Zodiac Compatibility Calculator
This entertainment-only astrology comparison maps signs to traditional elements and applies a simple rule-based score.
Last updated · View algorithm, constants and default inputs (JSON)
About this calculator
This entertainment-only astrology comparison maps signs to traditional elements and applies a simple rule-based score. It is not an evidence-based measure or prediction of relationship compatibility.
Worked example
calculated with the default values below
First sign Aries · Second sign Leo Entertainment score from sign-element rules 85 % · Element of the first sign Fire · Element of the second sign Fire · Verdict Natural match · Element pairing Same element
General background references
Disclaimer
These calculators give general estimates. Sizing, pricing, availability and standards vary by brand, retailer and country, so treat the output as a starting point and confirm it against the seller's or authority's own figures.
Implementation source
This record describes the implementation used by this page. It is not independent validation. External references, when available, support only the stated formula or definition; estimates and custom rules retain their own assumptions.
Formula and variables
S = L(E1, E2); sign1 = sign2 → S = max(S, 80)
- E1
- Element of sign 1
- E2
- Element of sign 2
- L
- Element-pair lookup score
- S
- Compatibility score (%)
Elements: Fire (Aries, Leo, Sagittarius), Earth (Taurus, Virgo, Capricorn), Air (Gemini, Libra, Aquarius), Water (Cancer, Scorpio, Pisces). Same element: Fire/Earth/Water 85, Air 80; Fire–Air and Earth–Water 90; clashes Earth–Fire 55, Fire–Water 45, Air–Earth 50, Air–Water 55; other pairs 50. Verdicts: ≥ 85 natural match, ≥ 70 easy connection, ≥ 55 with effort, below that challenging.
Frequently asked questions
How are element-pair scores assigned?
The calculator maps all twelve listed zodiac signs to four elements, then assigns fixed scores to same-element and selected cross-element pairs. Fire–air and earth–water score 90; same fire scores 85. The result is a playful lookup, not a relationship assessment. Aquarius and Pisces are both included.