Astro Sign Calculator

Find a common Western zodiac sun sign from a birth date.

How the astro sign calculator works

The calculator uses conventional tropical zodiac date cutoffs. Exact sign boundaries can vary by year, time, and location, so dates near a boundary may require a full chart.

Example and useful facts

Example: Find a common Western zodiac sun sign from a birth date. Enter the sample values above, then change one input at a time to see how the result changes.

Formula and assumptions: The calculator uses conventional tropical zodiac date cutoffs. Exact sign boundaries can vary by year, time, and location, so dates near a boundary may require a full chart.

Did you know? Astrology is a cultural belief system and is not scientifically established as a way to predict personality or events.

Frequently asked questions

What does the astro sign calculator calculate?

Find a common Western zodiac sun sign from a birth date.

Are the results exact?

The result follows the formula and assumptions shown on this page. Real-world rules, measurements, rates, and individual circumstances can affect the final answer.

Results are estimates for general information only. They are not a substitute for professional advice where applicable. Found a mistake? Report an error.