Create Your Synastry Chart
Professional astrology charts with NASA-grade accuracy. Simple, playful and beautifully detailed.
Features
Understanding Your Synastry Charts
All Chart Types in One Dashboard
Input details once. Access synastry, composite, and all chart types from one dashboard.
Emma & James
Synastry Chart
Birth Place: London, UK
House System: Placidus
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Inter-Aspect Grid
Every cross-chart aspect between two people mapped in a clean, scannable grid.
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Person 1 Venus Trine Person 2 Mars
Orb: 0.00°
NASA-Accurate Calculations
Swiss Ephemeris precision for every synastry aspect we calculate.
Interactive Synastry Exploration
Click any planet to see its cross-chart aspects and compatibility patterns.
Emma & James
Synastry Chart
Birth Place: London, UK
House System: Placidus
Emma's Saturn in Capricorn in 10th house
Rules Emma's 10th, 11th Houses
Aspects
Explore Our Curated Series
Learn more
Venus Conjunct Mars in Synastry: Who Feels it More?
Explore the magnetic attraction and passionate dynamics when Venus meets Mars in synastry - one of the most potent aspects for romantic chemistry.
Moon Conjunct Mars in Synastry: How the Signs Shape the Connection
Discover the emotional intensity and instinctive connection when Moon meets Mars in synastry - a powerful aspect that ignites deep feelings and protective instincts.
Explaining the Lot (or Part) of Fortune
Discover the Lot of Fortune in your birth chart — a hidden key to understanding luck, health, and material prosperity in Hellenistic astrology.
Built for Learners
Accessible, Without Losing the Depth
YES. Accuracy Matters to us.
We invested in a Swiss Ephemeris license to ensure charts we calculate are NASA accurate. Because it matters.
Made Useful.
For All Levels.
Whether it's birth chart or transit, every chart is designed to be intuitive from day one and powerful when you need it.
Customize As and When You Need.
House systems, orbs, asteroids - adjust or leave the defaults. There when you want them, out of the way when you don't.
Simple Surface.
Deep Core.
Start with clean, intuitive charts. Go deeper with transits, synastry, solar returns and more - all from one dashboard.
The Complete Toolkit
Our Growing Tools Library
Professional Grade - Powered by Swiss Ephemeris
Customizable House Systems
Advanced Arabic Parts & Asteroids
All-in-One Dashboard
Enter Both Birth Details
Provide birth data for both partners - date, time, and location. Accurate birth times enable precise synastry chart calculations for relationship compatibility analysis.
Compare Birth Charts
Our synastry chart calculator uses Swiss Ephemeris to analyze planetary aspects between two natal charts, revealing relationship compatibility patterns.
Interactive Synastry Chart
Click any planet to see inter-aspects between partners. Our interactive synastry chart makes understanding relationship compatibility simple and easy to explore.
The How-To
Getting Started with Synastry Charts
Compare two birth charts in three simple steps. Our synastry chart calculator reveals relationship compatibility with NASA-accurate planetary aspect analysis.
Questions
and Answers
What is a synastry chart?
A synastry chart compares two birth charts to analyze relationship compatibility. It reveals how your planets interact with your partner's planets through aspects, showing strengths, challenges, and the dynamics of your relationship.
How accurate is synastry for relationship compatibility?
Our synastry calculator uses NASA-accurate planetary positions and Swiss Ephemeris calculations. While synastry provides valuable insights into relationship dynamics, compatibility depends on many factors beyond astrology.
Do both people need exact birth times for synastry?
Exact birth times provide the most accurate synastry analysis, including house overlays and ascendant aspects. However, you can still generate a meaningful synastry chart without birth times - planet-to-planet aspects will remain accurate.
What makes AskNova's synastry calculator interactive?
Click any planet to see all aspects between the two charts. Our interactive synastry calculator lets you explore relationship compatibility in detail, with instant aspect analysis and interpretations.
Is the synastry chart calculator free?
Yes! Our synastry calculator is 100% free with no signup required. Generate unlimited relationship compatibility charts with professional-grade accuracy.
Is my relationship data private?
Absolutely. All birth data and synastry information is stored securely and never shared. You can delete your data anytime.
AskNova
Professional astrology charts with NASA-grade accuracy. Simple, playful and beautifully detailed.
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