☿ Zodiac Sign & Compatibility

Western Astrology Reference & Compatibility Checker
For entertainment & self-reflection only. Astrology is a symbolic tradition, not a scientifically validated system. Compatibility scores are based on classical astrological rules and are meant to be fun — not a guide for life decisions.

🗓️ What's My Sign?

💫 Check Compatibility

The 12 Zodiac Signs

Click a sign to read its full profile.

Zodiac Sign Dates Reference

Cusp dates (typically the 20th–23rd of a month) can shift ±1 day depending on the year. If you were born on a transition date, consult an ephemeris for your birth year to confirm your exact sign.

Sign Symbol Dates Element Modality Ruling Planet

Full Compatibility Matrix

Color key: ⭐⭐⭐⭐⭐ Excellent ⭐⭐⭐⭐ Good ⭐⭐⭐ Neutral ⭐⭐ Challenging ⭐ Friction

How Zodiac Compatibility Works

Element Harmony

The four elements are the foundation of astrological compatibility analysis:

🔥 Fire
Aries · Leo · Sagittarius
Passionate, bold, spontaneous. Harmonizes with Air (fans the flame). Creates friction with Earth (smothers) and Water (extinguishes).
🌍 Earth
Taurus · Virgo · Capricorn
Grounded, practical, reliable. Harmonizes with Water (nurtures growth). Friction with Fire (burns dry) and Air (scatters soil).
💨 Air
Gemini · Libra · Aquarius
Intellectual, communicative, social. Harmonizes with Fire (fuels). Friction with Earth (stagnates) and Water (storms).
🌊 Water
Cancer · Scorpio · Pisces
Emotional, intuitive, deep. Harmonizes with Earth (forms rivers). Friction with Fire (clashes) and Air (evaporates).

Modality Dynamics

Modality describes how a sign approaches action and change:

  • Cardinal + Mutable: Cardinal leads, Mutable adapts — a smooth, complementary flow.
  • Same Modality (e.g., Fixed + Fixed): Shared style but potential power struggles; needs mutual respect.
  • Cardinal + Fixed: The initiator meets the immovable force — dynamic tension that can be productive.
  • Opposite Signs (6 apart in the wheel): Maximum polarity — "opposites attract" potential plus inherent friction.

How Scores Are Calculated (Entertainment System)

Our rule-based system starts from element harmony (same element → base +2, complementary elements → +1, neutral → 0, clashing elements → −1), then adjusts for modality (+1 Cardinal+Mutable, 0 same modality, −1 same Fixed/Fixed, 0 Cardinal/Cardinal). Opposite signs get a bonus (+1) for the "magnetic tension" archetype. Scores are presented on a 1–5 scale. This is a fun heuristic, not a scientific measurement.

Frequently Asked Questions

The standard tropical zodiac dates are: 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), Pisces (Feb 19–Mar 20).

Note: The exact changeover day can shift ±1 day by year because the sun's position is astronomical, not exactly aligned to the calendar. Cusp births should verify using an ephemeris.

Zodiac compatibility is an astrological concept where pairs of signs are assessed for natural harmony or tension based on their elements and modalities. A Fire sign paired with an Air sign, for example, is traditionally seen as energizing because air fuels fire. An Earth sign paired with a Water sign is seen as nurturing.

It is a symbolic framework for self-reflection and entertainment — not a scientific predictor of relationship success. Real compatibility depends on individual personalities, shared values, and communication.

Traditionally, signs of the same element are highly compatible: Aries-Leo-Sagittarius (Fire), Taurus-Virgo-Capricorn (Earth), Gemini-Libra-Aquarius (Air), Cancer-Scorpio-Pisces (Water). Cross-element harmony also exists: Fire+Air and Earth+Water are classical astrological complements.

Opposite signs (Aries↔Libra, Taurus↔Scorpio, etc.) are often cited as magnetically attracted pairs — their differences create both tension and fascination.

A cusp refers to a birthday that falls near the transition between two zodiac signs — typically around the 19th–23rd of any month. Because the sun's movement is astronomical (not perfectly calendar-aligned), the exact transition time shifts slightly each year. Someone born on April 19, for instance, could be Aries or Taurus depending on the year and time of day.

To get a definitive answer for a cusp birthday, look up an astrology ephemeris for your specific birth year, or use a birth chart calculator with your exact birth time.

Cardinal signs (Aries, Cancer, Libra, Capricorn) launch seasons and tend to be initiators — they start things, lead, and spark change. Fixed signs (Taurus, Leo, Scorpio, Aquarius) fall mid-season and tend to be determined and persistent — they sustain what Cardinals begin. Mutable signs (Gemini, Virgo, Sagittarius, Pisces) fall at season's end and tend to be adaptable and flexible — they transition and prepare for what comes next.

No. Multiple scientific studies have found no statistically significant correlation between zodiac signs and personality traits, relationship success, or any other outcome. Astrology is a symbolic and cultural tradition with thousands of years of history — it offers a rich language for self-reflection and storytelling, but it is not a validated predictive science.

Use this tool for what it does best: exploring different perspectives on personality archetypes, sparking conversation, and having fun.