Your birth chart — also called your natal chart — is a circular diagram showing the position of the sun, moon, and all major planets at the exact moment and location of your birth. It is divided into 12 zodiac signs and 12 houses, with lines connecting planets that have meaningful relationships (aspects) with each other.
No two birth charts are identical. Even twins born minutes apart will have slightly different charts. Your chart is a precise cosmic snapshot unique to you — which is why it is so useful for self-understanding.
What You Need to Calculate Your Birth Chart
- Your birth date (day, month, year)
- Your exact birth time — as precise as possible, ideally from your birth certificate
- Your birth location (city and country)
The birth time is critical for accurate house placements and your rising sign. If you do not know it, you can request your birth records from the hospital where you were born, or check your birth certificate. Some people use a noon chart as an approximation when time is unknown.
yap generates your full birth chart instantly and gives you daily personalized insights based on your unique placements.
get your birth chart in yap ↓The Big Three: Sun, Moon, and Rising
When people ask "what's your sign?" they are asking about your sun sign. But the sun is only one of three core placements that define your astrological personality. Together, the sun, moon, and rising form the foundation of who you are.
Sun Sign
Your conscious identity and core self. How you express yourself and what energizes you. Determined by your birth date.
Moon Sign
Your emotional interior, instincts, and private needs. How you feel and process experience. Determined by birth date and year.
Rising Sign
Your outward personality, physical appearance, and first impression. The lens through which you experience life. Requires exact birth time.
A Scorpio sun with a Pisces moon and Gemini rising will present very differently from a Scorpio sun with a Capricorn moon and Scorpio rising — even though both share the same sun sign. This is why knowing only your sun sign tells you a fraction of your full astrological story.
The 10 Planets and What They Mean
Astrology uses 10 "planets" (including the sun and moon, which are technically luminaries). Each governs a different domain of experience:
- Sun: Identity, ego, vitality, life force
- Moon: Emotions, instincts, the subconscious, mother
- Mercury: Communication, thinking, learning, movement
- Venus: Love, beauty, values, attraction, pleasure
- Mars: Drive, ambition, desire, aggression, action
- Jupiter: Expansion, luck, wisdom, growth, optimism
- Saturn: Structure, discipline, limits, karma, time
- Uranus: Revolution, sudden change, originality, freedom
- Neptune: Dreams, illusion, spirituality, the unconscious
- Pluto: Transformation, power, death and rebirth, the shadow
The sign a planet occupies describes how that planet expresses itself. A Mars in Capricorn expresses drive methodically and patiently. A Mars in Aries expresses it directly and urgently. The house a planet sits in shows which area of life it plays out in.
The 12 Houses
The 12 houses are sectors of the chart that each govern a specific area of life. They are determined by your birth time and location, which is why exact birth time matters:
Aspects: How Planets Talk to Each Other
Aspects are angular relationships between planets in your chart. They describe the dynamic between two planetary energies — whether they work harmoniously, create tension, or blend in a complex way:
- Conjunction (0°): Planets merge their energies. Powerful and intensifying.
- Sextile (60°): Easy, supportive relationship. Opportunity and flow.
- Square (90°): Friction and tension. Creates challenges that drive growth.
- Trine (120°): Harmony and ease. Natural talents and gifts.
- Opposition (180°): Polarity and pull between two forces. Often plays out through relationships.
⭐ yap generates your complete birth chart and delivers daily personalized insights based on your exact natal placements — including transits that affect your chart right now.
Your birth chart is the most personalized astrological tool available. yap makes it accessible and useful every single day.
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