Free Birth Chart Calculator — Discover Your Sun, Moon & Rising Signs

A birth chart is a snapshot of the sky at the exact moment and location you were born. It maps the positions of the Sun, Moon, and all the planets in the 12 zodiac signs. Astrologers interpret these placements to understand personality, patterns, and life themes. Your chart is as unique as your fingerprint — even twins born minutes apart can have different Rising signs.

Birth time is only required for the Rising sign (Ascendant). The Rising sign changes every ~2 hours, so even an approximate time of day (morning, afternoon, evening) narrows it down significantly. Your Sun sign and Moon sign are calculated from your birth date — no time needed. Check your birth certificate for the exact time if you want a precise Rising sign.

Your Moon sign often describes your inner emotional world more accurately than your Sun sign. It governs your instinctive reactions, emotional needs, and what makes you feel secure. Many people find their Moon sign resonates more deeply with their private self than the outward Sun sign personality. The Moon moves through all 12 signs every 29.5 days — approximately every 2.5 days in each sign — so you need your exact birth date to calculate it accurately.

Your Sun sign is fixed — it's the sign the Sun was in when you were born. Horoscopes (daily, weekly, monthly) describe how current planetary movements interact with your birth chart positions. A newspaper horoscope based on your Sun sign alone is a very rough approximation. Personalized horoscopes from AstralPath use your actual birth chart as the reference point, giving much more specific and accurate readings.

Sun sign calculations are highly accurate based on the astronomical position of the Sun at your birth date. Moon sign calculations are accurate to within one sign for most dates. Rising sign calculations use your birth time and city coordinates and are a strong approximation — for the highest precision (to the exact degree), use the full AstralPath app which uses a complete astronomical ephemeris. For the vast majority of users, this calculator gives the correct placements.

No — your natal chart is permanent. It reflects a single moment in time: the moment of your birth. What changes is how current planetary movements (transits) interact with your fixed natal chart. This is what personalized daily horoscopes, predictive astrology, and solar return charts are based on. The natal chart itself never changes.

A full birth chart includes the positions of all 10 major planets (including Mercury, Venus, Mars, Jupiter, Saturn, Uranus, Neptune, Pluto, and the Sun and Moon), plus the 12 houses of the chart, the Midheaven (career and public life), the North and South Nodes (karmic direction), and the major aspects (geometric angles between planets). AstralPath Pro gives you the complete picture with AI-powered interpretation of how all these elements work together in your unique chart.