Astrology Tools

Explore our collection of free online tools in this category.

Natal Chart

Enter your birth date, time and city. Historical time offsets are applied automatically to calculate the Sun, Moon and Ascendant and show their saved interpretations.

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Ascendant Calculator

Calculate your ascendant from your birth date, time and city and explore its description, traits and advice.

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Moon Sign Calculator

Free moon sign calculator. Discover your lunar sign and its emotional influence on your personality.

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Sun Sign Calculator

Free sun sign calculator. Discover your zodiac sign and its core influence on your personality and life.

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Zodiac compatibility

Compare two signs in love, friendship and work. Explore symbolic affinity, examples and questions for conversation. Free, with no registration.

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Lunar calendar

Check Moon phases, illumination and upcoming new and full Moons. Browse the months and choose your time zone. Free, with no registration.

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Biorhythm Calculator

The chart represents symbolic cycles of 23, 28 and 33 days from birth.

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Relationship synastry

Compare two birth charts: affinities, communication and points of friction between their planets.

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Your personal transits

See which planets activate your birth chart and their approximate active periods.

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Your solar return

Calculate the Sun’s return to its birth position and explore the themes of your new annual cycle.

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Composite Relationship Chart

A chart for the bond you create together: its tone, support and tensions.

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Planetary Hours

The Sun’s rhythm in your location, divided among seven traditional planets.

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Your Astrology World Map

Explore your birth’s planetary lines and their correspondences near a city.

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Retrograde Calendar

See which planets are retrograde and the dates of each change throughout the year.

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Lunar Return

The Moon’s next return to its natal position: a chart for your new lunar cycle.

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Secondary Progressions

One day for each year of life. Explore the symbolic movement of your Sun, Moon and personal planets.

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Your Year’s Theme · Profections

Explore your ages and the house, sign and ruler of each birthday-to-birthday period.

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Eclipses in Your Chart

Explore solar and lunar eclipses and their contacts with your birth chart.

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Compare Dates with Astrology

Compare two to five moments for a meeting, presentation or creative project.

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The Chart of Your Question

Ask about a relationship, a job application or a professional project. Explore its horary chart.

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Your Saturn Return

Explore your return dates, repeated crossings and the theme of this astrological stage.

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Your draconic chart

Compare your tropical positions with those measured from the north lunar node. Explore each planet and discover what changes and what stays the same.

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The sky at your birth

Explore the stars and planets above your birth horizon. Rotate the map, explore its constellations and download a keepsake of that moment.

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The Wheel of the Year

Explore eight celebrations of the seasonal cycle. Choose a year and hemisphere, check their dates and find a symbolic gesture for each stage.

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Your Human Design

Explore your type, profile and network of centers, gates and channels. A symbolic map calculated from your birth, with clear explanations of each part.

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Your Life Chapters · Zodiacal Releasing

Explore a timeline of chapters and subchapters from the Lot of Spirit. View their dates and symbolic themes for projects and life direction.

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Your Vedic chapters · Dashas

Explore your planetary periods, current subperiod and next transition.

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The Venus rose · Your eight-year cycle

Discover the pattern Venus traces around Earth and explore its meetings with the Sun.

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Your Navamsa chart · The D9 map

Explore your Vedic divisional chart beside the sidereal birth chart.

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Fixed stars in your birth chart

Discover zodiacal contacts between selected stars and your natal planets. Explore a clear map, exact distances and their symbolic reading.

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Astrology is a symbolic language that maps the positions of celestial bodies—planets, the Moon, the Sun—to patterns of human experience and natural cycles. Its origins trace back to 3rd-millennium BCE Mesopotamia, where Babylonian priests correlated planetary movements with earthly events. The system was later refined by Hellenistic astronomers who added the zodiac framework, house systems, and planetary aspects. Ptolemy's Tetrabiblos (2nd century CE) codified astrological theory for Western tradition. Modern astrology combines this ancient symbolic framework with psychological interpretation, particularly influenced by Carl Jung's concepts of synchronicity and archetypes. Unlike astronomy, which studies celestial bodies as physical objects, astrology studies them as symbolic references for understanding human personality and life patterns.

Frequently Asked Questions

Is astrology scientifically proven?
Astrology is not recognized as a scientific discipline by the mainstream scientific community. Its predictive claims have not been validated under controlled conditions. However, astrology remains valuable as a symbolic and psychological tool. Many people find the archetypal framework helpful for self-reflection, understanding relationship dynamics, and timing major life decisions. Treat astrology as a reflective system, not a predictive science.
How accurate is an online natal chart?
Online natal charts are mathematically accurate when you provide correct birth data (date, time, location). The interpretation quality depends on the astrological system used. Our tools calculate positions using standard ephemeris data. For the most precise ascendant and house placements, exact birth time is essential—even a few minutes' difference can shift the rising sign.
What is the difference between Western and Vedic astrology?
Western astrology uses the tropical zodiac, aligned with the seasons (Aries begins at the spring equinox). Vedic astrology uses the sidereal zodiac, aligned with actual constellation positions. The difference is approximately 24 degrees, meaning your Vedic sun sign may differ from your Western one. Vedic astrology emphasizes predictive techniques and karma; Western astrology focuses more on psychological interpretation and personal development.
What happens during Mercury retrograde?
Mercury retrograde is an optical illusion that occurs 3-4 times per year when Earth's orbit causes Mercury to appear to move backward in the sky. In astrological tradition, this period is associated with miscommunication, technology failures, and the need to revisit unfinished matters. Practically, it's a good time for review, revision, and reflection rather than launching new projects. The effect lasts about 3 weeks including the apparent forward motion before and after.

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