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Date & Time
Zodiac Sign Calculator
Western zodiac signs are defined by the Sunโs position on the date you were born, divided into twelve segments of roughly thirty days each. The boundaries shift by a day from year to year, so births on a cusp date can fall either side.
How it works
Date of birth
Sign number (1 = Capricorn, 12 = Sagittarius)
Days into the sign
Day of the year
Birth month
Frequently asked questions
How do I use the Zodiac Sign Calculator?
Fill in the fields above โ the result recalculates instantly as you type. Everything runs in your browser, so the values you enter are never collected or stored.
Is this calculator free?
Yes. It is completely free, requires no account, and works on phones, tablets and desktops.