Best Free Birth Chart Compatibility Report & Synastry Chart

Get the most detailed free synastry report online. You'll get a reading of your compatibility and relationship dynamics instantly, with or without birth times.

Jump down below to read why this is the best free astrology compatibility report.

Why is This The Best Free Synastry Report?

• It works both with birth times or with no birth time, so you get a synastry chart even if you don't know the birth time of one or both partners.

• Synastry Aspects To Special Points. In addition to the usual planets, our birth chart compatibility report includes synastry aspects to North Node, Black Moon Lilith, and Chiron. If you add a birth time for either partner, your synastry report will also include synastry aspects to that partner's Moon, Ascendant, Midheaven, Vertex, and Part of Fortune.

Technical Features of This Compatibility/Synastry Report

This free birth chart compatibility report has these sections so you get a complete astrology compatibility reading:

1. Compatibility Aspects Reading (reading of your synastry aspects)
2. Compatibility Aspects List (list of your synastry aspects with orbs)
3. Synastry House Overlays List (only for partners with birth times)
4. Synastry Charts and aspect grid

Detail About Each Section

1. Compatibility Aspects Reading (Synastry Reading)

This section gives a detailed interpretation of your astrology compatibility by describing the planetary aspects between partners (synastry aspects).

If no birth times are given, it will include only synastry aspects between the two partner's Sun, Mercury through Pluto, Chiron, North Node, and Black Moon Lilith. If either partner's birth time is given, it will aslo include any synastry aspects to that partner's Moon, Ascendant, Midheaven, Vertex, and Part of Fortune.

2. Compatibility Aspects List

This is a list of the synastry aspects covered in part 1, showing also the orb of each aspect. This is useful for advanced astrology users who want to see all synastry aspects at a glance.

3. Synastry House Overlays List (only for partners with birth times)

This gives you a list of planets of one partner falling into the houses of the other partner. These are a major part of birth chart compatibility analysis.

If no birth times are given, this section is omitted. If either partner's birth time is given, that partner will get a list of the other person's planets in the houses of the partner with birth time. If both partner's birth times are given, each partner will get a list of the other person's planets in their houses. (To calculate houses for a person, their birth time is needed.)

Synastry house overlays really help you understand how each partner's energy is felt in the relationship. This section gives you a list of your house overlays, without interpretation. (But you can get the full interpretation of your house overlays in the paid Relationship Report; that one requires both partner's birth times).

Option for advanced users: Choice of House System. You can choose your preferred house system for this section to calculate the house overlays. You can pick from Placidus, Whole Sign houses, Meridian, Equal houses, Campanus houses, Porphyry, Alcabitius, Koch, Morinus, Regiomontanus, Topocentric (Polich/Page), or Vehlow houses.

4. Synastry Charts and Aspect Grid

This is the visual part of your compatibility astrology analysis:

• If neither partner's birth time is given: You get a synastry chart with both partner's planets, but no houses, no Moon, Part of Fortune, Vertex, Ascendant, or Midheaven (as these are time-sensitive points that require a birth time). You also get a synastry aspect grid that includes aspects between the two partner's Sun, Mercury through Pluto, Chiron, North Node, and Black Moon Lilith.

• If only 1 partner's birth time is given: You get one synastry chart using that partner's natal chart with the other partner's planets overlaid. You also get a synastry aspect grid that includes the regular aspects listed above, plus aspects to that partner's time-sensitive points (Moon, Ascendant, Midheaven, Vertex, and Part of Fortune) whose birth time was given.

• If both partner's birth times are given: You get two synastry charts, so two individual natal charts with the other partner's planets overlaid. You also get a full aspect grid that includes all aspects, including to both partner's time-sensitive points, for a more complete birth chart compatibility analysis.

Which Zodiac is Used for This Astrology Compatibility Report?

Zodiac: Tropical Zodiac (Western)