Zodiac Sign Calculator
How to use
- 1Enter your date of birth.
- 2Born on a day when the sign changes? Add your birth time and place: search for a city, or enter latitude, longitude and time zone.
- 3Read your sign with its element, modality, ruling planet, symbol, traits, strengths, weaknesses and opposite sign.
- 4Open the compatibility pages for your three best matches, or check the table of all 12 sign dates.
How the calculator finds your sign
Your zodiac sign, also called your star sign or Sun sign, is the sign the Sun was in on the day you were born. With only a date, the calculator uses the conventional date ranges. The Sun does not change sign on the same day every year, though: depending on the year, the change can fall a day earlier or later. If you add your birth time and place, the tool computes the Sun’s exact ecliptic longitude and shows its degree, so a boundary (cusp) birthday is settled precisely. Daylight saving time is handled automatically, and the tool warns you when your date is a boundary day and no time has been entered.
Zodiac sign dates
The conventional dates are: 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 and Pisces February 19 – March 20. The calculator uses the tropical zodiac of Western astrology, which is tied to the seasons rather than to the constellations.
Elements, modalities and ruling planets
Each sign belongs to one of four elements (fire, earth, air, water) and one of three modalities (cardinal, fixed, mutable), and has a ruling planet; for Scorpio, Aquarius and Pisces both the modern and the traditional ruler are shown. Astrologers use these building blocks to describe a sign’s temperament: fire is associated with enthusiasm, earth with practicality, air with ideas and water with feelings. The result card also names your opposite sign and the three signs that score highest with yours in the compatibility tool.
Astrology is for entertainment
Astrology is a cultural tradition, not a science. There is no scientific evidence that the position of the Sun at birth shapes personality, relationships or the future. The descriptions on this page summarise what astrologers traditionally say about each sign. Enjoy them as a conversation starter, not as advice for real decisions. Your date of birth stays in your browser and is not sent anywhere.
Frequently asked questions
What is my zodiac sign?
It is the sign the Sun was in when you were born. Enter your date of birth above; for example, someone born on May 1 is a Taurus.
What if I was born on the cusp?
On boundary days the sign depends on the year and the exact time. Add your birth time and place and the calculator works out which side of the line the Sun was on.
Is a zodiac sign the same as a star sign or Sun sign?
Yes. All three terms mean the sign the Sun was in at your birth. Your Moon sign and rising sign are different and need a birth time.
Why do some websites give slightly different dates?
Because the Sun enters each sign on a slightly different day each year, sites round the boundaries differently. The calculator avoids this by computing the Sun’s actual position when you give a birth time.
Is this the tropical or the sidereal zodiac?
Tropical, as used in Western astrology. Vedic (sidereal) astrology usually places the Sun about one sign earlier.
Add this tool to your website
Paste the code below into your site’s HTML; the tool runs on your page and stays up to date automatically.
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