Zodiac Sign Calculator
Find the zodiac sign used by this calculator from a birth date. It returns the matching sign, date range, element, modality, ruling planet, and symbol from the page's fixed month-and-day ranges.
Examples
Mid-May Taurus
A common Taurus birthday in mid-May.
- Date of birth
- May 17, 1990
Embed this calculator
Copy a free iframe snippet for articles, learning pages, forums, wikis, newsletters, and internal docs.
How It Works
Formula
Variables, symbols and units
- Month of birth (1–12)
- Day of birth (1–31)
- Element label paired with the sign in this calculator
- Modality label paired with the sign in this calculator
- Ruling-planet label paired with the sign in this calculator
Calculation method explained
Enter your date of birth. The calculator reads the month and day, matches them against the page's fixed sign ranges, and returns the corresponding sign, date range, element, modality, ruling planet, and unicode symbol.
This calculator uses a fixed month-and-day lookup table:
- Parse the birth date as YYYY-MM-DD. Reject anything that is not a real calendar date (e.g. 2024-02-30).
- Take the month and day; the year does not affect the lookup.
- Walk the twelve built-in sign ranges in order. The first range whose start and end month/day brackets contain your date wins.
- Capricorn is the only range that wraps the year boundary (22 December to 19 January), so it is matched explicitly.
Examples
Mid-May TaurusMay 17, 1990 → Taurus
A common Taurus birthday in mid-May.
- Date of birth
- May 17, 1990
- Zodiac sign
- Taurus
New Year's CapricornJan 1, 1996 → Capricorn
January 1 falls in the Capricorn range that started 22 December.
- Date of birth
- Jan 1, 1996
- Zodiac sign
- Capricorn
Aries cusp dayMar 21, 2024 → Aries
March 21 — the first day of Aries.
- Date of birth
- Mar 21, 2024
- Zodiac sign
- Aries