Astrology and compatibility

Which zodiac signs are compatible?

By Inti Foundation · updated 2 October 2026

In Western astrology, compatible zodiac signs are the signs of the same element, standing 120° apart — the trine: Aries, Leo, Sagittarius (Fire); Taurus, Virgo, Capricorn (Earth); Gemini, Libra, Aquarius (Air); Cancer, Scorpio, Pisces (Water). Next come signs 60° apart — the sextile, which pairs Fire with Air and Earth with Water — while two signs at a 90° square are the pair that needs the most give and take. This is a prompt about temperament to help two people understand each other, not a verdict on who belongs with whom; the 12-sign table below follows the sign order and elements of Inti Soul's astrology engine.

Try it now: How two people match by birth date

Same element

The 120° trine: two signs that catch each other's rhythm easily.

Complementary elements

Fire with Air, Earth with Water: the 60° sextile or the 180° opposition.

The whole chart

The Moon, Venus and Mars say more than one pair of Sun signs.

The four element groups: the trine signs

Inti Soul's astrology engine assigns the elements in sign order — Fire, Earth, Air, Water, then again — so the three signs of each element always sit 120° apart. In brackets is the theme the app's astrology glossary gives each sign:

Fire: Aries (the energy of beginnings), Leo (radiance), Sagittarius (the spirit of exploration).
Earth: Taurus (steadiness), Virgo (dedication), Capricorn (perseverance).
Air: Gemini (curiosity), Libra (balance), Aquarius (independence).
Water: Cancer (care), Scorpio (depth), Pisces (empathy).

Compatibility table for the 12 zodiac signs

Looking only at the Sun sign, each sign has two trine signs, two sextile signs, one opposite sign and two square signs. The opposite sign complements yours but often pulls the other way; the squares are where two rhythms clash easily and need clearer talk.

Aries (Fire): trine Leo, Sagittarius; sextile Gemini, Aquarius; opposition Libra; square Cancer, Capricorn.
Taurus (Earth): trine Virgo, Capricorn; sextile Cancer, Pisces; opposition Scorpio; square Leo, Aquarius.
Gemini (Air): trine Libra, Aquarius; sextile Aries, Leo; opposition Sagittarius; square Virgo, Pisces.
Cancer (Water): trine Scorpio, Pisces; sextile Taurus, Virgo; opposition Capricorn; square Aries, Libra.
Leo (Fire): trine Aries, Sagittarius; sextile Gemini, Libra; opposition Aquarius; square Taurus, Scorpio.
Virgo (Earth): trine Taurus, Capricorn; sextile Cancer, Scorpio; opposition Pisces; square Gemini, Sagittarius.
Libra (Air): trine Gemini, Aquarius; sextile Leo, Sagittarius; opposition Aries; square Cancer, Capricorn.
Scorpio (Water): trine Cancer, Pisces; sextile Virgo, Capricorn; opposition Taurus; square Leo, Aquarius.
Sagittarius (Fire): trine Aries, Leo; sextile Libra, Aquarius; opposition Gemini; square Virgo, Pisces.
Capricorn (Earth): trine Taurus, Virgo; sextile Scorpio, Pisces; opposition Cancer; square Aries, Libra.
Aquarius (Air): trine Gemini, Libra; sextile Aries, Sagittarius; opposition Leo; square Taurus, Scorpio.
Pisces (Water): trine Cancer, Scorpio; sextile Taurus, Capricorn; opposition Virgo; square Gemini, Sagittarius.

Why one pair of Sun signs is not enough

A zodiac sign is only the Sun's position. Inti Soul's compatibility tool measures the real angles between the two charts' planets in degrees: one person's Sun to the other's Moon and the two Moons together give the Soul dimension; Venus to Mars gives Passion; the two Mercurys and the two Suns give Mind. The engine scores the trine highest, then the sextile, then the conjunction; the opposition and the square score below two planets that form no aspect at all — and an aspect only counts when the planets are within 5° to 8° of it. That is why two people with the same pair of signs can still get very different results.

How well two specific people match

The compatibility tool takes both people's birth dates, names and genders, sets four systems side by side — Bazi, Zi Wei, astrology and numerology — and returns a compatibility score with a five-dimension map: Soul, Passion, Mind, Values, Destiny. Astrology is only one of those four; birth time is optional, but without it the astrology layer is weighted down and the reading states a lower confidence.

Boundaries when using astrology for love

Do not use zodiac signs to justify control or jealousy, or to decide to break up or marry. If a relationship involves violence, control or a risk to your safety, seek practical support from trusted people or professionals — astrology does not replace relationship counselling or decisions to protect yourself.

Explore whether two people are compatible

Enter both people's birth dates, names and genders so Inti Soul can set their data side by side, give a compatibility score and suggest questions to talk through. Free, no account required.

Explore compatibility

For self-understanding and reflection — not a verdict.

Frequently asked questions

Are two people of the same sign compatible?

Two people of the same sign stand at a conjunction (0°): they read each other's rhythm easily, but they can also share a blind spot. Inti Soul's compatibility engine scores the conjunction below the trine and the sextile, but above the opposition and the square.

Do incompatible signs mean people should not love each other?

No. Zodiac signs are only a symbolic layer; relationships depend on communication, respect, safety, and daily choices.

Is zodiac compatibility different for love and for friendship?

The aspect table is the same: a trine, sextile, opposition or square describes the rhythm between two people, whether partners, friends or colleagues. What differs is the question you bring to that relationship.

Does Inti Soul read the other person's mind?

No. Readings only support reflection on patterns and questions for dialogue; they do not assert another person's secret thoughts or intentions.