Western astrology
Zodiac compatibility
Pick two signs. The score comes from their elements and modalities, not from a mood. The same pair always gets the same number.
Aries and Leo
Aries is Fire and Leo is Fire. Aries is Cardinal and Leo is Fixed.
Elements: same
Two fire signs run hot. You share drive, spontaneity, and a taste for the big gesture, so momentum comes easily. The work is pacing. Neither of you naturally brakes, and small irritations flare into contests.
Modality: cardinal-fixed
One of you starts, the other sustains. That can combine into real momentum or into a standoff, depending on how the decision gets made.
What works
- You share a basic rhythm and rarely need to explain your defaults.
- Trust builds quickly because you value the same things.
- You give each other permission to be yourselves.
What to watch
- Shared blind spots go unchallenged.
- A small irritation repeats because both of you avoid the same conversation.
- Outside input helps break a loop.
How the score works
Each pair gets a base score from the element relationship, then an adjustment from the modality relationship. Scores stay between 35 and 96.
Element base
- Same element: base score 84.
- Fire with Air, or Earth with Water: base score 80.
- Every other element pair: base score 52.
Modality adjustment
- Same modality: add 8.
- Cardinal with Mutable: add 4.
- Fixed with Mutable: add 2.
- Cardinal with Fixed: subtract 4.
Bands
- 88 to 96: A natural fit.
- 76 to 87: Strong potential.
- 64 to 75: Workable with effort.
- 52 to 63: Different rhythms.
- 35 to 51: A stretch.
Fire with Air and Earth with Water are the supportive element pairs. The same element is steady. Every other pair is a stretch that asks for patience.
Want more than a sun sign? Calculate a full birth chart.