Free astrology calculator

Free birth chart calculator

Enter your date, time and place of birth. We calculate the positions of the Sun, Moon and planets astronomically and draw your chart: Harmonia Natalis.

Your birth details

We calculate the position of the stars at the moment and place of your birth.

Name (optional, shown on the drawing)

Date of birthTime of birth

I don't know my birth time (the Ascendant will be less reliable)

Place of birthCountry

Without an email subscription we store nothing on our server. Your browser remembers what you enter only in this tab, so you do not have to enter it again; it disappears when you close the tab.

How it works

A birth chart, or natal chart, is a map of the sky at the moment and place you were born: where the Sun, Moon and planets stood in the zodiac, and which signs were rising and culminating. The positions are calculated with astronomical precision (JPL DE440 ephemeris), using the historical time zone of your birthplace, including daylight saving time as it was then.

The Ascendant and the houses depend on your exact birth time, so they are less reliable when you only know it roughly. If you don't know the time, we calculate the chart for 12:00 and mark what is uncertain. The interpretation of a chart follows the Western astrological tradition.

The positions of the Sun, Moon and planets are calculated with astronomical precision for your moment and place of birth. The interpretation follows the Western astrological tradition: a centuries-old way of looking at the sky, not a scientific prediction.