Cast your Chaturthamsa (D4), the fourth divisional chart of Vedic astrology, from date, time, and place of birth. The tool computes your D4 Lagna with a birth-time-confidence check, every planet’s quarter, deity, D4 sign and house, and renders the chart in North or South Indian style. Uses the sidereal Lahiri ayanamsa, the same engine as our Kundli, and the BPHS kendra rule.
100% private - the D4 calculation runs entirely in your browser. No birth data sent anywhere.
Supports 1900 onwards for better calculation reliability.
Birth time matters here: a D4 quarter is 7.5 degrees, so your D4 Lagna changes roughly every 30 minutes - faster than the ~2-hour D1 Lagna.
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astrology| Chart / harmonic | D4 (Chaturthamsa), the fourth divisional chart |
|---|---|
| Division size | 4 equal quarters of 7.5 deg per sign |
| Start-sign rule | Kendras from the sign: 1st, 4th, 7th, 10th (same for every sign) |
| Presiding deities | Sanak, Sanand, Kumar, Sanatan (BPHS Ch. 6, 9), one per quarter |
| Reachable signs | Only the 4 kendras of each planet's D1 sign |
| Classically read for | Fortunes (BPHS Ch. 7 varga-use verse); property/home = later practice |
| D4 Lagna sensitivity | ~30 min of birth time per quarter at Indian latitudes |
| Same-sign geometry | Quarter 1 always self-maps: one fourth of every sign's span |
| Nodes | Rahu/Ketu stay exactly opposite in D4 (rotation-preserving map) |
| Inputs | Date, time, and place of birth |
| Engine | Meeus VSOP87 + Lahiri ayanamsa; Rahu/Ketu = mean node (same engine as Kundli) |
| Privacy | 100% client-side; no birth data leaves your browser |
The Chaturthamsa - also spelled Chaturthamsha - is the fourth of the sixteen divisional charts (Shodasavarga) described in the Brihat Parashara Hora Shastra. Where the birth chart (D1) maps the whole life, each varga zooms into one domain, and the classical varga-use verse assigns the Chaturthamsa to fortunes.
Like every varga, the D4 is a derived chart: it takes each planet’s exact sidereal longitude from the birth chart and re-maps it. Nothing new is observed in the sky. What makes the D4 distinctive is its kendra geometry: instead of walking through consecutive signs the way the Dwadasamsa does, each quarter jumps three signs to the next angle.
Each sign is divided into four quarters of 7.5 deg. The verse rule: “The Lords of the 4 Kendras from a Rasi are the rulers of respective Chaturthahs of a Rasi” - so the first quarter maps to the sign itself, the second to the 4th sign from it, the third to the 7th, and the fourth to the 10th. The same progression applies to every sign, odd or even.
| Quarter: degrees | Maps to (kendra from the sign) | Deity |
|---|---|---|
| 0 - 7.5 deg | 1st (the sign itself) | Sanak |
| 7.5 - 15 deg | 4th from it | Sanand |
| 15 - 22.5 deg | 7th from it | Kumar |
| 22.5 - 30 deg | 10th from it | Sanatan |
Worked example: a planet at 8 deg of Aries sits in the second quarter (7.5 - 15 deg), so its D4 sign is Cancer, the 4th from Aries. Each varga in the family carries its own rule: the Navamsa keys on movable/fixed/dual, the Drekkana uses a uniform trine, the Dwadasamsa counts forward from the sign itself, the Chaturvimsamsa (D24) counts forward from a parity-selected seed, and the D4 walks the kendras.
The kendra rule means a planet’s D4 sign is always its D1 sign, or the 4th, 7th or 10th from it - never anything else. A planet in Aries can only be in Aries, Cancer, Libra or Capricorn in the D4; one in Taurus only in Taurus, Leo, Scorpio or Aquarius. The first quarter always maps the sign back to itself, so a same-sign D1/D4 placement covers exactly one fourth of each sign’s span - unremarkable arithmetic, not a distinction. And because the map preserves oppositions, Rahu and Ketu stay exactly opposite in every D4 chart. If several planets cluster in a few signs of your D4, that is the geometry at work, not a fault in the calculator.
The Brihat Parashara Hora Shastra’s varga-use verse assigns the Chaturthamsa to fortunes - that translated word is the classical anchor. Practitioners in later tradition read the D4 for property, home, land, vehicles and fixed assets; that reading is widespread, and it is a gloss on the verse’s word rather than the verse’s own wording, so this page names it as later practice. The varga refines the birth chart rather than overriding it - the same relationship the Navamsa (D9) has with marriage significations and the Dwadasamsa (D12) has with parents.
All of this is descriptive tradition, not prediction. This page does not tell you what will happen to your property or fortunes, and offers no remedies, gemstones, or rituals - the classical text pins the domain and nothing here goes beyond naming it.
The ascendant crosses one 7.5-deg quarter in roughly 30 minutes of clock time on average at Indian latitudes - faster than the D1’s roughly two hours per sign, though the most forgiving among the finer vargas. Instead of quoting only the average, this tool computes your chart’s distance to the nearest D4 Lagna boundary in minutes and says so plainly.
Planet placements have their own fragility near a quarter edge. This tool flags any planet within about 0.3 deg of one. That 0.3 deg figure is a conservative division-edge proximity heuristic we carry across our varga tools, not a certified accuracy bound and not a birth-time claim. A body that crosses a D4 edge does not nudge to a neighbouring sign - it jumps to the next kendra, three signs away (or four, across a sign boundary) - so where a flag fires the tool shows you both alternatives by name rather than asking you to work them out.
This version computes the D4 chart, houses (whole-sign from the D4 Lagna), the quarter deities, and the birth-time-confidence checks. It does not interpret the chart, it does not read houses for property outcomes, and it ships no predictions and no remedies.
The Chaturthamsa is the fourth divisional chart (varga) of Vedic astrology. Each 30-deg sign is divided into four quarters of 7.5 deg, and every planet is re-mapped to a new sign based on which quarter it occupies. The classical varga-use verse in the Brihat Parashara Hora Shastra assigns this chart to fortunes. It is read alongside the birth chart (D1), not instead of it.
By the kendra rule of Brihat Parashara Hora Shastra Ch. 6, 9: the first quarter of a sign maps to the sign itself, the second to the 4th sign from it, the third to the 7th, and the fourth to the 10th - the four kendras (angles) counted from the sign. The same rule applies to every sign; there is no odd/even fork. This tool applies it to each planet's exact sidereal longitude from the birth chart.
The Brihat Parashara Hora Shastra's varga-use verse assigns the Chaturthamsa to fortunes - that translated word is the classical claim, and it is all this page asserts. Popular practice reads the D4 for property, home, land, and fixed assets; that is a later interpretive gloss on the same chart, and we name it as such rather than presenting it as the verse's own wording.
They do not always land in exactly four, but every planet's D4 sign is always one of the four kendras counted from its D1 sign - the sign itself, the 4th, the 7th, or the 10th. A planet in Aries can only reach Aries, Cancer, Libra, or Capricorn in the D4. Across a whole chart the reachable signs depend on which D1 signs are occupied. This is a property of the kendra rule, not a bug.
The Brihat Parashara Hora Shastra names them as Sanak, Sanand, Kumar and Sanatan - the four Kumaras - one per quarter, in that order for every sign. This tool shows the deity for each planet's quarter; it does not attach any predictive meaning to them, because the classical text assigns the names without interpretation. The consulted translation prints these short forms; Kumar is Sanatkumara.
The ascendant crosses one 7.5-deg quarter in roughly 30 minutes of clock time on average - faster than the roughly two hours a D1 Lagna sign takes, though the most forgiving of the finer vargas. This tool reports how many minutes your entered time sits from the nearest D4 Lagna boundary, and flags any planet sitting within about 0.3 deg of a quarter edge.
Both - use the North Indian (diamond) / South Indian (square) toggle above the chart; both draw the same D4 (Chaturthamsa) placements. In the North Indian format the houses are fixed with the Lagna at the top and the signs rotate; in the South Indian format the signs are fixed in the grid and the ascendant is marked in its box. Pick whichever regional format is more familiar.
No. It computes the classical D4 chart and reports what traditional sources say the chart is consulted for - the varga-use verse assigns it to fortunes, and later practice reads it for property and home. It makes no predictions about your assets or your life, it does not tell you what will happen to you, and it offers no remedies, gemstones, or rituals.
This page is the canonical surface for these terms: Chaturthamsa, Chaturthamsha, and D4 chart. They all refer to the fourth divisional chart described above.