Synastry Chart

Create Your Synastry Chart

To create your free synastry chart enter two names, places of birth (or nearest city), and dates of birth below. Entering a birth time is optional, but including it will provide a more accurate synastry chart. When a time isn't provided, the time defaults to noon.

What is a Synastry Chart?

Think of a map of the cosmos that is a snapshot of the exact planetary coordinates of when you were born. Now when we overlay another individual's map over your map, we can visually see where their planets were located in relation to yours - that is the basis of a synastry chart. Basically, it is overlaying two individuals’ birth charts and examines the aspects between the two charts.

Visually a synastry chart looks exactly like a birth chart - a 360-degree wheel divided into 12 sections. The only difference is that there are twice as many elements being charted. In a synastry chart, an aspect is a geometric relationship between the two sets of planets. An example of aspect shape includes a square, trine, conjunction, and more. Each aspect shape produces a different meaning.

Synastry charts and composite charts are similar in that they both explore relationships. Synastry charts are used to examine relationships between two people or, more specifically, how they may affect each other individually. From that, an astrologer can use the chart to interpret the character and dynamic of the relationship.

Modern & accurate

Astro-Charts was created to usher in fresh and fun energy to astrology on the internet. Our birth charts(natal charts) balance a modern look combined with up-to-date and accurate data from planetary databases created by NASA. We do all the calculations for your birth chart(natal chart) and handle daylight savings and other nuanced location situations.

Easy to customize

We give you the power to customize your birth chart(natal chart) to your liking within the settings area: custom orb limits, multiple house systems, sidereal calculation, declinations, and show/hide any planet, asteroids, or aspect. We also are open to suggestions for more features that you may find useful.

Display chart patterns

Astro-Charts make it easy to discover the unique and interesting chart patterns in your birth chart(natal chart). There are over 17 different chart patterns we look for in your chart. Some common chart patterns include Yod, t-square, stellium, rectangle, grand-cross, grand trine, castle, Star of David, and many more.

Calculate special features

We wanted to give you quick bite-sized facts about your birth chart (natal chart). These are highlighted in our special features section of your chart. Some of these interesting facts include the moon phase when you were born, the dominant element of your chart, the dominant planet of your chart, and much much more.

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