Birth Chart Calculator

The Sun sign is what most people mean when they ask 'What's your star sign?' It's determined by which zodiac sign the Sun occupied on your birthday. The Sun spends approximately 30 days in each sign over its 365-day cycle, moving from Aries (March 21) through Pisces (ending March 20) in sequence. Your Sun sign represents your core self, your conscious identity, your ego, the qualities you're working to develop, and how you express yourself in the world. It's the most fundamental layer of your astrological profile.

The 12 signs are grouped by element (Fire, Earth, Air, Water) and quality (Cardinal, Fixed, Mutable). Fire signs (Aries, Leo, Sagittarius) are energetic and passionate. Earth signs (Taurus, Virgo, Capricorn) are practical and grounded. Air signs (Gemini, Libra, Aquarius) are intellectual and social. Water signs (Cancer, Scorpio, Pisces) are intuitive and emotional. Cardinal signs initiate (Aries, Cancer, Libra, Capricorn), Fixed signs sustain (Taurus, Leo, Scorpio, Aquarius), and Mutable signs adapt (Gemini, Virgo, Sagittarius, Pisces).

Sun sign astrology — the 12 horoscope columns in newspapers and magazines — is the most accessible form of astrology but also the most simplified. Professional astrologers consider the Sun sign one layer among many in a full birth chart. Someone might be a Capricorn Sun but with a Sagittarius Moon and Leo Rising — their outward presentation, emotional nature, and core drive could be quite different from a stereotypical Capricorn. Understanding all three major placements gives a much more accurate picture than the Sun sign alone.

The Moon moves through the entire zodiac in approximately 27.3 days, spending about 2.5 days in each sign. Because it changes so frequently, the Moon sign requires your birth date (not just birth month) for a reasonable approximation, and your exact birth time and location for precision. The Moon sign represents your emotional instincts, subconscious reactions, what makes you feel safe and nurtured, your relationship to the past and family, and how you process feelings internally.

While the Sun shows who you are, the Moon shows how you feel. A person with a Scorpio Moon has intense, deep emotional responses and holds onto feelings — even with a cheerful Gemini Sun. A person with an Aquarius Moon processes emotions through detached rationality, even if their Cancer Sun makes them appear warm and nurturing. The Moon sign strongly influences your intimate relationships, how you act when under stress, and your instinctive reactions before conscious thought kicks in.

The Moon sign is particularly important in the charts of women and people who strongly identify with their feminine or receptive side, according to traditional astrology. In modern psychological astrology, the Moon rules the inner child — the part of you formed in early childhood that still influences your reactions as an adult. Understanding your Moon sign can provide insight into patterns in your emotional life, recurring relationship themes, and what environments make you feel at home.

The Rising sign (also called the Ascendant) is the zodiac sign that was rising on the eastern horizon at the moment and location of your birth. Because Earth rotates once every 24 hours and there are 12 signs, the Rising sign changes roughly every two hours — which is why an exact birth time is needed. The Rising sign represents your immediate first impression on others, your physical appearance and body language, how you approach new situations, and the mask or persona you show the world before people get to know you.

The Rising sign is often described as how others see you versus how you see yourself (Sun). Two people with the same Sun sign born on the same day but at different times can have very different Rising signs, making their personalities appear quite different on the surface. A Virgo Sun with a Sagittarius Rising may appear enthusiastic and optimistic to strangers, while a Virgo Sun with a Capricorn Rising comes across as reserved and serious — despite sharing the same core Virgo qualities.

In a full birth chart, the Rising sign also determines the order of all 12 houses — the sectors of life (money, relationships, career, spirituality, etc.). This is why two people with the same Sun and Moon signs but different Rising signs can have quite different life focuses and experiences. The 1st house always begins with the Rising sign, and the subsequent houses follow in zodiac order. Planets falling in different houses have different effects, which is why birth time is so important for precise astrological interpretation.