Lagna calculator (Vedic Ascendant and rising sign)

Choose your birthplace and enter your birth date and time to get your Ascendant, Midheaven and Lagna. Cities apply their historical UTC offset, including daylight saving time. No signup; nothing is sent.

Launch prices until Nov 15, 2026, 23:59 JST: Standard 2,980 JPY → 2,235 JPY / Premium 5,980 JPY → 4,485 JPY

A city sets latitude, longitude and its historical UTC offset including DST. For manual entry, choose the offset in effect at birth. Nothing is sent.

What the paid PDF report includes

Standard ¥2,235 (about US$14) · launch price until Nov 15, 23:59 JST (regular ¥2,980, about US$19)

  • One analysis of your birth chart in both Western astrology and Jyotish
  • Results on screen plus 4 PDFs: Guide, Western report, Jyotish report and the Five Paths sheet

Premium ¥4,485 (about US$28) · launch price until Nov 15, 23:59 JST (regular ¥5,980, about US$38)

  • One analysis in both systems, with the first-pass analysis (L1) and the integrated interpretation (L2) kept as separate layers
  • Results on screen plus 6 PDFs: Guide, Western L1, Western L2, Jyotish L1, Jyotish L2 and the Five Paths sheet

One-time purchase for one analysis; no subscription. The PDFs are emailed to you when the analysis is complete. Prices are charged in Japanese yen (JPY). US$ amounts are approximate, based on the ECB reference rate on Nov 10, 2026; your card issuer converts at its own rate.

Start Standard or Premium ↗Compare plans and pricing →See a sample report →

For your whole chart, use GenesisCore

This tool shows one part of the chart. GenesisCore starts with a free analysis and reads character, strengths, work and timing in both Western astrology and Jyotish.

Start GenesisCore (free) ↗Is astrology science? Join the experiment ↗

What the Lagna (Ascendant) is and why it matters

The Lagna is the zodiac sign rising on the eastern horizon at the moment and place of birth. In Jyotish it becomes the first house, and the other eleven houses (bhavas) follow in order, so the Lagna decides which areas of life each planet affects. In Western astrology the same point is called the Ascendant or rising sign.

The rising sign changes about every two hours, faster or slower depending on the sign and your latitude, so an accurate birth time and birthplace matter more here than in any other basic calculation. This calculator gives the Western Ascendant and Midheaven (MC) and the sidereal Lagna (Lahiri) side by side, using the historical time zone of the chosen city or a latitude and longitude you enter.

How it is calculated

The Ascendant and MC are computed from apparent sidereal time and true obliquity using the open-source Astronomy Engine (MIT). The Lagna subtracts the Lahiri ayanamsa. Time zones use your browser's built-in IANA history.

What is the Ascendant?The 12 housesThe Midheaven and your callingWhy birth time matters

FAQ

How do I calculate my Lagna?
Choose your birthplace (or enter latitude and longitude), then your birth date and time. The calculator works out the rising degree from local sidereal time and subtracts the Lahiri ayanamsa to give the Vedic Lagna.
Is the Lagna the same as the rising sign?
It is the same point on the horizon. The Western rising sign uses the tropical zodiac and the Lagna uses the sidereal zodiac, so the sign can differ by one.
What if I don't know my exact birth time?
The Lagna can change sign within minutes if you were born near a sign boundary. Try a few times across the range you think is possible; if the sign stays the same, you can rely on it.
Does it handle daylight saving time?
Yes. Built-in cities use their historical UTC offset for the birth date, including daylight saving time. If you enter coordinates, choose the UTC offset that applied at your birth.
Is my birth data stored?
No. Everything is calculated in your browser and nothing is sent.

More free tools

Lagna Calculator | Free Vedic Ascendant and Rising Sign Calculator