How to use it
- Choose the first sun sign in First sign.
- Choose the second sun sign in Second sign. The result appears at once.
- Read Match score and What the tradition says, then check How the score is worked out to see each part.
- Open Score of every pair to compare the sign with all the others.
How the score is built
The score adds three parts. Each part comes from a fixed points table, so you can check the total by hand. The total runs from 20 to 100.
The order of the first and second signs does not change the score: each pair is scored the same way in either order.
score = element points + aspect points + modality points- Element: the same element 35; compatible (fire with air, earth with water) 30; mixed (fire with earth, air with water) 20; opposed (fire with water, air with earth) 10.
- Aspect, by the signs apart the shorter way round the zodiac: same sign 25; one or five signs 20; two (sextile) 35; three (square) 0; four (trine) 45; six (opposition) 15.
- Modality: the same modality (cardinal, fixed or mutable) 10; different modalities 20.
Why the readings are written per relation
Each relation has its own reading: there is one text for each element relation, each aspect and each modality relation. The reading of a pair puts its three relations together, so pairs with the same three relations read alike, with only the element names changed.
The readings describe what the tradition says about a kind of relation. They are not findings about any real couple, friends or colleagues.
What the score does not measure
- It does not know your birth dates, your birth times or your charts. It uses only the sun sign.
- It does not measure love, trust or the quality of a real relationship, which depend on the people and on what they do together.
Worked example: Aries and Gemini
Aries is a fire sign and Gemini an air sign. In the tradition fire and air are compatible elements, so the element gives 30 points.
Gemini is two signs after Aries, a sextile, which gives 35 points. Aries is cardinal and Gemini is mutable, so the modalities differ and give 20 points.
30 + 35 + 20 = 85 out of 100, a strong tradition match.
| Part | Relation | Points |
|---|---|---|
| Element | Fire and air: compatible | 30 |
| Aspect | Two signs apart: sextile | 35 |
| Modality | Cardinal and mutable: different | 20 |
| Total | 85 |
Frequently asked questions
Is the compatibility score scientific?
No. It is a traditional scheme that sums points for the element, the sign distance and the modality of two sun signs. The points are fixed by this page so that anyone can check the sum, but no study shows that they predict relationships.
Why do different pairs sometimes score the same?
Pairs score the same when they share the same kinds of relation. Aries with Gemini and Leo with Libra both score 85: each has a compatible element, a sextile and different modalities. The score depends on the relations, not on the names of the signs.
Which pair scores the highest?
Two signs of the same element in a trine with different modalities score 100. Leo and Sagittarius are one example: both fire, four signs apart, Leo fixed and Sagittarius mutable.
Does the order of the two signs matter?
No. The table is symmetric, so Aries with Gemini and Gemini with Aries both score 85.
Can I use this for friendship or work?
The tradition is about the sign relations, so you can read the same result for any pair of people. It is still only entertainment and reflection, and it does not replace getting to know someone.
Sources
- Wikipedia: Astrological aspect and the traditional relations between signs
- Wikipedia: Zodiac, the elements and modalities of the signs
Figures and text last checked on Tuesday, November 10, 2026.