DocomintCalculadora de Signo Zodiacal
Encuentra el signo zodiacal occidental a partir de una fecha de nacimiento.
What is a Calculadora de Signo Zodiacal?
Looks up the Western (tropical) zodiac sign for any birth date against the standard twelve date ranges — each sign spans parts of two calendar months, which is why a birthday near the 19th–23rd of a month is worth double-checking against the exact boundary rather than assuming by month alone.
How to use the Calculadora de Signo Zodiacal
- Enter a birth date
- Press Find Sign
- The matching Western zodiac sign appears instantly, looked up on your device
Formula
Looks up the birth date against 12 fixed Western tropical zodiac date ranges
Each sign's range is a fixed span of roughly a month, spanning parts of two calendar months.
Example
A birth date of June 15 falls under Gemini (May 21 – June 20) — one day later, June 21, would already be Cancer, since Gemini's range ends right at June 20.
Common mistakes
- Assuming this uses the Chinese zodiac's 12-year animal cycle based on birth year — it's the Western sun-sign system based on birth month and day instead.
- Expecting an exact match to every source for a birthday right on a boundary date — different publications use slightly different boundary conventions.
- Confusing "zodiac sign" (the sun sign this computes) with a full astrological birth chart, which factors in the moon, rising sign, and planetary positions this tool doesn't calculate.
Frequently asked questions
Does this use Western or Chinese zodiac?
Western (tropical) zodiac — the twelve sun-sign system based on birth month and day (Aries, Taurus, and so on). Chinese zodiac uses a different twelve-year animal cycle based on birth year, which this tool doesn't cover.
Why do zodiac sign boundary dates sometimes shift by a day between sources?
Different publications use slightly different boundary conventions, and the sun's actual position relative to each constellation drifts gradually over centuries — this tool uses one commonly cited, fixed set of date ranges, but you may see a birthday within a day or two of a boundary listed under either sign elsewhere.
What if my birthday falls exactly on the boundary date?
This tool uses one specific, commonly cited set of date ranges, so a birthday right on a boundary (like June 20/21) is assigned to whichever sign this tool's ranges specify — you may see the same date listed under the adjacent sign on other sources.
Does this account for the astronomical precession of the zodiac?
No — this uses the standard fixed tropical (seasonal) date ranges that Western astrology conventionally uses, not an astronomically adjusted calculation that accounts for the actual current position of constellations, which has drifted over centuries.
Is my numbers uploaded anywhere?
No — Calculadora de Signo Zodiacal runs entirely in your browser using JavaScript/WebAssembly. Your numbers is never sent to a server.