Free astrology tool
Mars Sign Calculator
See how you fight, chase, and assert. Enter your birth date and get your Mars sign in seconds — your drive style, anger pattern, and how you go after what you want.
Enter your date of birth
Use noon if you are unsure of your birth time — this gives the best average result.
What is a Mars sign?
Your Mars sign is the zodiac sign the planet Mars occupied at the exact moment of your birth. Mars is the planet of action, drive, desire, and assertion — the force that motivates you to pursue what you want and defend what you have. Because Mars spends roughly 6 to 8 weeks in each sign (taking about 687 days to complete its cycle), it is more personal than the Sun sign but less rapidly changing than the Moon or rising.
In natal astrology, your Mars sign reveals how you pursue goals, handle conflict, express anger, compete, and channel physical energy. It also plays a key role in sexual compatibility — describing the quality of your desire and how directly or indirectly you pursue what (and who) you want. Where Venus describes what you are drawn to, Mars describes how you go after it.
Mars signs at a glance
Each Mars sign carries a distinct drive style. Find yours above, then read the full guide.
Frequently asked questions
What is a Mars sign in astrology?
Your Mars sign is the zodiac sign Mars occupied at the moment of your birth. In astrology, Mars governs drive, ambition, desire, assertiveness, physical energy, and the way you handle anger and conflict. Your Mars sign describes how you pursue goals, what motivates you to act, how you compete, and the quality of your sexual and physical energy.
How often does Mars change signs?
Mars takes approximately 687 days to orbit the Sun, spending roughly 6 to 8 weeks in each zodiac sign under normal conditions. However, Mars retrogrades for about 70 days every 26 months — during these periods it can remain in the same sign for up to 7 months. This is why Mars sign varies considerably among people born in the same period.
What is the difference between Venus sign and Mars sign?
Venus and Mars are often described as complementary in a natal chart. Venus governs how you love, what you find beautiful, and how you attract others — it describes your receptive, relational side. Mars governs how you act, pursue, compete, and assert yourself — it describes your active, drive-oriented side. In relationship astrology, Venus describes what you want in a partner, while Mars describes how you pursue it.
Is Mars sign important in relationships?
Mars plays a significant role in relationship compatibility, particularly regarding sexual chemistry, drive compatibility, and how conflict is navigated. A partner whose Venus harmonizes with your Mars (and vice versa) is a classic indicator of strong physical attraction in synastry. Mars also reveals what energizes or frustrates you in a partner's style of action and ambition.
How do I find my Mars sign?
Use the calculator above to find your approximate Mars sign from your birth date. For a precise result — especially if you were born near a sign boundary or during a Mars retrograde period — you need your exact birth time and location. Astrelle's free natal chart calculator uses precise astronomical data to show your exact Mars sign, house placement, and aspects to other planets.
Get your complete Mars reading on Astrelle
See Mars's exact sign, house, and aspects in your full natal chart — plus Venus, Moon, Rising, and every other planet.