What's My Zodiac Sign?

What is What's My Zodiac Sign?

A Western zodiac sign calculator answers 'what is my zodiac sign?' by mapping a birth month and day to one of the 12 commonly used tropical sun-sign ranges. The result includes the sign's symbol, element, modality, polarity, ruling planet, and traditional themes. These labels belong to astrological tradition and are presented for entertainment and cultural reference, not as a scientific personality assessment.

How to use What's My Zodiac Sign

1. Select the month in which you were born.
2. Select a valid birth day for that month, then choose Calculate.
3. Read the sun sign and the exact date range used by this calculator.
4. Review the symbol, element, modality, ruler, and cusp note without treating traditional themes as measured personal facts.

Features

• Western zodiac lookup using only the birth month and day.
• Date range, symbol, element, modality, polarity, ruler, and traditional themes.
• Clear entertainment framing without scientific claims.

How the calculation works

The calculator maps the entered month and day to the commonly used tropical zodiac date ranges shown in the reference table below. It does not calculate the astronomical position of the Sun for a specific time and place.

Worked example

A March 25 birthday returns Aries because it falls within the March 21 to April 19 range used by this calculator. An October 2 birthday returns Libra.

Zodiac signs and dates at a glance

This zodiac sign date chart is the same standard tropical lookup used by the calculator. It also shows the four elements and three modalities used to group the 12 signs.

A birthday on the first or last date of a range is near a cusp. Different published tables or a time-specific chart can place some boundary birthdays differently.

Sun sign, moon sign, and rising sign are different

The result from this calculator is a sun sign, the label most people mean when they ask for a star sign or zodiac sign by birthday. It uses only the month and day because it is a simplified date-range lookup.

A moon sign is based on the Moon's position, while a rising sign or ascendant depends on the eastern horizon at the birth time and place. Those results require a full birth date, an accurate birth time, a location, and astronomical calculations, so this tool does not guess them.

How zodiac cusp dates are handled

A cusp is the boundary between two consecutive sign ranges. This calculator uses the complete date ranges in the table above, so every valid month-and-day entry receives one result and the rule remains easy to inspect.

If you were born near a transition and another source gives a different sign, compare its date convention first. A time-specific astrological chart may also use the birth year, clock time, timezone, and location to place the Sun more precisely than a fixed birthday table can.

Why Ophiuchus is not a thirteenth sign here

The tropical zodiac used in mainstream Western astrology divides the ecliptic into 12 equal signs tied to the seasonal cycle. Ophiuchus is an astronomical constellation crossed by the Sun's apparent path, but it is not part of this traditional 12-sign system.

Astronomical constellations and astrological signs are therefore not interchangeable lists. This calculator identifies a traditional tropical sun sign; it does not claim to identify the physical constellation behind the Sun on a birth date.

Common use cases

• Finding a Western zodiac sign or star sign by birthday.
• Checking all 12 zodiac signs and dates in one clear chart.
• Learning the element, modality, polarity, ruler, and symbol associated with a sun sign.
• Adding light cultural context to a birthday card, party theme, or conversation.
• Comparing Western zodiac, Chinese zodiac, and birthstone results without combining their different traditions.

Accuracy and limitations

The month-and-day result is exact for the published date table used by this calculator, but the table is a simplified convention rather than a complete natal-chart calculation. It does not use year, time, location, timezone, or astronomical ephemeris data. Date boundaries can vary near a cusp, and traditional sign descriptions are not scientific findings or grounds for consequential decisions.

Reviewed 2026-07-16