Astrological Calculators
Professional astrological calculations based on Swiss Ephemeris — precise positions of planets, houses, and aspects. Select a calculator and get the result instantly.
Ascendant
Calculate your Ascendant sign: it shapes the first impression and outward behavior
Birth chart
Full natal chart online: planets, houses, aspects and interpretation
Moon Sign
Find out your Moon sign: it determines emotions, intuition and reactions
Synastry
Compare two natal charts and find out relationship compatibility
Davison Map
Relationship chart for the midpoint date and point between partners' births
Solar
Solar Return chart shows the main themes of the year from the birthday
Lunar
Lunar return chart: forecast for the current lunar cycle
Progressions
Secondary progressions show inner maturation year by year
Astrocartography
Planetary lines on the world map: where you will feel more at ease living and working
Planetary Hours
Hours ruled by the seven planets for choosing the time of actions
Moon without course
Periods when it is better not to start important affairs
Harmonics
Harmonic charts bring out hidden talents
Arabic Parts
Part of Fortune and other lots of the Hellenistic tradition
Fixed stars
Conjunction of planets with Regulus, Spica, Aldebaran and other stars
Matrix of Fate
Numerology matrix will reveal potential, talents, and karmic tasks
Tarot online
Free 3-card spread with interpretation
Human Design
Type, strategy and internal authority by date, time and place of birth
Mercury retrograde
Dates of Mercury retrograde and advice for this period
What data is required for the calculation?
For most charts, the date, exact time, and place of birth are required. Time is critical where the Ascendant and houses are involved: Ascendant, solar return, lunar return, astro*cartography, and progressions. The Moon sign, Destiny Matrix, and Tarot spread can be obtained without it.
How accurate are these calculations?
Planetary positions are calculated using the Swiss Ephemeris, the same ephemerides used by professional astrological software. The astronomical data error is minimal, so the result matches what a professional astrologer would produce in paid software.
What if the birth time is unknown?
Choose calculators that do not depend on it: the Moon sign will give a correct result in most cases, the Destiny Matrix and Tarot do not require time at all. For charts with houses, the exact time can be restored through rectification, which an astrologer does based on life events.
Is registration required?
No, all calculators work without an account and are free of charge. Birth data is used only for the calculation at the time of the request.