Still wondering why you keep repeating the same patterns in this relationship? Most compatibility tools only look at your sun sign — that's less than 10% of your full astrological picture. Our free astrology compatibility calculator analyzes your complete birth chart: Sun, Moon, Rising, Venus, and Mars — and explains the patterns shaping your relationship.
FREE•No Sign-Up Required
Enter two full birth profiles — we compute each chart’s planet positions and the major inter-chart aspects (geocentric ecliptic).
Date picker language follows your browser/system locale.
Time picker format follows your browser/system locale.
Date picker language follows your browser/system locale.
Time picker format follows your browser/system locale.
Astrology compatibility — also called synastry — is the practice of comparing two people's birth charts to understand how their personalities, emotions, and values interact. When done right, it reveals not just whether two people are compatible, but why certain patterns keep showing up in the relationship.
A real compatibility reading examines the dynamic between your Moon signs (emotional needs), Venus signs (how you give and receive love), Rising signs (how you present yourself), and dozens of planetary aspects in between. Our tool analyzes all of these — not just the sun sign combination that millions of other couples have already read.
Traditional compatibility reports give you a score and walk away. Our AI lets you have a real conversation about your relationship. Ask "Why do we always argue about the same things?" or "Is this relationship worth fighting for?" — and get answers grounded in your actual birth charts, not generic zodiac descriptions.
Instead of a vague "highly compatible" label, you get specific scores across Love & Romance, Communication Style, Emotional Bond, Trust & Loyalty, and Long-Term Potential. Each dimension comes with a plain-language explanation — so you know exactly where you and your partner shine together, and where to put in the work.
Love compatibility gets all the attention, but the same astrological principles apply to every meaningful relationship. Whether you're checking romantic compatibility, assessing a potential business partner, understanding a difficult friendship, or making sense of family dynamics — our tool handles all four relationship types with tailored analysis for each.
Not a table lookup. Not a generic sun sign report. A real astrology compatibility analysis — built around your actual planetary positions.
Your sun sign is just the beginning. We analyze your Moon sign (emotional needs), Rising sign (how you show up in relationships), and how all three interact with your partner's chart.
Venus governs how you give and receive love. Mars governs how you pursue and desire. Misalignment here explains more relationship tension than any sun sign ever could.
Love & Romance, Communication Style, Emotional Bond, Trust & Loyalty, Long-Term Potential — five specific scores, each with a plain-language explanation. Not a vague percentage.
After your reading, ask anything. Why do you keep having the same argument? Are your life goals compatible? What does their Moon in Scorpio mean for your relationship? Real answers, on demand.
Romantic, Friendship, Work & Career, or Family — each type uses different astrological factors weighted for what matters most in that context. One tool, every relationship in your life.
No account required. No birth time needed for your first reading. Results appear in under 30 seconds. Your data is encrypted and never sold to third parties.
Here's the honest truth about most astrology compatibility tools: they look up your sun sign combination from a table and return the same paragraph that millions of others have already read. That's not a compatibility reading. That's a horoscope.
No astrology knowledge required. Enter two birth dates and get a detailed compatibility analysis — free, private, and ready in under 30 seconds.
No birth time needed for your first reading. Just enter both names and dates of birth to get an instant compatibility overview. Adding a birth time later unlocks your Rising sign for even more accurate results.
Your results appear instantly — a compatibility score across five dimensions: Love & Romance, Communication, Trust, Emotional Bond, and Long-Term Potential. Each score comes with a plain-language explanation, no astrological jargon.
The free reading covers your core compatibility score across five dimensions — no account needed. Want to know why you keep having the same argument, or whether your financial values align? Upgrade to the full AI report to ask anything about your relationship and get personalized answers grounded in your actual birth charts.
Real users who discovered something true about their relationships through astrology compatibility.
Priya M.
Libra ☿ dating a Capricorn
I've used a dozen astrology apps and this is the first one that actually explained the why behind our relationship patterns. The AI conversation feature is unlike anything else I've tried.
James T.
Used the Work Compatibility reading
I was skeptical about astrology compatibility charts but tried this before a business partnership. The reading flagged exactly the communication style clash we later experienced. Wish I'd taken it more seriously sooner.
Sofia R.
First-time astrology user
Finally — a birth chart compatibility tool that doesn't assume I have a PhD in astrology. The plain-language breakdown is refreshing. I actually understood everything it said.
Marcus W.
Scorpio in a long-distance relationship
The five-dimension score was eye-opening. We score high on emotional bond but low on communication style — and that's exactly the problem we've been having. It's like it read our relationship.
Aisha K.
Checking friendship compatibility
I used the friendship compatibility feature to understand why my best friend and I clash sometimes despite caring about each other deeply. The Moon sign explanation made everything click.
Daniel L.
Gemini, newly single
After a breakup I wanted to understand what went wrong astrologically. The full report was honestly more insightful than months of overthinking. The Venus incompatibility section described our relationship perfectly.
Rachel S.
Taurus mom checking family compatibility
I checked the family compatibility with my teenage daughter and it helped me understand why we communicate so differently. The advice section gave me real, practical things to try. We've been better since.
Lena B.
Pisces, newly dating a Virgo
Everyone told me Pisces and Virgo are opposites. This tool showed me that our moon signs are incredibly compatible, which explains the connection I felt. Now I understand the dynamic instead of just guessing.
Have a question about astrology compatibility? We've covered the most common ones below.
Stop guessing. Stop reading generic astrology compatibility pairings written for millions of people. Get an astrology compatibility reading built around your actual birth charts — free, private, and ready in 30 seconds. No sign-up required.
