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Mars Sign Calculator
Find your Mars sign — the sign that drives your energy, ambition, and desire. Enter your birth details to reveal it instantly, free.
What your Mars sign means
Your Mars sign shows how you take action: how you compete, get angry, chase goals, and express physical and sexual energy. It is one of the most useful placements for understanding motivation and conflict style. Mars takes about two years to circle the zodiac and typically spends six to seven weeks in a sign — though when it turns retrograde it can linger in one sign for six months or more — so your birth date is almost always enough to find it.
Frequently asked questions
What is a Mars sign?
Your Mars sign is the zodiac sign Mars was in at your birth. Mars rules drive, desire, courage, anger, and how you pursue what you want — the “how you act” part of your chart.
What does my Mars sign say about me?
It describes your energy and assertiveness: how you fight, compete, take initiative, and express passion. In relationships it is often read alongside Venus — Venus for what you are drawn to, Mars for how you pursue it.
Do I need my birth time for my Mars sign?
Usually not. Mars stays in a sign for around six to seven weeks (much longer when retrograde), so only people born on the day Mars changed signs need an exact time to settle it.
How often does Mars change signs?
Every six to seven weeks on average, completing the zodiac in about two years. A retrograde can keep Mars in a single sign for six months or more — it spent roughly seven months in Gemini across 2022–23, for example.
Is this calculator free?
Yes — free and instant, with no signup. A free Aurae account unlocks your full natal chart, including Mars’s house and aspects, with a personalized AI reading.