Free natal chart calculator

Your natal chart is a unique cosmic fingerprint — a snapshot of the sky at the precise moment of your birth. Enter your birth details below to learn your Sun sign, Moon sign, Ascendant and the position of every planet in your chart.

Swiss Ephemeris accuracy Instant results Free, no sign-up Any birthplace in the world

Enter birth data

If unknown, leave blank — noon will be used.
Placidus is recommended as the universal standard. At latitudes above ~66°, Whole Sign is used automatically.

What is a natal chart?

A natal chart, also called a birth chart or horoscope, is an astronomical snapshot of the sky based on the exact date, time and place of your birth. Astrologers use this chart to understand personality traits, emotional patterns, strengths, challenges and life themes.

Your chart includes the positions of the Sun (your core identity), the Moon (your emotional nature) and the Ascendant (how others perceive you), as well as Mercury, Venus, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto across the twelve zodiac signs and houses.

How we calculate your chart

Our calculator uses the Swiss Ephemeris library for astronomical accuracy. We apply the Placidus house system (the most common in Western astrology) and support all major aspects: conjunctions, oppositions, trines, squares and sextiles.

Natal chart FAQ

You need your date of birth, time of birth and city of birth. The more precise the time of birth, the more accurate the Ascendant (rising sign) and house positions will be.

You can still build a chart. We use noon as the default time. Planet positions in signs will be accurate, but the Ascendant, Midheaven and house positions may be imprecise.

We use the Placidus house system by default — the most common in modern Western astrology. Support for other systems (Whole Sign, Koch, Equal House) is available in premium reports.

Yes. Chart calculation, planet positions, houses, aspects and basic interpretations are free. Premium reports with detailed analysis of each placement are available as a paid upgrade.

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Disclaimer: For entertainment and self-reflection only. Not a substitute for professional advice.