YOUR SKY ATLAS · YOUR PLACE IN THE COSMOS
The sky youcame into.
The story you make.
Birth Chart Calculator
Calculate your planetary placements, Rising sign, houses, and major aspects from your birth details.
How to Use This Calculator
- Select the birth date and enter the local time from a reliable record. Choose the unknown-time option if needed.
- Search for the birthplace and select the matching city, region, and country.
- Select “Calculate Birth Chart.” Review the calculated details before reading the interpretation.
Understanding Your Birth Chart
A birth chart maps the tropical zodiac at your birthplace and birth time. The Sun, Moon, and planets describe different astrological themes; houses organize those themes by area of life. Exact birth time matters especially for the Rising sign and house cusps.
Frequently Asked Questions
What if I don’t know my birth time?
Choose the unknown-time option. We check each placement across your local birth date, list possible signs when needed, and omit houses and angles. The wheel uses a clearly labeled noon reference.
Which house system should I use?
Placidus is the default. Whole Sign and Equal are available in Advanced settings. At polar latitudes, Placidus may be undefined; choose another system explicitly if that happens.
Calculation Method and Limitations
All tools share local Swiss Ephemeris calculations, tropical zodiac, and historical IANA time-zone conversion. Unknown times limit the precision of degrees, houses, angles, and aspects. Read the full method and limitations or review Source & License.