Free Birth Chart Calculator
Enter your birth details to generate a complete natal chart with planet placements, house positions, aspects, and chart summary.
What is a natal birth chart?
A natal birth chart (also called a natal chart or birth chart) is a map of the sky at the exact moment you were born. It shows the positions of the Sun, Moon, and planets in the zodiac signs and houses, revealing the cosmic blueprint of your personality, strengths, challenges, and life path.
Our calculator uses NASA's ANISE toolkit for astronomical accuracy and supports Placidus, Whole Sign, Equal, Koch, Regiomontanus, Campanus, Porphyry, and Morinus house systems. Each planet placement includes sign, degree, house, and dignity information.
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Frequently Asked Questions
What is a natal birth chart?
A natal birth chart is a map of the sky at the exact moment and location of your birth. It plots the positions of the Sun, Moon, and planets across the 12 zodiac signs and 12 houses, creating a unique cosmic blueprint of your personality, life themes, and potential.
How accurate is the birth chart calculator?
Our calculator uses NASA's ANISE (Astro Navigation and Instrument Support Environment) toolkit for astronomical calculations, providing arc-second precision. Planetary positions are accurate to fractions of a degree, matching professional-grade ephemeris software.
What house systems are supported?
We support Placidus (default), Whole Sign, Equal, Koch, Regiomontanus, Campanus, Porphyry, and Morinus house systems. Each system divides the sky differently, and you can experiment to see which resonates most with your practice.
Do I need my exact birth time?
An exact birth time gives the most accurate chart, especially for house placements and the Ascendant. Without it, planet sign positions are still accurate. You can select your confidence level when entering birth data, and our built-in rectification tool can help narrow down your time.