🌟 Birth Chart Calculator
Generate your complete natal chart and discover your astrological blueprint
Understanding Your Birth Chart
🌞 Sun Sign
Your core identity and life purpose. Represents your ego, consciousness, and the essence of who you are.
🌙 Moon Sign
Your emotional nature and inner self. Governs your instincts, habits, and subconscious reactions.
⬆️ Rising Sign (Ascendant)
Your outward personality and first impression. How others perceive you and your approach to life.
🏠 Houses
Twelve life areas where planetary energies express. From identity to relationships to career and spirituality.
🪐 Planetary Positions
Where each planet was located at your birth. Each planet influences different aspects of your personality.
📐 Aspects
Angular relationships between planets. These create harmony or tension in your personality traits.
The Twelve Zodiac Signs
Aries
Mar 21 - Apr 19
FireTaurus
Apr 20 - May 20
EarthGemini
May 21 - Jun 20
AirCancer
Jun 21 - Jul 22
WaterLeo
Jul 23 - Aug 22
FireVirgo
Aug 23 - Sep 22
EarthLibra
Sep 23 - Oct 22
AirScorpio
Oct 23 - Nov 21
WaterSagittarius
Nov 22 - Dec 21
FireCapricorn
Dec 22 - Jan 19
EarthAquarius
Jan 20 - Feb 18
AirPisces
Feb 19 - Mar 20
WaterHow Birth Chart Calculation Works
A birth chart, also known as a natal chart, is a map of the sky at the exact moment and location of your birth. It shows the positions of the Sun, Moon, planets, and other celestial bodies in relation to the twelve houses and zodiac signs.
What You Need for Accurate Calculations
- Birth Date: The exact day, month, and year you were born
- Birth Time: The precise time (hour and minute) - affects Rising sign and house positions
- Birth Location: The city and country where you were born - affects planetary positions
- Time Zone: Automatically calculated from your birth location for accuracy
Key Chart Elements
- The Big Three: Sun, Moon, and Rising signs form your core astrological identity
- Inner Planets: Mercury, Venus, Mars affect daily life and relationships
- Outer Planets: Jupiter, Saturn, Uranus, Neptune, Pluto influence long-term patterns
- Houses 1-12: Life areas from self-image to spirituality and everything in between
Related Calculators
Frequently Asked Questions
Why do I need my exact birth time?
Your birth time determines your Rising sign (Ascendant) and the positions of houses in your chart. The Rising sign changes approximately every 2 hours, so even a small difference in time can significantly impact your chart interpretation.
What if I don't know my exact birth time?
If you don't know your birth time, you can still get valuable information from your Sun and Moon signs. However, your Rising sign and house positions will be inaccurate. Check your birth certificate, hospital records, or ask family members.
How accurate are online birth chart calculators?
Online calculators use the same astronomical data as professional astrologers. Accuracy depends on the precision of your birth information. Our calculator uses Swiss Ephemeris data for maximum accuracy.
What's the difference between tropical and sidereal astrology?
Tropical astrology (used by most Western astrologers) is based on the seasons and uses the spring equinox as 0° Aries. Sidereal astrology aligns with the actual star constellations. This calculator uses tropical astrology.
Can my birth chart change over time?
Your natal birth chart never changes - it's a snapshot of the sky at your birth moment. However, current planetary movements (transits) and progressions show how cosmic energies influence you throughout life.