When you meet someone and feel an instant “spark,” that isn’t random—it’s geometry. In astrology, the magnetic pull between two people is governed primarily by the interaction between Venus (the planet of romance and beauty) and Mars(the planet of passion and drive).
While Sun signs tell you if your personalities match, they cannot predict physical chemistry. To understand the raw attraction between you and a partner, you must look at the specific angles formed between your Venus and Mars placements.
Use the free calculator below to discover:
- The “Heat” Level: Is the attraction mild, intense, or explosive?
- The Nature of Bond: Is it purely physical (Mars-driven) or romantic (Venus-driven)?
- Potential Friction: Are there “Square” aspects indicating a love-hate dynamic?
Enter your planetary degrees below (0-360°) to reveal your synastry report.
❤️ Venus-Mars Chemistry Calculator
Discover the magnetic attraction between two charts.
Enter absolute degrees (0-360).
How to Interpret Your Venus-Mars Results
This calculator analyzes the geometric “Aspects” between your charts. Here is what the different results mean for your relationship:
🔥 The Conjunction (0° – 10°)
“The Fusion.” When one person’s Mars is on top of the other’s Venus, the attraction is immediate and overwhelming. This is often described as “love at first sight.” The sexual chemistry is palpable, and you may find it difficult to keep your hands off each other.
- Pro: Intense passion and unity.
- Con: You may lose your objectivity or individuality in the relationship.
⚡ The Opposition (180°)
“The Magnet.” This aspect creates the classic “opposites attract” dynamic. You are very different people, which creates a high-voltage fascination. One partner often pursues (Mars) while the other seduces (Venus).
- Pro: Exciting, never boring, high sexual tension.
- Con: Can lead to a “push-pull” dynamic or power struggles if not managed well.
💖 The Trine (120°)
“The Flow.” This is the most harmonious aspect. Your romantic desires and sexual drives align perfectly. You don’t have to explain what you want; your partner just “gets it.” The relationship feels easy, natural, and supportive.
- Pro: Deep comfort, easy intimacy, long-term stability.
- Con: Can sometimes lack the “drama” or “edge” of the hard aspects, but is better for marriage.
🌶️ The Square (90°)
“The Firecracker.” This indicates blockage or friction that generates heat. You turn each other on, but you also know exactly how to push each other’s buttons. This is common in “frenemy” relationships or passionate flings that burn hot and fast.
- Pro: Incredible sexual highs and makeup sex.
- Con: Prone to arguments and misunderstandings. Requires patience to last long-term.
Where to find your Degrees?
To use this tool, you need the absolute longitude of your Venus and Mars. If you only know your sign (e.g., “Venus in Taurus at 10 degrees”), use this cheat sheet:
- Aries: 0 + degrees
- Taurus: 30 + degrees
- Gemini: 60 + degrees
- Cancer: 90 + degrees
- Leo: 120 + degrees
- Virgo: 150 + degrees
- Libra: 180 + degrees
- Scorpio: 210 + degrees
- Sagittarius: 240 + degrees
- Capricorn: 270 + degrees
- Aquarius: 300 + degrees
- Pisces: 330 + degrees
(Example: If your Venus is at 5° Scorpio, calculate: 210 + 5 = 215).