Zodiac compatibility calculator
Spin two sun signs together for a free reading built on real aspect geometry and element pairings. Scroll, drag, tap or use the arrow keys to land on a sign.
Three steps
Pick two signs
Scroll, drag, tap or use the arrow keys on each wheel to land on your sign and theirs.
We find the aspect
The angle between the signs — trine, sextile, square, opposition and so on — plus how your elements pair up.
Read the pairing
A score, attraction, pace and repair bars, and a reading. Then go deeper on the full pair page.
How zodiac compatibility is calculated
Every sign sits at a fixed point on the zodiac wheel. The angle between two signs is called an aspect, and astrologers have long read each aspect differently: trines (same element) feel easy, sextiles supportive, squares charged, oppositions magnetic, and quincunxes a little out of step.
We combine that aspect with the pairing of your elements (fire, earth, air, water) so all 144 combinations stay consistent. Sun signs are only one part of a chart — a full reading also looks at the Moon, Venus and rising sign.
Questions people ask
Which zodiac signs are most compatible?
Signs of the same element form a trine and score highest — for example Aries, Leo and Sagittarius. Fire with air, and earth with water, form sextiles, which are also very supportive.
What is an aspect in astrology?
An aspect is the angle between two points on the zodiac wheel. Between sun signs, the main ones are conjunction (same sign), semi-sextile, sextile, square, trine, quincunx and opposition.
Is a low compatibility score bad?
No. Challenging aspects often bring the most chemistry and growth. The score describes the weather between two signs, not whether a relationship will work.
Do I need my birth time?
Not for this tool — it uses sun signs only. For a full synastry reading, an advisor will need birth dates, times and places.
Try next
- The full compatibility chart →All 78 pairings, scored.
- Every sign in love →
- Name compatibility →