Free Sun, Moon & Rising Sign Calculator

Your Big Three are your Sun sign, Moon sign, and Rising sign. The Sun is the identity you grow into, the one you already know from your birthday. The Moon is your inner emotional life. The Rising sign, your Ascendant, is the face the world meets first, and the angle your whole chart is built around.

Most people meet astrology through their Sun sign and never go further. That's one point in a chart with dozens. When a Capricorn insists they're nothing like the textbook Capricorn, the Moon or the Rising is usually doing the talking. The full Big Three guide goes deeper than a calculator page should; this tool just gets you the three signs fast.

You need your birth date, your birth time, and your birth place. The date alone fixes your Sun. Date and place fix your Moon. The birth time pins your Rising, because the Ascendant rolls into a new sign about every two hours.

1. Gather your birth date, time, and place. On a day the Moon or the Ascendant changed signs, the time is what decides which sign is yours.
2. Enter them above. The calculator casts a full natal chart from the same JPL ephemeris that professional astrology software is built on, and locates all three to the exact degree.
3. Read your Big Three together, with their exact degrees and your element and modality balance.

Run it anyway. Your Sun sign holds in all but the rare cusp birthday, and your Moon sign holds in almost every case, with a flag on the rare boundary day. Your Rising sign is the one placement that waits on an accurate time, because a two-hour swing can carry it into the next sign. If your time is lost, the birth time rectification tool works backward from real events to narrow it down.

The element and modality balance across the three is where it gets interesting. Say your Sun is fire and your Moon is earth: the fire wants to move fast and decisively, while the earth privately wants slow, solid ground to stand on. That gap is the kind of thing the balance read surfaces, instead of leaving you with three labels that don't seem to fit together.

The three signs are the doorway, and the rest of the chart is the room. Every planet sits in a sign and a house, and some areas of your life carry far more weight than others. The full birth chart calculator lays all of it out. For two people, the compatibility calculator reads one chart against another. For timing, the profection year calculator shows which themes are live for you this year.