Devashaa — Vedic Birth Chart (Jyotiṣa)

Devashaa is a free, non-commercial, educational sidereal Vedic astrology (Jyotiṣa) birth-chart calculator and reference. From a birth date, time and place it computes an astronomical horoscope using the Swiss Ephemeris (JPL DE431), following the classical Sanskrit text Bṛhat Parāśara Horā Śāstra (BPHS) with scholarly citations. It uses the sidereal zodiac with the Lahiri ayanāṁśa and whole-sign bhāvas.

What it computes

The lagna (ascendant), the rāśi (D1) chart, and all sixteen divisional charts (ṣoḍaśavarga) — navāṁśa, daśāṁśa and the rest.
The nine grahas with their degrees, dignities and graha dṛṣṭi (aspects).
The twenty-seven nakṣatras with their pādas.
Eight nakṣatra daśā systems (Viṁśottarī and the udu daśās), plus the Jaimini Chara Daśā, a sign-based daśā.

Reference material

Alongside the calculator, Devashaa is a reference on the twelve rāśis and the twenty-seven nakṣatras — their attributes (symbol, gaṇa, yoni, puruṣārtha, śakti and more), each labelled by provenance — and the classical interaction techniques, attributed to their sources.

Approach

Every rule is traced to its source and tiered by provenance — what Bṛhat Parāśara Horā Śāstra states, versus the wider traditional canon, versus modern authors — and the tiers are never conflated; where a text is silent, the site says so rather than guessing. Planetary positions come from the Swiss Ephemeris.

This is a general-audience educational and reference resource. It has no advertising, no gambling, no adult content and no payments; an optional encrypted profile-save is the only account feature. The interactive chart calculator itself requires JavaScript.