Your free synastry chart calculator
Two birth charts compared aspect by aspect, read in plain words.
Find out with a free, in-depth synastry report tailored to reveal the unique energies of your relationship. Enter details below to create your free synastry chart and explore how your stars align for a deeper, more meaningful relationship.
filled: Chart Aoutlined: Chart B
- Chart A's SunconjunctionChart B's Moon0°02′
- Chart A's MercuryoppositionChart B's Sun0°49′
- Chart A's SunoppositionChart B's Mercury0°58′
Your report lists the tightest aspects between your two charts, with their orbs.
An illustration. Yours is drawn from both birth dates, times and places.
What you'll get
Five cards, each tied to an aspect between your two charts. Enter both birth details and they become yours.
After you compare your charts
Your tightest link
The tightest link between your two charts, and what it means for how you meet each other.
Drag or tap the card, or use the arrow keys.
Swipe or tap the card.
What is synastry?
Your synastry is the ultimate “Why does love feel so simple at first, but so difficult later?” answer
You and your partner are drawn to each other, but there's so much more to your connection than meets the eye. Maybe you vibe perfectly in some ways, but in others, it feels like you're speaking different languages.
That's where Synastry comes in. Synastry is an in-depth astrological technique focused on relationships that go beyond comparing sun signs. This overlay of your birth charts shows how the planets and positions in your individual birth charts relate, interact, and impact each other.
When your charts are unified, the two charts, analyze how the planets align to form powerful geometric angles called aspects. Instead of waiting for your partner to change, these personalized insights guide you on how to become the partner you aspire to be loved by.
Tap a planet to see its aspects.
Chart A: Sun 19°00′ Libra conjunction Chart B: Moon 18°58′ Libra · 0°02′
Two planets in the same place: what one of you does, the other feels straight away.
A first chart inside, a second chart's planets outside. Pick a pairing to draw its line.
Why does Synastry matter?
Your synastry chart helps you design a love story that's uniquely yours!
Forget swiping and settling. Your Synastry Chart reveals how YOUR unique energy dances with someone else's. It's the real deal beyond basic compatibility.
Love Compatibility isn't about simple labels or whether you'll “work.” It explores the electrifying interplay of your energies: where you ignite sparks, where you challenge each other, where you build an unbreakable bond.
Synastry helps you build a love that grows stronger with every challenge and embrace a love that's AUTHENTICALLY, UNDENIABLY yours. Isn't that the kind of fulfilling partnership we all crave?
The aspects between two charts, counted by type. Your report counts yours.
How to read a synastry chart
Synastry compares two birth charts by mapping the aspects each person's planets make to the other's, revealing attraction, emotional needs and long-term compatibility. The strongest signals come from the personal planets (Sun, Moon, Venus, Mars) and where one person's planets fall in the other's houses.
Key synastry aspects
- Sun and MoonHarmonious
- Core compatibility of ego and emotions; a classic marriage aspect
- Venus and MarsHarmonious
- Romantic and sexual chemistry, mutual attraction
- Moon and VenusHarmonious
- Emotional warmth, affection and easy tenderness
- Moon and MoonHarmonious
- Shared emotional style and instinctive understanding
- Sun and VenusHarmonious
- Warmth, admiration and enjoyment of each other
- Mars and MarsMixed
- Similar drive and passion; can spark or clash
- Venus and SaturnMixed
- Commitment and loyalty, but can feel restrictive
- Sun and SaturnChallenging
- Stability and duty, sometimes heaviness or control
- Venus and PlutoChallenging
- Intense, magnetic, transformative attraction
Synastry house overlays
- 1st house
- Instant attraction, strong sense of “I see you”
- 4th house
- Feeling of home, family and emotional safety
- 5th house
- Romance, fun, dating, creativity and children
- 7th house
- Partnership, commitment and long-term potential
- 8th house
- Intimacy, deep bonding, shared resources
- 10th house
- Public couple, shared goals and reputation
The five main aspects, each with a real example between the two charts.
Giving your all, but still feels like something is missing?
- You are not alone
- This could be the turning point for your love story to truly blossom!
- Empower yourself with insights and build a love that fills you up, not leaves you empty
The Sun, Moon and Rising signs of two charts side by side, with the report's match for each. Yours comes with your report.
Stop wondering “What is wrong with my love life?” Your synastry has answers
Elemental compatibility
Why do we argue like an old married couple?
Your mix of elements may be why. See whether it gives your relationship warmth and spark, or keeps you rubbing each other the wrong way.
Safety needs (Moon)
Why do I feel anxious even when things are good?
Your Moons show what each of you needs to feel emotionally safe. Know those needs, and you can make a home together where you both can rest.
The Vertex
Does our connection have a deeper purpose?
Your Vertex speaks to fate, karma and the less obvious reasons you were drawn together, including traits that attract you to each other without either of you noticing.
Validation (Venus)
Why doesn't my partner get me? Do they even care?
You may simply show love in different ways. Your Venus placements show how each of you gives and receives affection, so you can learn each other's language.
Aspects analysis
Why am I so drawn to this person, even when it's hard?
Your aspects show the pull between you, where the friction comes from, and where the relationship can help you both grow.
The Descendant
Why do I always pick the wrong ones?
Your Descendant shows the patterns that keep repeating in who you choose. See what you want without realising it next to what you think you want, and choose partners who help you grow.
How much of each chart is fire, earth, air and water.
It's like a wise friend who sees what you sometimes can't
Get brutally honest (but helpful) insights into your connections. This wise friend doesn't judge or take sides.
Still wishing your partner would just “get it”? Spoiler alert: they won't
Ask yourself: are you willing to better yourself for who they are? Imagine finally feeling what it's like to truly belong to someone. Synastry brings you the feeling of “coming home”, where you're fully cherished and supported! Could this be your love story?
- Explore the astrological forces shaping your bond
- Recognize karmic patterns to overcome together
- Personal remedies & affirmations to grow closer
- Your tightest link
- Where it comes easily
- Where you rub each other
- Your Big 3 side by side
Questions about the synastry chart calculator
Short answers. The full reading comes with your two charts.
A synastry chart compares two people's birth charts by mapping the aspects each person's planets make to the other's. It reveals attraction, emotional needs, friction points and long-term compatibility between two people.
Enter the birth date, time and place for both people. The calculator builds both natal charts and overlays them, showing the inter-aspects between your planets and where each person's planets fall in the other's houses.
The planet-to-planet aspects still work without exact times, but the house overlays and Moon placements become approximate. For the most accurate reading, use exact birth times for both people.
The personal planets carry the most weight: the Sun and Moon (identity and emotions), Venus (love and affection) and Mars (desire and drive). Contacts between these are the heart of relationship chemistry.
The 1st, 5th, 7th and 8th houses are the most telling. When someone's planets land in your 5th (romance), 7th (partnership) or 8th (intimacy), the connection tends to feel significant.
Synastry compares two separate charts to each other. A composite chart merges both charts into a single new chart representing the relationship itself as its own entity. Synastry shows how you affect each other; the composite shows the relationship's own character.
Synastry is a well-established astrological technique, and with accurate birth data it reliably highlights the dynamics between two people. It describes tendencies and potentials rather than guaranteeing outcomes.
Love compatibility report
Your synastry written out as a PDF to keep: every aspect, house overlay and remedy for the two of you.
85+ pages
