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Pratyantar Dasha Calculator

A Pratyantar Dasha Calculator helps calculate pratyantar dasha calculator using Vedic astrology, panchang, calendar, muhurat, Vastu or naming inputs. It gives an instant browser-based result with a transparent method and source notes. Use it for planning and learning, then verify important ritual or marriage decisions with a qualified practitioner.

Last updated: June 2026 · Free · No sign-up required

Results

Enter values above and click Calculate to see your result instantly.

Quick reference

Level	Typical length	Use
Mahadasha	6–20 years	Life chapter
Antardasha (bhukti)	months–3 years	Yearly theme
Pratyantardasha	weeks–months	Month-scale timing
Sookshma	days–weeks	Fine timing (rarely used)
Prana	hours–days	Ritual/horary timing only

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For ceremonies, marriage matching and legal decisions, verify with a qualified practitioner and your regional panchang.

Interpretation guide

Combination	Reading approach
MD/AD lords friendly & strong	Smooth, productive stretch
MD/AD lords mutually hostile	Friction between life themes — plan buffers
Pratyantar of a yogakaraka	Short favourable window inside any antardasha
All three lords connected to one house	That house’s events ripen now
Changeover months	Transitions cluster near period boundaries

Formula & methodology

Formula: Pratyantar length = mahadasha years × (AD lord years/120) × (PD lord years/120), sequence rotating from the AD lord

Enter birth date, time and place.
The Vimshottari timeline is built from your janma nakshatra and balance.
The running mahadasha is split into nine antardashas, and the running antardasha into nine pratyantardashas — same order and proportions.
The three current lords and their exact date windows are returned.

Worked example — 1 Jan 1990, 06:00, Delhi, on 10 Jun 2026: Saturn / Saturn / Mercury — Saturn mahadasha (2025–2044), Saturn antardasha (Nov 2025–Nov 2028), Mercury pratyantar running 5 May – 8 Oct 2026.

Authoritative source: Hindu astrology reference

Frequently asked questions

What is a pratyantardasha?

The third level of Vimshottari: each mahadasha contains nine antardashas, and each antardasha contains nine pratyantardashas — sub-periods of weeks to a few months that practitioners use to time events within a year.

How are the lengths computed?

Proportionally, twice over: an antardasha is the mahadasha’s length scaled by the sub-lord’s share of 120; a pratyantar scales the antardasha the same way. Saturn MD (19y) × Saturn AD share (19/120) ≈ 3.0y; within it the Mercury PD is 3.0 × 17/120 ≈ 5.1 months.

What does a Saturn/Saturn/Mercury stack mean?

The mahadasha and antardasha lord coinciding (Saturn/Saturn) concentrates Saturn’s themes — structure, duty, slow building. A Mercury pratyantar inside it inflects those months toward paperwork, contracts, study and commerce. The actual verdict still comes from those planets’ condition in your chart.

How precise can third-level timing be?

Only as precise as the birth time: an hour’s error moves all dasha dates by roughly three weeks, which is the size of a pratyantar. With a well-recorded time the windows are meaningful; with a rounded time, read pratyantars as soft-edged months.

Is there a fourth level?

Yes — sookshma (days–weeks) and prana (hours–days) follow the same nesting. They demand near-exact birth times and are used for horary-grade work; for life planning, the mahadasha/antardasha/pratyantar triple shown here is the practical resolution.

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Built and maintained by the CalcaTools editorial team and checked against the methodology cited above. This tool runs entirely in your browser — the values you enter are never uploaded, stored, or shared.

Source: Hindu astrology reference

Reviewed: June 2026