Last updated October 13, 2026 · Report an error
Each of the 12 Western zodiac signs corresponds to a fixed date range on the calendar — simple to look up once you know the ranges, but easy to mix up (especially near a sign's boundary dates).
This calculator finds your Western (tropical) zodiac sign directly from your birth month and day.
How it works
Enter your birth month and day. The calculator matches your birthday against the 12 standard tropical zodiac date ranges to find your sign.
- Enter birth month.
- Enter birth day (1-31).
- Click Calculate to see your results.
Examples
A birthday on August 16
August 16 falls within the Leo date range (July 23 - August 22).
Who should use it
- Finding your own or someone else's Western zodiac sign from their birthday.
- Quick reference for zodiac-themed content or personal curiosity.
Industry applications
- Entertainment and lifestyle content
- Cultural and educational content
Advantages
- Instant lookup using the standard tropical zodiac date ranges.
- Simple, single-purpose tool with no unnecessary extra steps.
Limitations
- Uses one standard set of boundary dates — some astrological traditions use slightly different cutoffs.
Common mistakes to avoid
- Confusing Western zodiac (month/day based) with Chinese zodiac (year based) — they're entirely different systems.
- Assuming every source uses identical boundary dates — some vary by a day for signs right at the edge.
Best practices
- If your birthday falls right on a boundary date, check a couple of sources for consistency, since exact cutoff dates can vary slightly by source.
Tips
- If you want your Chinese zodiac sign as well (based on birth year rather than month/day), use the separate Chinese Zodiac Calculator.
Frequently asked questions
Yes, with no signup and no limit on how many dates you check.
Aries (Mar 21-Apr 19), Taurus (Apr 20-May 20), Gemini (May 21-Jun 20), Cancer (Jun 21-Jul 22), Leo (Jul 23-Aug 22), Virgo (Aug 23-Sep 22), Libra (Sep 23-Oct 22), Scorpio (Oct 23-Nov 21), Sagittarius (Nov 22-Dec 21), Capricorn (Dec 22-Jan 19), Aquarius (Jan 20-Feb 18), and Pisces (Feb 19-Mar 20).
This calculator uses the standard, most commonly cited date ranges — some sources vary by a day for boundary dates, so if you're right on the edge, you may see slightly different signs listed elsewhere.
This is Western (tropical) astrology, based on your birth month and day — for Chinese zodiac (based on birth year), see the separate Chinese Zodiac Calculator.