Zodiac Sign Calculator

Enter a birth date to find the corresponding Western zodiac sign. This is a fun astrology reference tool based on the commonly used tropical zodiac date ranges.

Date of birth

Please enter a valid date.

Your zodiac sign

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Western Zodiac Sign Dates

Sign	Dates
Aries	March 21–April 19
Taurus	April 20–May 20
Gemini	May 21–June 20
Cancer	June 21–July 22
Leo	July 23–August 22
Virgo	August 23–September 22
Libra	September 23–October 22
Scorpio	October 23–November 21
Sagittarius	November 22–December 21
Capricorn	December 22–January 19
Aquarius	January 20–February 18
Pisces	February 19–March 20

How to Use the Zodiac Sign Calculator

Enter your date of birth.
Select Calculate.
The calculator returns the zodiac sign and its standard date range.

Pick your date of birth and select Calculate. The result shows your sign and its common date range. The calculator uses fixed tropical date ranges and ignores birth time and birthplace, so another system may give a different sign for someone born close to a cutoff date.

Good to know

Zodiac date cutoffs can differ slightly between astrology systems. This tool uses the commonly published tropical zodiac ranges and is intended for entertainment and general reference.

How the Zodiac Sign Calculation Works

The Western tropical zodiac divides the annual solar path into 12 conventional sign ranges. The calculator compares the entered month and day with those published ranges and returns the matching sign. The calculation is intentionally simple: it does not use birth time, location, ascendant calculations or a complete natal chart. A few astrology references use slightly different boundary dates, so this tool follows the commonly published tropical ranges stated on the page. The result is intended for entertainment and general reference.

Worked Example

Suppose someone enters July 30 as a birth date. That date falls within the commonly used Leo range of July 23 through August 22, so the calculator returns Leo. If the date is changed to August 23, it crosses the stated boundary and returns Virgo. This demonstrates that the result is determined by the published date range, not by a subjective interpretation of personality traits.

More boundary checks: 21 December gives Sagittarius and 22 December gives Capricorn. 19 January gives Capricorn and 20 January gives Aquarius. Every date of the year, including 29 February, falls into exactly one of the 12 ranges.