Moon Sign Calculator
Your Moon sign rules your emotions and inner world. Enter your birth date (and time, if you know it) to find it.
The Moon changes sign every ~2.5 days. If no time is given we use noon; near a sign change your exact time and place decide it.
What your Moon sign means
If your Sun sign is who you are, your Moon sign is how you feel. It rules your emotions, your instincts, your inner world and what makes you feel safe. It's the private self behind the public one — which is why two people with the same star sign can feel so different. Together with your Rising sign, it forms your Big Three.
How the Moon sign calculator works
The Moon is the fastest-moving body in astrology, sweeping through all twelve signs in about a month and changing sign roughly every two and a half days. This calculator computes the Moon's exact ecliptic position for your birth moment and matches it to the sign it was travelling through. Because it moves so quickly, entering your birth time makes the result far more precise.
Born near a sign change?
If the Moon changed sign on your birthday, the exact time and place of birth decide which one is yours. When you're not sure, read both — the one that feels truer emotionally is usually the answer, and a full birth chart confirms it.
Go deeper
Your Moon sign is one of the three pillars of your chart. Explore the emotional side of the Moon in the Moon collection, or read your Sun and Rising in Zodiac Signs.