Zodiac Compatibility Calculator

How is the compatibility percentage calculated?

Only from the elements of the two signs. The same sign scores 70, two different signs of one element score 90, Fire with Air and Earth with Water score 85, Air with Water 60, Air with Earth and Earth with Fire 55, and Fire with Water 50. Opposite signs add 5 points. These are the only values the tool can show: 50, 55, 60, 70, 85 or 90.

Why does the same sign score lower than another sign of the same element?

The tool treats a repeated sign as a special case worth 70, while two different signs that share an element get 90. So Aries with Aries shows 70, Good Match, but Aries with Leo shows 90, Highly Compatible. It is a design choice in the scoring, not an astronomical fact.

What does the opposite-sign bonus change?

It adds 5 points to the six opposite pairs: Aries and Libra, Taurus and Scorpio, Gemini and Sagittarius, Cancer and Capricorn, Leo and Aquarius, Virgo and Pisces. Every one of those pairs is already Fire with Air or Earth with Water, so each moves from 85 to 90.

Are the Love match labels fixed bands?

Yes: 85 and above is Highly Compatible, 70 to 84 Good Match, 55 to 69 Requires Effort and anything lower is Challenging. Fire with Water at 50 is the only combination in the Challenging band, and 70 for the same sign is the only Good Match.

Does the order of the two signs matter?

No. Aries with Libra and Libra with Aries both return 90, and the element and opposition tests are symmetric. The “Your sign” and “Partner’s sign” labels only affect which sign appears first in the results.

What is ignored in the calculation?

Everything except the sun signs’ elements and whether they are opposite. The tool does not use the cardinal, fixed and mutable qualities, moon signs, Venus or Mars placements, rising signs, birth times or any chart comparison, even though a full synastry reading would.

How many different explanations can I see?

Few. The “What makes it work” and “Potential challenges” text depends only on the pair of elements, plus one version for identical elements and one for the same sign. Taurus with Pisces and Virgo with Cancer therefore receive the same lines.

Does a high percentage mean a pair will get on well?

No. Astrology is a belief-based tradition that has not been scientifically validated, and the percentage is a lookup in traditional element associations. It says nothing reliable about real relationships between real people, and it predicts nothing.