Birth Chart Calculator
Calculate your Sun sign, Moon sign, rising sign, and planet positions based on your date, time, and place of birth.
Note: This calculation is based on simplified astronomical tables. For a professional birth chart interpretation, we recommend consulting an astrologer.
What is a Birth Chart?
A birth chart (natal chart or star chart) is a complete map of the sky at the exact moment and place of your birth. As the most fundamental and comprehensive tool of astrology, a birth chart shows the positions of planets relative to zodiac signs and their angles to each other. Every person's birth chart is unique because the planetary alignment in the sky is constantly changing.
Planet Meanings
In astrology, each planet represents a different area of life. The Sun represents will and self, the Moon governs emotions and inner world, Mercury symbolizes communication and thought patterns, Venus represents love and beauty, and Mars symbolizes energy and action. The outer planets -- Jupiter for luck and expansion, Saturn for discipline and responsibility, Uranus for change and innovation, Neptune for imagination and intuition, and Pluto for transformation and power dynamics.
How to Read a Birth Chart
When interpreting a birth chart, first look at the Sun, Moon, and Rising signs -- these are called the "Big Three" and form the foundation of personality. Then examine the positions of personal planets (Mercury, Venus, Mars). The aspects (angles) between planets are very important; harmonious aspects indicate ease and talent, while challenging aspects present growth opportunities.