What is a birth chart?
A birth chart is a precise picture of the sky at the moment you were born. It places the Sun, Moon, planets, and sensitive points within the 12 zodiac signs and 12 astrological houses. Together, these layers describe temperament, emotional patterns, relationships, motivation, and the areas of life that receive the most emphasis.
How to read your chart
- Planets describe what is acting: identity, emotions, communication, love, drive, growth, and responsibility.
- Signs describe how each planet expresses itself.
- Houses show where in life that energy is most active, from identity and money to relationships and career.
- Aspects show how planets cooperate, intensify one another, or create productive tension.
The calculator gives you the complete placement data. Create a free account for personal interpretations and AI analysis.
Why birth time matters
Your rising sign and houses depend on the local horizon at the moment of birth and can change quickly. If you do not know your exact time, Vivida can still calculate most planetary signs using noon, but the rising sign and house placements should be treated as uncertain.
After the chart: your changing sky
Your natal chart stays fixed, while the planets keep moving. Those current movements are called transits. Explore the daily horoscope to see how today's sky changes the tone around each zodiac sign.
Frequently asked questions
What is a natal chart?
A natal chart, or birth chart, maps the sky at the exact moment you were born. It shows each planet's zodiac sign, house, and major connections to other planets.
Is the birth chart calculator free?
Yes. Enter your birth date, time, and city to calculate your placements for free without registering. A free account unlocks personal interpretations and AI insights.
Do I need my exact birth time?
Most planetary signs can be calculated without an exact time. Your rising sign and the 12 houses change throughout the day, so an accurate birth time makes those parts much more reliable.
What information do I need?
You need your birth date, birth time if known, and birth city. Vivida automatically resolves the city's coordinates and historical time zone.