How zodiac compatibility works

Sign categories, whole-sign distance, and a relationship lens shape each comparison.

01: Choose two signs and one relationship lens.
02: Compare fixed reference categories and wheel distance.
03: Explore relationship themes for the selected lens.

What the tool uses

Choose a first sign, a second sign, and a romance, friendship, or work lens. The month-and-day finder can identify a conventional sign. An exact natal Sun position uses a birth year, time, location, and ephemeris.

Comparison layers

Elements: Fire, earth, air, or water.
Modalities: Cardinal, fixed, or mutable.
Polarity: Traditional active or receptive classification.
Traditional rulers: The classical planetary ruler of each sign.
Whole-sign relationship: The shortest distance between two signs on the twelve-sign wheel.
Relationship lens: Romance, friendship, or work gives the reading its practical context.

Twelve signs create 78 unique unordered pairs, including 12 same-sign pairs. Swapping the order keeps the pair's whole-sign facts unchanged.

Elements, modalities, polarities, and traditional rulers describe the signs. The shortest wheel distance identifies their whole-sign relationship. The selected lens organizes themes for affection, shared time, or collaboration.

Reference sources

Choose the right tool

Use the comparator when you already know both conventional Sun signs.
Use the month-and-day finder when one sign is still unknown.
For planetary degrees, houses, and aspects, use a full natal chart.

How relationship lenses work

The same pair facts stay visible in every reading. Changing the lens shifts the practical questions: affection and emotional rhythm for romance, shared time and mutual care for friendship, or roles and collaboration for work.

Strengths, friction points, communication, repair, and reflection prompts are organized around that selected context.

Sun signs and full synastry

A full synastry reading also considers the Moon, Ascendant, planets, houses, and degree-based aspects.
Exact Sun-sign boundaries near a cusp vary by year, time, and location. The month-and-day helper flags the dates around each conventional changeover.

Example: Taurus and Scorpio

Taurus and Scorpio

Calculated facts

Whole-sign relationship: opposite signs
Nominal sign-position separation: 180° between whole-sign positions; exact natal aspects use actual Sun positions
Elements: earth and water
Modalities: fixed and fixed

Open the Taurus and Scorpio comparison result