AstroCalculatorPro is an independent, free calculator for the three placements most people want to know first: the Sun, Moon and Rising signs. It exists because many tools either hide the result behind sign-ups or quietly guess when information is missing. We wanted the opposite: a clear answer, an honest note when the answer is uncertain, and nothing stored.
What the calculator actually does
The positions are real astronomy. Your local birth time is converted to Universal Time using historical timezone rules, an astronomical model computes where the Sun, Moon and planets appeared along the ecliptic, and local sidereal time gives the degree rising on the eastern horizon. Those longitudes are then mapped to the tropical zodiac.
What astrology is, and is not
The interpretations attached to those positions come from astrological tradition. Astrology is not a scientific personality assessment and has not been shown to predict character or events. We present readings for self-reflection and entertainment, and we say so plainly wherever results appear.
Privacy by design
Birth details are processed in your browser and are not saved or sent to our server. Only the city search contacts an outside service. Read the privacy policy for the full detail.
Accessibility
We aim for readable type, keyboard-accessible controls, labelled form fields, sufficient colour contrast and reduced motion when your system requests it. If something gets in your way, please tell us through the contact page.
Independence
This site is not affiliated with any astrology organisation, publisher or software vendor.