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Calculate your birth chart, compare two charts, or look up the sky on a date. Each tool lists the details you need.
New to birth charts? Start with your Sun, Moon and rising sign.
Your birth chart
Sidereal birth chart
Find Lahiri D1 positions and your Moon nakshatra, with Placidus houses and visible uncertainty.
What you needBirth date and birthplace. Exact time needed for angles and houses.
Part of Fortune calculator
Calculate the Lot of Fortune and inspect the day or night formula.
What you needBirth date, exact birth time, and birthplace.
Birth chart
Calculate planetary placements, houses and aspects from your birth details.
What you needBirth date and birthplace. Unknown time supported.
Big three
Find your Sun, Moon and rising sign, with limits for uncertain birth times.
What you needBirth date and birthplace. Exact time needed for rising sign.
Moon sign
Find the Moon placement for your birth date, time and place.
What you needBirth date and birthplace. Unknown time supported.
Rising sign
Calculate your Ascendant using an exact birth time and place.
What you needBirth date, exact birth time, and birthplace.
Chart ruler
Find your traditional Ascendant ruler and follow the planetary chains in your chart.
What you needExact birth time for the Ascendant ruler. Planetary chains support unknown time.
Lilith calculator
Find your mean Black Moon Lilith sign and check possible signs for an uncertain birth time.
What you needBirth date and birthplace. Unknown time supported.
North Node calculator
Find your true North Node sign, with possible signs when the birth time is uncertain.
What you needBirth date and birthplace. Unknown time supported.
Human Design chart
Find your Human Design type, strategy, authority and profile, with a full bodygraph.
What you needBirth date, exact birth time, and birthplace.
Midheaven calculator
Find the MC sign and degree and locate your tenth Placidus cusp.
What you needBirth date, exact birth time, and birthplace.
Sign stellium calculator
Find groups of 3 or more bodies in one sign, with possible memberships for an uncertain birth time.
What you needBirth date and birthplace. Unknown time supported.
Timing and the sky
Solar return calculator
Estimate your Sun’s return and calculate the chart for an explicit location and year.
What you needExact birth time, birthplace, return location and year.
Personal transits
Compare planetary movements over a date range with your birth chart.
What you needBirth details and a date range. Unknown birth time supported.
Sky and dates
See current planetary positions or choose a calendar date.
What you needNo birth details needed. Choose any supported date.
Moon phases and calendar
See the current phase and primary lunar dates for the next 12 months.
What you needNo birth details needed.
Two charts together
Synastry
Compare the planetary contacts between two birth charts.
What you needBirth details for both people. Unknown times supported.
Composite chart
Calculate the planetary midpoints of two birth charts.
What you needBirth details for both people. Unknown times supported.
Human Design connection
See how two bodygraphs connect: electromagnetic, companionship, compromise and dominance channels.
What you needTwo saved charts with exact birth times.
Numerology
These tools use date or name arithmetic, separate from the astrology calculations.
For calculation rules and current limits, read our methods.