How does zodiac compatibility work?

In traditional Western astrology, zodiac compatibility compares two sun signs by element (fire, earth, air, water) and modality (cardinal, fixed, mutable). Those two building blocks produce the natural affinities and frictions between signs. This calculator scores all 144 pairings, offered for reflection rather than prediction.

The whole zodiac

Compatibility Grid

Click any cell to see the full compatibility analysis for that pairing.

	♈	♉	♊	♋	♌	♍	♎	♏	♐	♑	♒	♓
♈	87	54	80	44	88	60	72	40	85	57	75	46
♉	62	90	55	76	55	86	52	67	67	88	49	85
♊	81	53	83	68	75	40	85	57	73	54	86	60
♋	43	75	62	84	46	82	57	92	50	73	64	90
♌	88	54	78	48	90	62	75	44	87	66	70	49
♍	66	86	49	80	62	86	54	74	60	85	50	67
♎	72	51	85	54	70	55	91	54	81	44	84	72
♏	47	70	66	92	36	74	52	90	49	73	57	88
♐	85	67	76	47	87	55	77	46	97	65	76	44
♑	57	88	58	70	58	85	45	78	65	83	47	80
♒	75	48	86	58	75	52	84	60	74	53	90	59
♓	54	87	52	90	48	68	67	88	43	86	69	91

Low

Moderate

Good

High

Excellent

The twelve signs

Browse by Sign

Open a sign to read its element, ruler, and full compatibility profile.

AriesMar 21 - Apr 19 · Fire cardinal, ruled by Mars TaurusApr 20 - May 20 · Earth fixed, ruled by Venus GeminiMay 21 - Jun 20 · Air mutable, ruled by Mercury CancerJun 21 - Jul 22 · Water cardinal, ruled by Moon LeoJul 23 - Aug 22 · Fire fixed, ruled by Sun VirgoAug 23 - Sep 22 · Earth mutable, ruled by Mercury LibraSep 23 - Oct 22 · Air cardinal, ruled by Venus ScorpioOct 23 - Nov 21 · Water fixed, ruled by Pluto SagittariusNov 22 - Dec 21 · Fire mutable, ruled by Jupiter CapricornDec 22 - Jan 19 · Earth cardinal, ruled by Saturn AquariusJan 20 - Feb 18 · Air fixed, ruled by Uranus PiscesFeb 19 - Mar 20 · Water mutable, ruled by Neptune

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The tradition

How Zodiac Compatibility Works

In traditional Western astrology, compatibility between two people begins with comparing their sun signs, the zodiac sign determined by your date of birth. Each sign belongs to one of four elements (fire, earth, air, water) and one of three modalities (cardinal, fixed, mutable). These building blocks create natural affinities and tensions between signs. Fire and air signs tend to energize each other, while earth and water signs share a nurturing harmony. Same-element pairings bring deep understanding, while cross-element pairings bring complementary growth.

Beyond the sun

Beyond Sun Signs

Sun-sign compatibility is a meaningful starting point, but the full picture of astrological compatibility, called synastry, involves comparing both complete birth charts. Moon signs reveal emotional compatibility, Venus signs show love languages, and Mars signs indicate how you handle conflict and desire. Our calculator provides the sun-sign foundation; for the complete picture, explore our full Birth Chart and Synastry tools.

Stones for the pairing

Crystals for Relationship Harmony

In the crystal healing tradition, specific stones support different aspects of partnership. Rose Quartz opens the heart to love and compassion. Amazonite encourages honest, loving communication. Black Tourmaline creates protective boundaries within relationships. Each compatibility reading includes crystal recommendations tailored to the specific dynamic between your signs, supporting the strengths and gently addressing the challenges unique to your pairing.

Free Guide

A method, not a lookup

Astrid Moon's free guide to chart interpretation, written as a procedure you can repeat on any chart, including Whole Sign against Placidus and tropical against sidereal.

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Birth Chart

Full natal chart with crystal recommendations.

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Love Calculator

Numerological name compatibility test.

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Life Path Calculator

Calculate your numerology life path.

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Birthstone Finder

Find your personal crystal by month or sign.

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	♈	♉	♊	♋	♌	♍	♎	♏	♐	♑	♒	♓
♈	87	54	80	44	88	60	72	40	85	57	75	46
♉	62	90	55	76	55	86	52	67	67	88	49	85
♊	81	53	83	68	75	40	85	57	73	54	86	60
♋	43	75	62	84	46	82	57	92	50	73	64	90
♌	88	54	78	48	90	62	75	44	87	66	70	49
♍	66	86	49	80	62	86	54	74	60	85	50	67
♎	72	51	85	54	70	55	91	54	81	44	84	72
♏	47	70	66	92	36	74	52	90	49	73	57	88
♐	85	67	76	47	87	55	77	46	97	65	76	44
♑	57	88	58	70	58	85	45	78	65	83	47	80
♒	75	48	86	58	75	52	84	60	74	53	90	59
♓	54	87	52	90	48	68	67	88	43	86	69	91

	♈	♉	♊	♋	♌	♍	♎	♏	♐	♑	♒	♓
♈	87	54	80	44	88	60	72	40	85	57	75	46
♉	62	90	55	76	55	86	52	67	67	88	49	85
♊	81	53	83	68	75	40	85	57	73	54	86	60
♋	43	75	62	84	46	82	57	92	50	73	64	90
♌	88	54	78	48	90	62	75	44	87	66	70	49
♍	66	86	49	80	62	86	54	74	60	85	50	67
♎	72	51	85	54	70	55	91	54	81	44	84	72
♏	47	70	66	92	36	74	52	90	49	73	57	88
♐	85	67	76	47	87	55	77	46	97	65	76	44
♑	57	88	58	70	58	85	45	78	65	83	47	80
♒	75	48	86	58	75	52	84	60	74	53	90	59
♓	54	87	52	90	48	68	67	88	43	86	69	91

Compatibility Grid

Browse by Sign

How Zodiac Compatibility Works

Beyond Sun Signs

Crystals for Relationship Harmony

A method, not a lookup

Explore More Tools

Birth Chart

Love Calculator

Life Path Calculator

Birthstone Finder

	♈	♉	♊	♋	♌	♍	♎	♏	♐	♑	♒	♓
♈	87	54	80	44	88	60	72	40	85	57	75	46
♉	62	90	55	76	55	86	52	67	67	88	49	85
♊	81	53	83	68	75	40	85	57	73	54	86	60
♋	43	75	62	84	46	82	57	92	50	73	64	90
♌	88	54	78	48	90	62	75	44	87	66	70	49
♍	66	86	49	80	62	86	54	74	60	85	50	67
♎	72	51	85	54	70	55	91	54	81	44	84	72
♏	47	70	66	92	36	74	52	90	49	73	57	88
♐	85	67	76	47	87	55	77	46	97	65	76	44
♑	57	88	58	70	58	85	45	78	65	83	47	80
♒	75	48	86	58	75	52	84	60	74	53	90	59
♓	54	87	52	90	48	68	67	88	43	86	69	91