Accuracy first — every position comes from DE440, NASA JPL's most precise planetary ephemeris.
Accuracy first — every position comes from DE440, NASA JPL's most precise planetary ephemeris.
Every calculator here runs on the same ephemeris, takes a birth moment or a date, and answers on the page. Nothing is gated, nothing asks for an email first, and no result waits behind a sign-up.
Kundli, Indu Lagna and Kundli Matching all start from the same three inputs — date, time and place of birth — and the place matters as much as the clock. Coordinates decide the timezone the engine reads the birth time in, so a city chosen carelessly moves the chart, not just the map. Matching needs two charts and scores them across the eight kootas, with every cancellation shown alongside the verse it rests on.
Panchang and its four windows — Rahu Kaal, Yamaganda, Gulika Kaal and Chaughadiya — answer a different question: not what a chart says, but what kind of day today is. They need a date and a city rather than a birth moment, so they work for anyone. Chandra Bala and Tara Bala sit between the two, reading the day against your birth nakshatra and moon sign.
The Nadi and Bhakoot reference pages take no input at all. They set out the classical conditions under which each dosha is cancelled, quoting the Sanskrit verse and the work it comes from, so the rules behind a matching score can be read on their own. Cancellation matters more than it sounds: a factor scored zero because an exemption applied is a different finding from one that simply failed, and a total alone cannot tell them apart.
These are calculations, not readings. They compute what the classical rules produce from a chart, and they are careful to show where the sources disagree rather than pick a side silently. Where a result has a caveat, the page states it. What none of them replaces is a practitioner reading the whole chart — a score is the start of that conversation, not a substitute for it.