorn |
| 3 | 6 deg - 9 deg | Aquarius |
| 4 | 9 deg - 12 deg | Pisces |
| 5 | 12 deg - 15 deg | Aries |
| 6 | 15 deg - 18 deg | Taurus |
| 7 | 18 deg - 21 deg | Gemini |
| 8 | 21 deg - 24 deg | Cancer |
| 9 | 24 deg - 27 deg | Leo |
| 10 | 27 deg - 30 deg | Virgo |
In that chart the Sun sits at 16 degrees 51 minutes of Sagittarius, inside the sixth part, and goes to Taurus; Saturn at 21 degrees 55 minutes is in the eighth and goes to Cancer. In an even sign it would have started eight signs later.
How to read the result
The D10 fills the sixth cell when the divisional chart grid opens with its default charts, under the selector D-10_dasamsa. The Crux of Vedic Astrology puts the focus of any varga on the house under reference, and for the dasamsa on the tenth. So count ten signs on from the As badge and look at that sign's occupants: in the sample above the D10 lagna is Aries, the 10th is Capricorn, and it holds Venus in brackets, the mark of retrograde motion at birth.
The same book assigns other houses of this chart their own matters, the 4th the premises and the 9th the boss, and among the texts it reads the 2nd, 6th and 10th, the artha trikona, for the choice of profession. Narasimha Rao's textbook reads the 10th from the D10 lagna as one's true conduct in society.
Amber tags are arudha padas worked out from the D10's own placements. Narasimha Rao reads A10 in the D10 as the workplace and the 10th from AL as how that conduct is perceived; that sample puts AL in Leo and A10 in Libra. Sanjay Rath's lesson notes add a step across two cells: take the 10th lord from the Rasi cell, then find the house it occupies here. The Rasi lagna of the sample is Pisces, so the 10th lord is Jupiter, which falls in Virgo, the 6th from the D10 lagna.
Key terms
- Karmamsa
- Another name for the D10, used in Narasimha Rao's textbook, where the D10 is the chart of karma, or action in society.
- Arudha pada
- The image of a house, which Narasimha Rao calls the maya, or illusion, attached to it; the D10 cell shows all twelve as amber tags, AL, A2 to A11 and UL.
- AL (Arudha Lagna)
- The amber AL tag, the arudha of the 1st house; Narasimha Rao reads it as people's impression of a native, one's status in the material world.
- A10 (Karma Pada)
- The arudha of the 10th house; in the D10 Narasimha Rao takes it for the workplace, the place and environment where the work happens.
- 10th lord of the D1
- The lord of the Rasi chart's 10th sign; Sanjay Rath's D10 lesson tracks the house and sign it takes in the dasamsa.
- Artha trikona
- Houses 2, 6 and 10 counted from the lagna, a trine of signs four apart; in the D10 the Crux of Vedic Astrology reads it for the choice of occupation.
Ten parts of exactly 3 degrees
Each graha placed by where its longitude actually falls among the ten 3-degree arcs of its sign, from astronomical positions rather than rounded.
The odd and even rule applied per sign
Odd signs count from themselves, even signs from the ninth along — an eight-sign shift, applied per sign, that is easy to lose by hand.
Counted in the Vimsopaka weighting
The Dasamsa weighs in two strength schemes: it earns 1.5 of the twenty Vimsopaka points under Dasavarga weighting and just 0.5 under Shodasavarga weighting.
Common questions
What is the D10 chart in astrology?
The D10, or Dasamsa, is the divisional chart made by cutting each sign into ten parts of 3 degrees and re-placing every planet into the part its longitude occupies. Classically it is the varga consulted for career, profession and status.
How is the D10 chart calculated?
Divide a planet's degrees within its sign by three: the whole number, 0 to 9, gives the part (0 is the first). In an odd-numbered sign — Aries, Gemini, Leo, Libra, Sagittarius, Aquarius — count that many signs forward from the sign itself; in an even-numbered sign, from the ninth sign along. The Saptamsa uses a six-sign shift where the Dasamsa uses eight.
What is the dasamsa also called?
Dasamaamsa is the long form; the classical literature also calls it the Karmamsa and the Swargamsa. In search and software it is written D10 — dashamsha chart, dasamsa chart and D10 chart all name the same ten-part division.
Do I need my exact birth time?
Yes. One dasamsa is 3 degrees wide, and the Ascendant covers roughly that much in about twelve minutes — faster or slower with latitude and the rising sign — so a time out by fifteen minutes can move the D10 Ascendant a sign.
Why does another program show a different D10?
Programs can differ on the even-sign rule. This calculator counts as BPHS and Narasimha Rao state it: in an even sign the ten parts start from the ninth sign and run forward. The calculation engine also holds variants in which even signs run backward from the ninth, plus cyclic parivritti counts, and a program using one of them can place bodies in other signs.