Composite Chart Calculator

Create a composite chart by calculating the midpoint between two people's planets. This reveals the essence of your relationship as its own entity.

What is a Composite Chart?Unlike synastry (comparing two charts), a composite chart creates a single chart representing the relationship itself - as if your partnership had its own birthday.

Calculate Composite Chart

Enter birth details for both people to reveal your relationship's essence.

1

Person 1

2

Person 2

Understanding Composite Charts

A composite chart is created by calculating the mathematical midpoint between each planet in two people's natal charts. The result is a single chart that describes the relationship itself, independent of either individual.

Think of it as the "birthday chart" of your relationship. While synastry shows how two people interact, the composite reveals the relationship's purpose, challenges, and potential as its own living entity.

What the Composite Chart Reveals

Relationship Purpose

What this relationship is meant to teach you both and accomplish together.

Shared Identity

How you function as a couple - your joint personality and public image.

Dynamic Patterns

Recurring themes, challenges, and growth opportunities in the relationship.

Potential & Destiny

Where the relationship is headed and what it can become.

Composite vs. Synastry

Composite Chart

Shows the relationship as its own entity. Best for understanding "us" - how you function together, relationship dynamics, and joint purpose.

Synastry Chart

Compares two individual charts. Best for understanding "you + me" - how each person affects the other, attractions, and compatibility.

Both techniques are valuable! Many astrologers use them together for a complete relationship picture.

FAQ

Do I need both people's birth times?

Yes, accurate birth times are essential for composite charts because the calculation includes the ascendant (rising sign) and house positions, which change every few minutes.

Can I use composite charts for friendships or business partnerships?

Absolutely! Composite charts work for any significant relationship - romantic, platonic, business, family. They reveal the nature of any bond between two people.

How is the midpoint calculated?

For each planet, we find the mathematical midpoint between its position in person 1's chart and person 2's chart. We always use the shorter arc between the two points to ensure accuracy.