Explore your sky. Understand the method.

Choose your calculation

• Big 3 Astrology Calculator

  Find your Sun, Moon and rising signs together. Use your birth time and location for a time-specific chart, or see what can and cannot be calculated when the time is unknown.

• Free Birth Chart Calculator

  Calculate a tropical birth chart with planetary degrees, an equal-house wheel and major aspects. Read the placements alongside the method, rather than relying on a picture alone.

• Sun Sign Calculator

  Check your tropical Sun sign from the Sun's calculated position. Birth time matters on transition dates, when a fixed calendar table may give the wrong answer.

• Rising Sign Calculator

  Find the zodiac degree rising on the eastern horizon at your birth. Enter the recorded local time, its historical time zone and your birth coordinates.

• Moon Sign Calculator

  Calculate the Moon's tropical sign and degree for a birth instant. An unknown time is kept visible as uncertainty, especially when the Moon changes signs that day.

• Love & Zodiac Compatibility Calculator

  Compare two Sun signs through traditional astrological themes. Explore shared strengths and contrasting styles without an invented relationship score.

• Venus Sign Calculator

  Find Venus's tropical zodiac position for your chosen birth instant, then explore the relationship symbolism traditionally associated with that sign.

• Moon Phase at Birth Calculator

  See the Moon's phase and illuminated fraction at a birth instant. The graphic follows the calculated phase; the astronomical result is kept separate from symbolic interpretation.

• Life Path Number Calculator

  Work through a life path number from your birth date. See each reduction and how this numerology convention retains master numbers 11, 22 and 33.

• Personal Year Number Calculator

  Calculate a numerology personal year from your birth month, day and a selected calendar year. Follow the addition instead of treating the result as a forecast.

• Chinese Zodiac Calculator

  Find the traditional animal and element associated with your lunar birth year. January and February births are checked against Chinese New Year rather than assigned by Gregorian year alone.

• Mercury Retrograde Calculator

  Check apparent Mercury retrograde motion at a selected instant and see the year's station intervals. Dates come from calculated geocentric longitude, not a repeating calendar pattern.

• Saturn Return Calculator

  Estimate the first return of Saturn to its natal tropical longitude. See calculated crossings rather than a birthday plus a fixed number of years.

• Synastry Chart Calculator

  Compare two birth charts with a two-ring wheel, planetary placements and major cross-chart aspects. Keep astronomical separations separate from relationship interpretations.