Tell us three things

We’ll compute the rest.

Your natal chart is built from three inputs — when, where, and (if you know it) the exact hour you arrived. Everything else is math.

01Who

Your name (for the chart’s caption)

02When

Birth date

Birth time (optional — rises become approximate)

Birth time is the most important detail in astrology — it sets your Rising sign and all 12 house cusps. If you don’t have it, leave blank; we’ll default to noon and Rising will shift through the day.

03Where

Exact birth location

Pick the exact place. “Nearest big city” shifts your chart — at the town/village level, house cusps can move by a full sign.

Advanced · house system & zodiac

House system

Placidus is the modern default. Whole Sign is closer to Hellenistic and Vedic convention.

Zodiac

Tropical for Western. Sidereal uses the Lahiri ayanamsa for Vedic readings.

Your birth data is yours.We compute the chart on the fly — your date, time, and location aren’t sold, shared, or used to train any model. Saving requires an account; everything else is local to this session.

Computed at arcsecond precision from first-principles ephemeris — the same math professional astrologers’ software uses. For reflection and entertainment; not medical, legal, or financial advice.

Computing the sky…

Tell us three things

We’ll compute the rest.

Your natal chart is built from three inputs — when, where, and (if you know it) the exact hour you arrived. Everything else is math.

01Who

Your name (for the chart’s caption)

02When

Birth date

Birth time (optional — rises become approximate)

03Where

Exact birth location

Pick the exact place. “Nearest big city” shifts your chart — at the town/village level, house cusps can move by a full sign.

Advanced · house system & zodiac

House system

Placidus is the modern default. Whole Sign is closer to Hellenistic and Vedic convention.

Zodiac

Tropical for Western. Sidereal uses the Lahiri ayanamsa for Vedic readings.

Computed at arcsecond precision from first-principles ephemeris — the same math professional astrologers’ software uses. For reflection and entertainment; not medical, legal, or financial advice.

Your natal chart, computed precisely.

We’ll compute the rest.

Your natal chart, computed precisely.

We’ll compute the rest.