Lagna Calculator (Vedic Ascendant)

Lagna calculator by date and time of birth

This free lagna calculator finds your lagna — the Vedic ascendant, the rashi that was rising on the eastern horizon when you were born — from your date, time and place of birth. It uses the sidereal zodiac with the Lahiri (Chitrapaksha) ayanamsa, the standard of Indian almanacs, and also gives the lagna lord (lagnesh), the nakshatra and pada of the lagna degree, the navamsa lagna and, for comparison, the Western tropical rising sign.

Below the result is the lagna table for the birth date at the birthplace — the list of all twelve lagnas with their start and end times that panchangs print every day. It is also the answer when the birth time is not known exactly: find the hours that fit and read off the possible lagnas. Rashi names can be shown in Hindi, Tamil, Telugu, Kannada, Malayalam, Bengali, Gujarati or Marathi. The lagna is a tradition; this page is for tradition and entertainment, not prediction or advice.

How to use the Lagna Calculator

1. Enter the Date of birth and Time of birth (24-hour clock). Tick Birth time unknown if you only know the date.
2. Choose the Birth place (Indian cities are listed first) or type the Latitude and Longitude; the Time zone fills in. For old records in local time, set Clock used to local mean time or a fixed offset.
3. Pick the language for Rashi names in — for example Tamil to see Mesham, Rishabam, Mithunam.
4. Read the lagna, its lord and its nakshatra in the panel, and the details below it.
5. Check the Lagna table for the day: the highlighted row is the lagna at your birth time. Press Copy as text to share.

Lagna Calculator features

Lagna names in Hindi, Tamil and Telugu

Lagnas are named after the twelve rashis. The table gives the Sanskrit name used in most panchangs, the English sign, the Hindi, Tamil and Telugu names, and the ruling planet that becomes the lagna lord.

How the lagna is calculated

The birth time is converted to Universal Time using the browser’s time-zone database, which knows India’s historical offsets, or local mean time. Local sidereal time and the latitude give the ecliptic degree on the eastern horizon — the tropical ascendant. Subtracting the ayanamsa (about 23°10′ in 1950 and 24°13′ in 2025) turns it into the sidereal lagna. Its rashi is the lagna, the planet ruling that rashi is the lagna lord, and the 13°20′ nakshatra and 3°20′ pada follow from the same degree. The lagna moves about one degree every four minutes, so each rashi rises for roughly 1½ to 2¾ hours depending on the sign and the latitude.

An automatic test compares the lagna of two published charts (Narendra Modi and Swami Vivekananda on AstroSage, within 0.1°) and the Drik Panchang lagna tables for New Delhi on 15 August 2025 and 1 November 2024 (within 2 minutes), checked October 2026.

Lagna, rashi and rising sign — what is the difference?

The lagna is the rising sign in the sidereal zodiac; the rashi is the Moon’s sign, which many people in India call their sign — find it with the rashi calculator. The Western rising sign uses the tropical zodiac and is usually one sign later, so the Sun, Moon and rising sign calculator may show a different sign for the same birth. For a full chart with all nine grahas, houses and dasha, use the kundli generator.