Mars in the 12th House: Meaning by Rising Sign
The short answer
With whole-sign houses, Mars is in your 12th house when it is in the sign 11 signs on from your rising sign: Mars in Pisces for Aries rising, Mars in Virgo for Libra rising, and so on for all twelve rising signs.
What Mars in the 12th house means
Mars describes your drive, and where you're willing to push. In the 12th house of rest and what is hidden, that plays out through rest, retreat, endings, and what you have not admitted yet.
The 12th is a cadent house, where planets work more quietly, through thinking, routine and adjustment. Its natural sign is Pisces, so Mars here takes on some of Pisces's concerns whatever sign it is actually in.
With whole-sign houses, Mars sits in your 12th house when it is in the sign 11 signs on from your rising sign: for Aries rising that means Mars in Pisces. A transit of Mars through one house lasts about 2 months, because that is how long Mars usually stays in one sign.
Which sign puts Mars in your 12th house
Find your rising sign in the left column. If your Mars is in the sign beside it, your Mars is in the 12th house.
| Your rising sign | Mars in the 12th house |
|---|---|
| Aries rising | Mars in Pisces |
| Taurus rising | Mars in Aries |
| Gemini rising | Mars in Taurus |
| Cancer rising | Mars in Gemini |
| Leo rising | Mars in Cancer |
| Virgo rising | Mars in Leo |
| Libra rising | Mars in Virgo |
| Scorpio rising | Mars in Libra |
| Sagittarius rising | Mars in Scorpio |
| Capricorn rising | Mars in Sagittarius |
| Aquarius rising | Mars in Capricorn |
| Pisces rising | Mars in Aquarius |
How long a Mars transit of the 12th house lasts
Mars stays in one sign for about 2 months on average, so a transit of Mars through your 12th house lasts about that long: as little as about 38 days and as much as about 8 months across the charted years.
About the 12th house
The 12th house of rest and what is hidden: rest, retreat, endings, and what you have not admitted yet. Its natural sign is Pisces.
How the houses are counted
Houses here use whole-sign counting: your rising sign is the whole 1st house, the next sign the 2nd, and so on around the zodiac. Many astrologers use Placidus or another quadrant system instead, which can move a planet close to a sign boundary into the neighbouring house. Either way you need an accurate birth time, because the rising sign changes about every two hours.
Mars in the other houses
Mars in the 1st house · Mars in the 2nd house · Mars in the 3rd house · Mars in the 4th house · Mars in the 5th house · Mars in the 6th house · Mars in the 7th house · Mars in the 8th house · Mars in the 9th house · Mars in the 10th house · Mars in the 11th house
Other planets in the 12th house: Sun · Moon · Mercury · Venus · Jupiter · Saturn · Uranus · Neptune · Pluto
Is your Mars in the 12th house? Vera reads it with the rest of your chart.
House placements need a birth time. Vera casts your chart from your birth details and reads your Mars in its real house, sign and aspects.