Calculation before copy
Birth time is converted through the selected birthplace timezone before planetary positions, the Ascendant, houses, and aspects are calculated.
THE FREE TOOL INDEX
Astrology tools that show their work.
Start with a real chart, follow the placement that caught your attention, compare with consent, and return when the sky changes. No signup wall. No mystery score pretending to be fate.
Calculate my chartPICK THE QUESTION
One sky. Different ways in.
Focused calculators answer one question quickly. The full birth chart shows how those answers change each other.
START HEREFREE
Free birth chart
Calculate the Big Three, every planet, Whole Sign houses, major aspects, elements, modalities, chart ruler, and a shareable private receipt.
HORIZONFREE
Rising sign calculator
Find the tropical Ascendant from the exact local birth time, coordinates, and timezone—without relying on generic two-hour tables.
INNER WORLDFREE
Moon sign calculator
Calculate the Moon’s position and see honest two-sign uncertainty when an unknown birth time crosses a lunar ingress.
TWO CHARTSFREE
Astrology compatibility
Create a private Orbit Check across spark, communication, comfort, growth, and chaos—with the sign-level evidence visible.
CROSS-CHART CONTACTSFREE
Synastry guide
Understand conjunctions, sextiles, squares, trines, and oppositions between two charts without reducing a relationship to one score.
CURRENT SKYFREE
Personal transits
Return to a private chart link to see current sign-level contacts to natal placements and a practical reflection for the loudest signal.
FIELD GUIDEFREE
The 12 zodiac signs
Explore dates, rulers, elements, modalities, Sun, Moon and Rising meanings, relationships, work styles, strengths, and growth edges.
THE ASTROLOGY.AC STANDARD
Useful enough for beginners. Transparent enough for skeptics.
Unknown means unknown
When a birth time is missing, time-dependent layers are withheld and sign-change boundaries are shown instead of silently inventing noon.
Evidence stays attached
Interpretations show the placements or aspects behind them. Astrology is used as a reflective language, not disguised as certainty or science.
Private by default
Anonymous inputs are calculated without an account. Shared views omit the raw birth date, time, birthplace, age, and coordinates.