Justin Bieber × Hailey Bieber

44 out of 100, which lands in our "Worth understanding" band. That number is the weighted result of every aspect between their two birth charts across attraction, emotional connection, communication, stability, and growth. It is the same calculation the free synastry calculator runs on any two charts, using their real public birth data.

Each planet in one chart is compared to each planet in the other. Aspects that form within orb are weighted by how tight they are and whether they read as harmony or friction, then sorted into five dimensions and combined. There is no canonical compatibility formula in astrology, so ours is published in full on the synastry chart page rather than hidden.

Justin Bieber is a Pisces and Hailey Bieber is a Sagittarius. Sun signs are only the headline though: the score above reads the whole chart, which is why it can disagree with what the two Sun signs alone would suggest.

All of it is public: Justin Bieber was born March 1, 1994 in London, Ontario, Canada, Hailey Bieber on November 22, 1996 in Tucson, Arizona, USA. Birth times, where they exist on the record, are listed with their source on this page. Hailey Bieber's birth time is not on the record, and the Moon moves about 13 degrees a day. Scoring every possible birth time across the day puts the real answer between 40 and 47; the number above is the midday chart. The Moon also changes sign during the day for Hailey Bieber, so anything emotional here is the least certain part of the reading.

No. Synastry describes the texture of a connection, not its outcome. A low score usually means more friction to work through, and plenty of long relationships are built on exactly that. This is written for insight and reflection, not prediction.