Moon Sign Calculator
Your Moon sign is the zodiac sign the Moon was in the moment you were born, the sign that rules your emotions, instincts, and inner self. Enter your birth date, time, and city to find yours, free.
We use your city to find the timezone and coordinates, so your local birth time maps to the exact Moon overhead.
What is a moon sign?
Your Moon sign is the zodiac sign the Moon was travelling through at the precise moment you were born. Where your Sun sign (the one tied to your birthday) describes your core identity and the self you grow into, your Moon sign rules your inner, emotional world: how you feel, what makes you feel safe, and how you instinctively react when life catches you off guard.
It’s the private you, the one that comes out at home, with the people you trust, or under stress. Many astrologers say your Moon sign is the truest read on what you actually need to feel happy and secure, even when your Sun sign’s ambitions point somewhere else entirely.
Why your birth time matters
The Moon is the fastest-moving body
The Moon moves roughly 12–13° across the zodiac every day and changes sign about every two and a half days, far faster than the Sun, which spends a month in each sign. That speed is exactly why two people born the same week can have completely different Moon signs.
When the time really counts
For most birthdays the date alone is enough to pin down your Moon sign. But if you were born on a day the Moon crossed from one sign into the next, only your birth time can say which side of the line you fall on. Adding your exact time removes any doubt.
Why we ask for your city
Your birth city tells us the timezone and coordinates, so your local clock time converts to the exact position of the Moon overhead at your moment of birth, no guessing about daylight saving or time zones.
Limitations & accuracy
When you give us your exact birth time, your Moon sign is as precise as the math allows. The catch is the noon estimate: if you don’t know your time, we place the Moon at noon local time, and on a day the Moon is crossing signs that guess can land on the wrong side of the line. Here’s a real one, someone born in New York on 18 June 1990:
- Born 6:00 AMMoon at 25.9° Aries
- Noon estimate (no time given)Moon at 29.6° Aries, last degree
- Born 6:00 PMMoon at 3.2° Taurus
Same date, same city, Aries in the morning, Taurus by evening. The noon estimate clings to the very last degree of Aries, so an evening birth would be quietly misfiled. That’s the one case where your exact time isn’t optional. The Moon only changes sign about every two and a half days, so most birthdays don’t land on a crossing and the date alone is enough.
The Moon in all 12 signs
Each sign gives the Moon a different emotional flavour. Once you know yours, read the full profile of your sign, and explore the others.
- Moon in AriesFire · CardinalA fiery, impulsive heart. You feel things fast and fierce, need independence to feel safe, and process emotion through action rather than sitting with it. When something hits, you move — start a project, go for a run, say the blunt thing — instead of stewing. As a cardinal fire Moon, you flare up quickly and just as quickly let it go; grudges rarely survive the day.
- Moon in TaurusEarth · FixedA steady, sensory heart. You feel safest with comfort, routine, and the people and places you trust, and you take your time before you let your guard down. Stress sends you toward something physical and soothing — good food, your own bed, a familiar walk. As a fixed earth Moon you're slow to rattle and slow to change course once your feelings have settled in.
- Moon in GeminiAir · MutableA curious, restless heart. You process feelings by talking and thinking them through, and you need mental stimulation and variety to feel emotionally settled. When something's bothering you, you'll text three friends and turn it over from every angle before you know how you feel. As a mutable air Moon your moods shift quickly, and naming a feeling out loud is often how you finally settle it.
- Moon in CancerWater · CardinalThe Moon rules this sign, so it sits in its home here. You feel deeply and protectively, nurture the people you love, and carry a strong need for security, memory, and belonging. You hold on to moments — anniversaries, old messages, the way a room felt — and retreat inward when you're hurt rather than confronting it. As a cardinal water Moon, your instinct under stress is to protect: yourself, and everyone you've decided is yours.
- Moon in LeoFire · FixedA warm, expressive heart. You feel best when you're seen and appreciated, give affection generously, and need a little drama and play to feel alive. When you're upset you want it witnessed — silence and indifference wound you more than a real fight. As a fixed fire Moon your warmth is steady and loyal, but a feeling of being overlooked can smoulder long after the moment has passed.
- Moon in VirgoEarth · MutableA thoughtful, careful heart. You feel safest when things are in order, show love through being useful, and can be quietly hard on yourself. Stress sends you to fix and tidy — a clean kitchen or a sorted inbox genuinely settles your nerves. As a mutable earth Moon you process feelings by analysing them, which steadies you but can tip into overthinking what you can't control.
- Moon in LibraAir · CardinalA harmony-seeking heart. You feel most settled in balanced, fair relationships, dislike conflict, and read other people's moods almost instinctively. You'll often soothe the room before you've registered your own feelings, smoothing tension to keep the peace. As a cardinal air Moon you reach for connection and resolution, but check that you aren't agreeing just to avoid a hard conversation.
- Moon in ScorpioWater · FixedAn intense, private heart. You feel everything at full depth, crave emotional truth and loyalty, and guard your inner world fiercely. When you're hurt you go quiet and watchful rather than loud, and trust is something people earn slowly. As a fixed water Moon your feelings run deep and stay put — you don't forget, and you don't let many people all the way in.
- Moon in SagittariusFire · MutableA free, optimistic heart. You feel best with room to roam and a sense of meaning, and you process emotion through perspective, humour, and adventure. When things get heavy you reach for the bigger picture — or the open road — rather than sitting in the weight of it. As a mutable fire Moon you bounce back fast, though restlessness can read as avoidance when you keep moving to outrun a feeling.
- Moon in CapricornEarth · CardinalA self-contained, resilient heart. You feel safest when you're in control and capable, hold emotions close, and show care through reliability. You'd rather solve a problem than talk about how it makes you feel, and you keep composure when others fall apart. As a cardinal earth Moon you carry a lot quietly — strength others lean on, but ask yourself who you let lean on you.
- Moon in AquariusAir · FixedA cool, independent heart. You feel through ideas and ideals, need space and freedom, and care deeply but from a slight, observing distance. When emotions run high you step back to analyse rather than dive in, which keeps you steady but can read as detached. As a fixed air Moon your need for autonomy is non-negotiable — closeness works best when no one's clinging.
- Moon in PiscesWater · MutableA dreamy, porous heart. You feel everything — yours and everyone else's — with deep empathy and imagination, and need quiet and creativity to recharge. You absorb the mood of a room without meaning to, so crowds and conflict drain you fast. As a mutable water Moon your boundaries are soft, which makes you compassionate but means protecting your own energy takes real, deliberate effort.
How to read your moon sign
Your Moon sign rarely makes sense on its own, it makes sense as a layer. Picture three of them. Your Sun is the self you’re building and the goals you reach for; your rising is the first impression you give and the way you meet the world; your Moon is what’s happening underneath both, the feelings you actually have while you do all of it. When a description of your Moon sign doesn’t sound like you, it’s usually because you’re comparing it to your public self rather than your private one.
A useful trick is to read your Sun and Moon together as a sentence. A Capricorn Sun with a Pisces Moon, for example, is someone who looks ambitious and self-contained on the surface but runs on deep, sensitive, easily-flooded feeling underneath, they chase the goal, then need to retreat and recover in private. The two signs aren’t in conflict; one is the engine, the other is the weather it runs in. Notice where they agree (an easy, all-of-a-piece self) and where they pull against each other (the inner tension you’ve probably always felt but couldn’t name).
Above all, your Moon sign describes needs, not just traits, what actually settles you when you’re upset, what you reach for when you’re safe, what you can’t do without and stay happy. Read it less as “this is your personality” and more as “this is what your heart asks for,” and it tends to land.
Positions are computed with the Swiss Ephemeris, the same astronomical engine professional astrologers rely on. Your birth city sets the timezone and coordinates so your local clock time converts cleanly to UTC. With an exact birth time the Moon sign is precise to the degree; without one we place the Moon at noon local time, which can shift a borderline Moon into the neighbouring sign (see the example above).
Find your other placements. Your Moon is the emotional layer, pair it with your Mars sign (your drive) and your Venus sign (how you love), or see them all together in your full birth chart.
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