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Marriage calculator
Built for the long haul, not just the spark
A marriage is a different question than a first date. This calculator reads for endurance.
A true marriage calculator looks past chemistry to the qualities that hold a partnership together over decades: emotional security, stability, communication and the ability to move through conflict with grace. Using real synastry astrology, this tool builds both birth charts and weights your score toward Saturn and Jupiter contacts (long-term commitment) and Moon connections (emotional attunement) — the classical markers of a lasting union.
The result is a marriage-compatibility percentage plus a breakdown of your strongest and most tender areas — a thoughtful starting point for any couple thinking about forever.
What we measure
The four pillars of a lasting marriage
Long-term stability
The commitment and shared-values glue that carries a marriage through change. Weighted most heavily of all.
Emotional security
How safe, understood and cared-for you feel with each other — the emotional home a marriage is built on.
Communication
How easily you understand each other and work things out — the daily fabric of living together well.
Harmony
How you handle friction. Couples who repair conflict gently build far more resilient marriages.
Frequently asked questions
How does the marriage calculator work?
It uses real synastry astrology. From both birth dates (and optional birth times and cities) it builds each person's chart with Meeus astronomical algorithms, then compares the two charts. Unlike a general love calculator, the marriage score is weighted toward the factors that sustain a lifelong partnership — long-term stability (Saturn and Jupiter contacts), emotional bond (Moon connections), communication and conflict harmony — rather than raw romantic attraction.
What makes marriage compatibility different from love compatibility?
Love compatibility emphasises romance, attraction and chemistry. Marriage compatibility emphasises endurance: emotional security, the ability to resolve conflict, aligned long-term values and steady commitment. Our marriage calculator re-weights the same real synastry data toward those lasting qualities, so a couple with fireworks but little stability may score differently here than on the love calculator.
Do I need birth times for the marriage calculator?
No — birth dates alone give a strong reading using all 10 planets. Adding each person's birth time and city sharpens the result further by unlocking house overlays, which show how you activate each other's home, commitment and intimacy sectors. It is optional but recommended for the most accurate marriage compatibility.
Can a marriage calculator predict if we should get married?
No calculator can — and none should. This is a reflective tool, not a decision-maker. Astrology can highlight where you naturally align and where you will need to work, but a healthy marriage is built through communication, effort and choice. If you are seriously considering marriage, Dr. Dan's marriage coaching helps couples build the real-world skills that lasting partnerships depend on.
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