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Discover the romantic potential between two people by analyzing Sun signs, Moon signs, Venus and Mars placements for a comprehensive love compatibility score.
Deluxe Astrology is a free online love compatibility calculator that scores romantic alignment across four planetary layers — Sun (identity), Moon (emotion), Venus (love language), and Mars (desire) — producing dimension-specific percentages and an overall compatibility score. Unlike basic Sun-sign-only calculators that give the same result to millions of people, DA factors in all four core love-relevant planets, with optional birth-time precision for accurate Moon and Rising calculations. Results are free, shareable, and grounded in Swiss Ephemeris data.
Sun sign compatibility — the kind you see in magazine columns — captures maybe 10% of the picture. Real romantic chemistry lives in the details. Venus governs what you find attractive, how you express affection, and what you need to feel loved. Mars drives desire, initiative, and how you handle conflict. When your Venus falls in the same sign as someone's Mars, the attraction is usually instant and mutual. When those planets square each other, sparks fly — but so do arguments over fundamentally different love languages.
Moon sign compatibility is where long-term relationships are won or lost. Two people can have magnetic Venus-Mars chemistry and still feel emotionally mismatched if their Moons clash. A Moon in Capricorn needs structure, boundaries, and emotional restraint. A Moon in Sagittarius needs space, spontaneity, and philosophical connection. Neither is wrong — they just need different things when the day is over and the romance fades into domestic routine. This calculator scores all four layers (Sun, Moon, Venus, Mars) because no single placement tells the whole story.
The calculator overlays two people's charts and scores four layers independently. Sun sign harmony measures elemental compatibility — Fire-Air pairs energise each other, Earth-Water pairs stabilise each other. Moon sign resonance compares emotional wavelengths — the most important factor for long-term cohabitation.
Venus alignment reveals whether two people speak the same love language. Mars compatibility measures desire, passion, and conflict dynamics. For a complete picture including all planetary aspects, try our full synastry calculator or composite chart.
Love compatibility measures how well two people's birth charts align across romantic dimensions. It examines Sun sign harmony (core identity), Moon sign resonance (emotional needs), Venus compatibility (love language and attraction), and Mars alignment (desire, passion, and conflict style). A high overall score means natural ease across multiple dimensions — not a guarantee of success, but a strong foundation.
Sun sign compatibility captures roughly 10% of the picture. Your Moon sign governs emotional security and daily compatibility. Venus determines what you find attractive and how you express love. Mars shapes desire, initiative, and how you handle conflict. Two people with incompatible Sun signs but harmonious Moon and Venus placements often have stronger relationships than a Sun-compatible pair with clashing Moons.
Venus represents what you find attractive and how you receive love. Mars represents desire, pursuit, and sexual energy. When one person's Venus falls in the same sign as the other's Mars, the attraction is typically instant and mutual — Venus feels drawn in while Mars feels compelled to pursue. When they square each other, the chemistry is intense but comes with friction around different love languages.
Our calculator scores four layers separately: Sun sign harmony (elemental and modal compatibility), Moon sign resonance (emotional wavelength), Venus alignment (love language match), and Mars compatibility (desire and conflict dynamics). Each layer is weighted and combined into an overall percentage. Trines (120 degrees) and conjunctions (0 degrees) score highest; squares (90 degrees) and oppositions (180 degrees) score lower but indicate growth potential.
Compatible charts deserve a compatible home. Discover Feng Shui guidance for couples — from bedroom placement to element balance.
Explore Cosmic SpaceReviewed by Ravi Khorana
Co-Founder, Deluxe Astrology. Vedic astrologer with expertise in Jyotish, Nakshatras, and Dasha systems.
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