Relationship charts
Synastry chart calculator
Compare the planets in two birth charts by exact angular distance, then read the contacts and directional house overlays.
Example: Synastry chart
Person 1: Natal chart: Sun in Taurus, Moon in Capricorn, Leo rising. Person 2: Natal chart: Sun in Leo, Moon in Taurus, Aquarius rising.
Tropical zodiac; whole-sign houses; 1× aspect orbs.
Person 1
Natal chart: Sun in Taurus, Moon in Capricorn, Leo rising.
| Point | Position | Motion | Possible signs |
|---|---|---|---|
| Sun | Taurus 24° 17′ | Direct | Taurus |
| Moon | Capricorn 25° 52′ | Direct | Capricorn |
| Mercury | Taurus 8° 01′ | Retrograde | Taurus |
| Venus | Aries 12° 41′ | Direct | Aries |
| Mars | Pisces 18° 15′ | Direct | Pisces |
| Jupiter | Cancer 9° 31′ | Direct | Cancer |
| Saturn | Capricorn 25° 15′ | Retrograde | Capricorn |
| Uranus | Capricorn 9° 11′ | Retrograde | Capricorn |
| Neptune | Capricorn 14° 21′ | Retrograde | Capricorn |
| Pluto | Scorpio 16° 10′ | Retrograde | Scorpio |
| Mean north node | Aquarius 11° 20′ | Retrograde | Aquarius |
| True north node | Aquarius 10° 15′ | Retrograde | Aquarius |
| Mean Black Moon | Scorpio 21° 25′ | Direct | Scorpio |
| Osculating Black Moon | Sagittarius 6° 45′ | Direct | Sagittarius |
| Ceres | Cancer 15° 08′ | Direct | Cancer |
| Pallas | Taurus 28° 23′ | Direct | Taurus |
| Juno | Scorpio 15° 39′ | Retrograde | Scorpio |
| Vesta | Aries 21° 35′ | Direct | Aries |
| Psyche | Taurus 1° 16′ | Direct | Taurus |
| Eros | Aries 13° 53′ | Direct | Aries |
| Chiron | Cancer 13° 12′ | Direct | Cancer |
| Asteroid Lilith | Aquarius 9° 04′ | Direct | Aquarius |
| Ascendant | Leo 7° 31′ | — | Leo |
| Descendant | Aquarius 7° 31′ | — | Aquarius |
| Midheaven | Aries 16° 31′ | — | Aries |
| IC | Libra 16° 31′ | — | Libra |
| Vertex | Sagittarius 25° 31′ | — | Sagittarius |
Person 2
Natal chart: Sun in Leo, Moon in Taurus, Aquarius rising.
| Point | Position | Motion | Possible signs |
|---|---|---|---|
| Sun | Leo 28° 08′ | Direct | Leo |
| Moon | Taurus 22° 28′ | Direct | Taurus |
| Mercury | Leo 9° 39′ | Direct | Leo |
| Venus | Virgo 16° 49′ | Direct | Virgo |
| Mars | Gemini 16° 32′ | Direct | Gemini |
| Jupiter | Virgo 19° 09′ | Direct | Virgo |
| Saturn | Aquarius 14° 08′ | Retrograde | Aquarius |
| Uranus | Capricorn 14° 28′ | Retrograde | Capricorn |
| Neptune | Capricorn 16° 32′ | Retrograde | Capricorn |
| Pluto | Scorpio 20° 16′ | Direct | Scorpio |
| Mean north node | Sagittarius 27° 27′ | Retrograde | Sagittarius |
| True north node | Sagittarius 28° 41′ | Retrograde | Sagittarius |
| Mean Black Moon | Aquarius 23° 43′ | Direct | Aquarius |
| Osculating Black Moon | Pisces 11° 07′ | Direct | Pisces |
| Ceres | Capricorn 28° 07′ | Retrograde | Capricorn |
| Pallas | Sagittarius 19° 09′ | Direct | Sagittarius |
| Juno | Gemini 15° 17′ | Direct | Gemini |
| Vesta | Libra 17° 39′ | Direct | Libra |
| Psyche | Virgo 28° 44′ | Direct | Virgo |
| Eros | Leo 8° 27′ | Direct | Leo |
| Chiron | Leo 15° 14′ | Direct | Leo |
| Asteroid Lilith | Virgo 5° 51′ | Direct | Virgo |
| Ascendant | Aquarius 7° 47′ | — | Aquarius |
| Descendant | Leo 7° 47′ | — | Leo |
| Midheaven | Scorpio 28° 58′ | — | Scorpio |
| IC | Taurus 28° 58′ | — | Taurus |
| Vertex | Virgo 5° 58′ | — | Virgo |
Wheel numbers: 1 Sun · 2 Moon · 3 Mercury · 4 Venus · 5 Mars · 6 Jupiter · 7 Saturn · 8 Uranus · 9 Neptune · 10 Pluto. Filled marks: Person 1; outlined marks: Person 2.
Aspect grid and readings
Open the planet-by-planet aspect matrix
Rows belong to Person 1; columns belong to Person 2. Select a contact to read that exact pair below. A dash means no selected aspect fits the current orb.
| Person 1 / Person 2 | Sun | Moon | Mercury | Venus | Mars | Jupiter | Saturn | Uranus | Neptune | Pluto |
|---|---|---|---|---|---|---|---|---|---|---|
| Sun | — | — | — | — | — | — | ||||
| Moon | — | — | — | — | — | — | — | — | ||
| Mercury | — | — | — | — | — | — | — | — | — | |
| Venus | — | — | — | — | — | |||||
| Mars | — | — | — | — | ||||||
| Jupiter | — | — | — | — | — | — | — | |||
| Saturn | — | — | — | — | — | — | — | — | ||
| Uranus | — | — | — | — | — | — | — | |||
| Neptune | — | — | — | — | ||||||
| Pluto | — | — |
Sun and Sun square
Person 1’s Sun brings identity, purpose and recognition; Person 2’s Sun brings identity, purpose and recognition. The ninety-degree relationship brings two themes into friction. Compare their different priorities and agree on a way to make room for both.
What makes each person feel seen and appreciated? What makes each person feel seen and appreciated?
1 contacts in the selected view. Separation is the shortest angle; orb is the distance from the exact aspect angle.
| Person 1 | Aspect | Person 2 | Separation | Orb |
|---|---|---|---|---|
| Sun | Square | Sun | 93.84° | 3.84° |
Sun square Sun · 3.84° orb
Person 1’s Sun brings identity, purpose and recognition; Person 2’s Sun brings identity, purpose and recognition. The ninety-degree relationship brings two themes into friction. Compare their different priorities and agree on a way to make room for both.
What makes each person feel seen and appreciated? What makes each person feel seen and appreciated?
House overlays
| Direction | Planet | Partner’s house | House theme |
|---|---|---|---|
| Person 1 → Person 2 | Sun | 4 | Home and roots |
| Person 1 → Person 2 | Moon | 12 | Privacy and unspoken experience |
| Person 1 → Person 2 | Mercury | 4 | Home and roots |
| Person 1 → Person 2 | Venus | 3 | Conversation and everyday exchange |
| Person 1 → Person 2 | Mars | 2 | Resources and values |
| Person 1 → Person 2 | Jupiter | 6 | Daily work and practical care |
| Person 1 → Person 2 | Saturn | 12 | Privacy and unspoken experience |
| Person 1 → Person 2 | Uranus | 12 | Privacy and unspoken experience |
| Person 1 → Person 2 | Neptune | 12 | Privacy and unspoken experience |
| Person 1 → Person 2 | Pluto | 10 | Public aims and responsibility |
| Person 1 → Person 2 | Mean north node | 1 | Self and approach |
| Person 1 → Person 2 | True north node | 1 | Self and approach |
| Person 1 → Person 2 | Mean Black Moon | 10 | Public aims and responsibility |
| Person 1 → Person 2 | Osculating Black Moon | 11 | Friendship and shared future |
| Person 1 → Person 2 | Ceres | 6 | Daily work and practical care |
| Person 1 → Person 2 | Pallas | 4 | Home and roots |
| Person 1 → Person 2 | Juno | 10 | Public aims and responsibility |
| Person 1 → Person 2 | Vesta | 3 | Conversation and everyday exchange |
| Person 1 → Person 2 | Psyche | 4 | Home and roots |
| Person 1 → Person 2 | Eros | 3 | Conversation and everyday exchange |
| Person 1 → Person 2 | Chiron | 6 | Daily work and practical care |
| Person 1 → Person 2 | Asteroid Lilith | 1 | Self and approach |
| Person 2 → Person 1 | Sun | 1 | Self and approach |
| Person 2 → Person 1 | Moon | 10 | Public aims and responsibility |
| Person 2 → Person 1 | Mercury | 1 | Self and approach |
| Person 2 → Person 1 | Venus | 2 | Resources and values |
| Person 2 → Person 1 | Mars | 11 | Friendship and shared future |
| Person 2 → Person 1 | Jupiter | 2 | Resources and values |
| Person 2 → Person 1 | Saturn | 7 | Partnership and agreements |
| Person 2 → Person 1 | Uranus | 6 | Daily work and practical care |
| Person 2 → Person 1 | Neptune | 6 | Daily work and practical care |
| Person 2 → Person 1 | Pluto | 4 | Home and roots |
| Person 2 → Person 1 | Mean north node | 5 | Play and creative expression |
| Person 2 → Person 1 | True north node | 5 | Play and creative expression |
| Person 2 → Person 1 | Mean Black Moon | 7 | Partnership and agreements |
| Person 2 → Person 1 | Osculating Black Moon | 8 | Shared resources and trust |
| Person 2 → Person 1 | Ceres | 6 | Daily work and practical care |
| Person 2 → Person 1 | Pallas | 5 | Play and creative expression |
| Person 2 → Person 1 | Juno | 11 | Friendship and shared future |
| Person 2 → Person 1 | Vesta | 3 | Conversation and everyday exchange |
| Person 2 → Person 1 | Psyche | 2 | Resources and values |
| Person 2 → Person 1 | Eros | 1 | Self and approach |
| Person 2 → Person 1 | Chiron | 1 | Self and approach |
| Person 2 → Person 1 | Asteroid Lilith | 2 | Resources and values |
1 · Self and approach
The planet person meets the house person’s outward style and first response. Compare how each person takes initiative and how that initiative is received.
2 · Resources and values
The overlay turns attention toward possessions, spending, personal security and what each person values. Discuss gifts, shared costs and the distinction between care and obligation.
3 · Conversation and everyday exchange
The house person’s daily conversations, learning and local routines become the setting for the planet theme. Compare listening habits and how you make small decisions together.
4 · Home and roots
The overlay places the planet theme in the house person’s private life, family history and sense of belonging. Talk about privacy, household rhythms and what makes a place feel like home.
5 · Play and creative expression
The planet theme meets the house person’s pleasure, creative projects and playful attention. Compare how you make space for enjoyment and how you share the spotlight.
6 · Daily work and practical care
The emphasis falls on ordinary tasks, routines and the division of effort. Make expectations about help, consistency and shared chores explicit.
7 · Partnership and agreements
The house person encounters the planet through one-to-one relationships and negotiated roles. Compare what each person asks of a partner and how you decide what is fair.
8 · Shared resources and trust
The overlay highlights jointly held resources, vulnerability and the conditions of sharing. Name boundaries around money, disclosure and decisions that affect both people.
9 · Beliefs and exploration
The planet theme enters the house person’s wider view of life: learning, travel and personal convictions. Compare how you handle differences in belief while remaining curious.
10 · Public aims and responsibility
The overlay relates to the house person’s visible commitments and ambitions. Discuss recognition, support and the place of career decisions in shared plans.
11 · Friendship and shared future
The planet theme connects with groups, friendship networks and collective goals. Compare the communities you value and how you make future plans together.
12 · Privacy and unspoken experience
The house person’s private or less easily expressed experience provides the setting. Leave room for quiet, ask before interpreting silence and make hidden expectations speakable.
Dating reading
Explore first expectations, communication and the ways you enjoy spending time together.
- Mercury square Mercury: Person 1’s Mercury brings speech, listening and the exchange of ideas; Person 2’s Mercury brings speech, listening and the exchange of ideas. The ninety-degree relationship brings two themes into friction. Compare their different priorities and agree on a way to make room for both.
- Venus trine Mercury: Person 1’s Venus brings affection, pleasure and shared values; Person 2’s Mercury brings speech, listening and the exchange of ideas. The one-hundred-and-twenty-degree relationship connects themes through a common element. The reading emphasizes ease and familiar expression; discuss how to keep that ease active.
- Sun square Sun: Person 1’s Sun brings identity, purpose and recognition; Person 2’s Sun brings identity, purpose and recognition. The ninety-degree relationship brings two themes into friction. Compare their different priorities and agree on a way to make room for both.
- What pace feels comfortable to each of you?
- Which gestures communicate interest clearly?
- What would you like to know before making assumptions?