Zodiac Compatibility Calculator

Two birth dates, two signs, one relationship. Enter both dates (or choose signs) for compatibility scores and a full reading for your pair.

Compatibility Calculator

Enter two birth dates — or simply pick two signs.

Your result will appear here.

How We Score Compatibility

Our scores start from the angle between the two signs on the zodiac wheel — the same geometry astrologers use for aspects — and then adjust for elements. Same-element trines (120°) and friendly sextiles (60°) score highest; squares (90°) and quincunxes (150°) bring friction; oppositions (180°) are magnetic but need balance.

RelationshipAngleFeel
Same sign0°mirror match
Semi-sextile (neighbouring signs)30°neighbours
Sextile (60°)60°easy friends
Square (90°)90°sparks and friction
Trine (120°)120°natural harmony
Quincunx (150°)150°puzzle pair
Opposition (180°)180°magnetic opposites

Compatibility Chart (Overall %)

Click any number for the full pair reading.

Beyond Sun Signs

Sun-sign compatibility is a starting point. The Moon (emotional needs), Venus (love style) and Mars (desire) refine the picture — find them with the planet signs calculator. For a numerological view, try the couple destiny matrix.

Questions & Answers

Which zodiac signs are most compatible?

Signs of the same element (trines) and complementary elements 60° apart score highest — for example Aries and Leo, Taurus and Virgo, Gemini and Aquarius, Cancer and Pisces.

Can incompatible signs make it work?

Yes. Challenging angles describe friction, not failure — many lasting couples have square or opposite Sun signs.

PsychicBook logo

Ask a Real Astrologer

Turn your numbers into a conversation: PsychicBook gives new customers 10 free minutes and 50% off the first session.

Start free