2027 Forecast

Synastry aspect · 120° · orb 8°

Mars Trine Neptune Synastry

Mars trine Neptune in synastry means one partner's Mars sits about 120° from the other's Neptune (orb ±8°), an angle read as flow. It turns up in 8.8% of couples born within five years of each other.

Each side on its own first: Mars in a birth chart, Neptune in a birth chart and birth chart calculator.

In couples
8.8% about 1 in 11
Either way round
16.72% both ways: 0.88%
Angle
120° 4 signs apart · orb ±8°
Birth time
Not needed the date sets it

Simulation of 3 million couples, NASA JPL DE440.

The same aspect with one of these planets: Ascendant trine Mars, Mars trine Moon, Mars trine Venus, Mars trine Vertex, Neptune trine Sun, Neptune trine Node, Ascendant trine Neptune and Chiron trine Neptune.

Mars Trine Neptune Synastry: Meaning and How Common It Is

Checked against chance

How common is Mars trine Neptune in synastry?

Mars trine Neptune, counted three ways
Mars trine Neptune, counted three ways Mars trine Neptune, counted three ways: Couples ≤ 5 yrs apart 8.8%, Any two people, 1940–2010 9.09%, Planets spread evenly 8.89%. Couples ≤ 5 yrs apartCouples ≤ 5 yrs apart: 8.8%8.8%Any two people, 1940–2010Any two people, 1940–2010: 9.09%9.09%Planets spread evenlyPlanets spread evenly: 8.89%8.89%Source: AstroHot simulation, 3 million pairs, NASA JPL DE440astrohot.com Couples ≤ 5 yrs apartCouples ≤ 5 yrs apart: 8.8%8.8%Any two people, 1940–2010Any two people, 1940–2010: 9.09%9.09%Planets spread evenlyPlanets spread evenly: 8.89%8.89%Source: AstroHot simulation, 3 million pairs, NASA JPL DE440astrohot.com

The age gap changes little: 8.28% to 9.47% at any gap up to 40 years.

How the odds are calculated →

By sign

Which signs make Mars trine Neptune, generation by generation

Mars trine Neptune, generation by generation: the Mars signs that make it
Mars trine Neptune, generation by generation: the Mars signs that make it Neptune in Virgo (1928–43): Mars in Taurus or Capricorn; Neptune in Libra (1942–57): Mars in Gemini or Aquarius; Neptune in Scorpio (1955–70): Mars in Cancer or Pisces; Neptune in Sagittarius (1970–84): Mars in Aries or Leo; Neptune in Capricorn (1984–98): Mars in Taurus or Virgo; Neptune in Aquarius (1998–2012): Mars in Gemini or Libra. Mars’ sign that makes itAriTauGemCanLeoVirLibScoSagCapAquPisNeptune in Virgo1928–43Neptune in Virgo 1928–43: Mars in AriesNeptune in Virgo 1928–43: Mars in Taurus — forms itNeptune in Virgo 1928–43: Mars in GeminiNeptune in Virgo 1928–43: Mars in CancerNeptune in Virgo 1928–43: Mars in LeoNeptune in Virgo 1928–43: Mars in VirgoNeptune in Virgo 1928–43: Mars in LibraNeptune in Virgo 1928–43: Mars in ScorpioNeptune in Virgo 1928–43: Mars in SagittariusNeptune in Virgo 1928–43: Mars in Capricorn — forms itNeptune in Virgo 1928–43: Mars in AquariusNeptune in Virgo 1928–43: Mars in PiscesNeptune in Libra1942–57Neptune in Libra 1942–57: Mars in AriesNeptune in Libra 1942–57: Mars in TaurusNeptune in Libra 1942–57: Mars in Gemini — forms itNeptune in Libra 1942–57: Mars in CancerNeptune in Libra 1942–57: Mars in LeoNeptune in Libra 1942–57: Mars in VirgoNeptune in Libra 1942–57: Mars in LibraNeptune in Libra 1942–57: Mars in ScorpioNeptune in Libra 1942–57: Mars in SagittariusNeptune in Libra 1942–57: Mars in CapricornNeptune in Libra 1942–57: Mars in Aquarius — forms itNeptune in Libra 1942–57: Mars in PiscesNeptune in Scorpio1955–70Neptune in Scorpio 1955–70: Mars in AriesNeptune in Scorpio 1955–70: Mars in TaurusNeptune in Scorpio 1955–70: Mars in GeminiNeptune in Scorpio 1955–70: Mars in Cancer — forms itNeptune in Scorpio 1955–70: Mars in LeoNeptune in Scorpio 1955–70: Mars in VirgoNeptune in Scorpio 1955–70: Mars in LibraNeptune in Scorpio 1955–70: Mars in ScorpioNeptune in Scorpio 1955–70: Mars in SagittariusNeptune in Scorpio 1955–70: Mars in CapricornNeptune in Scorpio 1955–70: Mars in AquariusNeptune in Scorpio 1955–70: Mars in Pisces — forms itNeptune in Sagittarius1970–84Neptune in Sagittarius 1970–84: Mars in Aries — forms itNeptune in Sagittarius 1970–84: Mars in TaurusNeptune in Sagittarius 1970–84: Mars in GeminiNeptune in Sagittarius 1970–84: Mars in CancerNeptune in Sagittarius 1970–84: Mars in Leo — forms itNeptune in Sagittarius 1970–84: Mars in VirgoNeptune in Sagittarius 1970–84: Mars in LibraNeptune in Sagittarius 1970–84: Mars in ScorpioNeptune in Sagittarius 1970–84: Mars in SagittariusNeptune in Sagittarius 1970–84: Mars in CapricornNeptune in Sagittarius 1970–84: Mars in AquariusNeptune in Sagittarius 1970–84: Mars in PiscesNeptune in Capricorn1984–98Neptune in Capricorn 1984–98: Mars in AriesNeptune in Capricorn 1984–98: Mars in Taurus — forms itNeptune in Capricorn 1984–98: Mars in GeminiNeptune in Capricorn 1984–98: Mars in CancerNeptune in Capricorn 1984–98: Mars in LeoNeptune in Capricorn 1984–98: Mars in Virgo — forms itNeptune in Capricorn 1984–98: Mars in LibraNeptune in Capricorn 1984–98: Mars in ScorpioNeptune in Capricorn 1984–98: Mars in SagittariusNeptune in Capricorn 1984–98: Mars in CapricornNeptune in Capricorn 1984–98: Mars in AquariusNeptune in Capricorn 1984–98: Mars in PiscesNeptune in Aquarius1998–2012Neptune in Aquarius 1998–2012: Mars in AriesNeptune in Aquarius 1998–2012: Mars in TaurusNeptune in Aquarius 1998–2012: Mars in Gemini — forms itNeptune in Aquarius 1998–2012: Mars in CancerNeptune in Aquarius 1998–2012: Mars in LeoNeptune in Aquarius 1998–2012: Mars in VirgoNeptune in Aquarius 1998–2012: Mars in Libra — forms itNeptune in Aquarius 1998–2012: Mars in ScorpioNeptune in Aquarius 1998–2012: Mars in SagittariusNeptune in Aquarius 1998–2012: Mars in CapricornNeptune in Aquarius 1998–2012: Mars in AquariusNeptune in Aquarius 1998–2012: Mars in PiscesSource: NASA JPL DE440 ingressesastrohot.com

Born 1955–70, with Neptune in Scorpio? Then a partner’s Mars in Cancer or Pisces makes the trine.

To check it by degree: Neptune at 10° Virgo makes the trine with Mars anywhere from 2° to 18° of Taurus or Capricorn — the 120° angle give or take 8°. The chart goes by sign, but the trine also forms across a sign line: Neptune at 1° Virgo and Mars at 29° Sagittarius are 118° apart, a square by sign.

Years are first entry to final exit, so neighboring rows overlap where Neptune stepped back on a retrograde. Source: NASA JPL DE440.

Between two people

What does Mars trine Neptune mean in synastry?

The Neptune person softens and inspires the Mars person; the Mars person gives the other's dreams some force. Romantic, creative and spiritually shared projects benefit. The pair work well on creative or idealistic projects — music, film, volunteering, spiritual practice — where action serves a dream. Desire tends to be romantic and gentle rather than forceful.

The usual mistake

Where does Mars trine Neptune usually go wrong?

Gentleness avoids conflict. Disagreements are smoothed over before they are aired, and frustration has nowhere to go.

Over time

How Mars trine Neptune plays out over time

  1. Early on. A shared creative or spiritual project often brings them together — a band, a retreat, a cause — and the energy feels gentle but purposeful.
  2. Under pressure. Gentleness can smooth over conflicts that need airing.
  3. Years in. Creative or spiritual projects often anchor the relationship.

Mars and Neptune at other angles

At any angle: One person's Mars — drive, desire and anger — meets the other's Neptune — dreams, ideals and evasion. Energy and imagination combine, which can inspire romance and art or dissolve into confusion about what either person actually wants.

The trine among the Mars–Neptune angles, % of couples
The trine among the Mars–Neptune angles, % of couples The trine among the Mars–Neptune angles, % of couples: Sextile 60° 6.21%, Square 90° 9.19%, Trine 120° 8.8%, Opposition 180° 4.51%. Sextile 60°Sextile 60°: 6.21%6.21%Square 90°Square 90°: 9.19%9.19%Trine 120°Trine 120°: 8.8%8.8%Opposition 180°Opposition 180°: 4.51%4.51%Source: AstroHot simulation, 3 million pairs, NASA JPL DE440astrohot.com Sextile 60°Sextile 60°: 6.21%6.21%Square 90°Square 90°: 9.19%9.19%Trine 120°Trine 120°: 8.8%8.8%Opposition 180°Opposition 180°: 4.51%4.51%Source: AstroHot simulation, 3 million pairs, NASA JPL DE440astrohot.com
Square 90° · 9.19% of couples Opposition 180° · 4.51% of couples Sextile 60° · 6.21% of couples

Next to Mars trine Neptune in our list of 382, which runs from the most asked-about down.

Moon square Node 90° · 8.89% of couples Moon sextile Pluto 60° · 6.7% of couples Ascendant trine Sun 120° · 8.88% of couples Mercury opposition Venus 180° · 4.46% of couples

Cite this page

AstroHot. “Mars Trine Neptune Synastry: Meaning and How Common It Is.” Accessed October 29, 2026. https://astrohot.com/synastry/aspects/mars-trine-neptune/

For Wikipedia {{cite web |title=Mars Trine Neptune Synastry: Meaning and How Common It Is |url=https://astrohot.com/synastry/aspects/mars-trine-neptune/ |website=AstroHot |access-date=2026-10-29}}