Two charts, one constellation.
Enter two birth details and we'll map the zodiac and numerology signals between you — a fun, symbolic read on your compatibility, not a verdict on your relationship.
Cast the chart →Compatibility Calculator
Free · No email required · Results generated instantly in your browser
How the reading is built
Zodiac placement
Each birth date maps to a sun sign, the starting point traditional astrology uses to describe temperament and pace.
Numerology layer
Names and dates are reduced to core numbers, a numerology technique used to look at communication style and rhythm.
Blended reading
The two layers combine into a single score and a short reading — a symbolic snapshot, not a scientific measurement.
Understanding Your Love Compatibility Score
Compatibility astrology has been used for centuries as a way to think through how two people's energies, habits, and emotional rhythms might align. This calculator draws on two of the oldest tools in that tradition: zodiac sun-sign compatibility and name-and-date numerology. Neither is a scientific measurement of a relationship. Both are frameworks people have used, long before dating apps and personality tests, to put language to something that otherwise feels hard to describe — chemistry, timing, and temperament.
What the zodiac layer looks at
Your sun sign is determined by where the sun was positioned on the day you were born. Each of the twelve signs is traditionally associated with an element — fire, earth, air, or water — and signs that share or complement an element are often described as moving through the world in a similar way. A fire sign paired with an air sign, for example, is traditionally read as an energizing match, while two earth signs are read as a steady, grounded pairing. This calculator uses your and your partner's birth dates to identify both signs and factor their traditional elemental relationship into the overall score.
What the numerology layer looks at
Numerology takes a different angle: it reduces names and birth dates down to single-digit "core numbers" using a letter-to-number system that dates back to Pythagorean number theory. The idea is that these numbers carry a kind of vibration or pattern that shapes how someone communicates, makes decisions, and handles conflict. When two people's core numbers are compared, numerologists look at whether the numbers reinforce each other, balance each other out, or create friction — all of which factor into the blended score you see above.
How to read your result
Treat your score as a conversation starter, not a conclusion. A lower number doesn't mean a relationship is doomed, and a high number isn't a guarantee of smooth sailing — real compatibility is built through communication, shared effort, and time, not a single calculation. Use the reading as a lighthearted lens on your dynamic, and if something in it resonates, let it prompt a real conversation rather than a decision.
Frequently Asked Questions
Is this calculator scientifically accurate?
No. This tool is built for entertainment and self-reflection using traditional astrology and numerology methods, which are not supported by empirical science. It should not be used to make decisions about real relationships.
Do you store the names or dates I enter?
No. All calculations happen directly in your browser. Nothing you type here is sent to a server or saved. See our full Privacy Policy for details on data handling across the site.
Why did I get a different score somewhere else?
Different calculators weigh zodiac and numerology factors differently, and some use additional systems like moon signs or Chinese astrology. There is no single "correct" formula — each is a different symbolic model.
Can I use this for a friend or family member instead of a partner?
Yes. The underlying zodiac and numerology comparison works the same way for friendships or family compatibility — just read the results in that context.