Free Natal Chart Calculator — Birth Chart with Interpretation
Natal Chart — Your Astrological Blueprint
A natal chart (birth chart, cosmogram) is a map of the sky at the exact moment of your birth. It serves as the foundation of your individual horoscope, reflecting your personality, talents, life purpose and potential.
Each planet in the natal chart represents a different facet of your being: the Sun governs consciousness and will, the Moon rules emotions and the subconscious, Mercury oversees thinking and communication, Venus relates to love and values, and Mars drives energy and action.
How to Use the Natal Chart Calculator
To build an accurate natal chart, three parameters are required: date of birth, time of birth, and place of birth. The birth time determines house positions — the key areas of life. If you do not know your exact birth time, check the corresponding box and the calculator will generate a solar chart without houses.
The Placidus House System
Our calculator uses the Placidus house system — the most widely used and precise system in Western astrology. It is based on trigonometric division of semi-arcs and accounts for the geographic latitude of the birthplace, ensuring an individualized house grid for each person.
What a Natal Chart Reveals
- Planets in signs — your innate qualities and personality traits
- Planets in houses — the life areas where these qualities manifest
- Aspects between planets — the interplay of different facets of your personality
- Ascendant (ASC) — your rising sign, shaping your outward impression and self-expression