Your Big Three, in ten seconds.
Three fields, three placements. The Sun is who you are, the Moon is how you feel, and the Rising sign is how people first read you. Each comes with its exact degree, computed here in your browser.
After the three
The Big Three are a summary, not the chart. The full calculator adds every planet, the twelve houses, and the aspects between them, and it explains what each placement means. The button under your result carries your details across so you do not type them twice. If you only know the date, start with the moon sign calculator; if you want a second person's chart, compatibility reads two charts together.
Questions
What are the Big Three?
Your Sun, Moon, and Rising signs: the sign the Sun occupied at your birth, the sign the Moon occupied, and the sign rising on the eastern horizon at that moment from that place. The Sun is the shorthand most people know; the Moon and Rising are what make a chart feel like a specific person.
Why does it need my birth time?
The Rising sign changes roughly every two hours, so the time decides it. The Sun and Moon usually do not need it — the Moon changes sign about every two and a half days — but on a boundary day the time matters for them too. Without a time, use the moon sign calculator, which says plainly when your birthday is one of those days.
Where does my birth data go?
Nowhere. The positions are computed in your browser, the share image is drawn in your browser, and the link into the full chart carries your details in the part of the URL that never reaches a server.