Mercury sign calculator
Your Mercury sign is the sign Mercury stood in when you were born: how you think, talk, learn and argue. Enter your birth details to see it, with every planet beside it.
How your Mercury sign is found
Mercury spends two to three weeks in a sign, longer when it turns back, as it does three times a year. Your birth date nearly always settles your Mercury sign.
Mercury keeps close to the Sun: it stands in your Sun’s sign or in the sign on either side. On a day Mercury changed sign, the time of birth decides, and your chart says when that is so.
If you do not know your birth time
You can still find your Mercury sign. The date alone is enough unless Mercury changed sign on your birthday, and then the chart says so and shows both signs.
How each Mercury sign thinks
Mercury is the part of you that thinks and talks: how you learn, how you explain, and what you say when you disagree. Here is each of the twelve in a few words, and a page for each that goes further.
Fire
Mercury in Aries
Mercury in Aries answers before the question has finished. You think fastest under pressure, say what you mean the first time, and lose interest in any argument that has stopped moving.
Earth
Mercury in Taurus
With Mercury in Taurus you learn slowly and never forget. You weigh a decision until it is solid, speak in a voice people trust, and cannot be hurried into an opinion you have not tested.
Air
Mercury in Gemini
This is Mercury at home. With it in Gemini you learn by talking, explain almost anything simply, change your mind without embarrassment, and need a steady supply of questions the way a fire needs air.
Water
Mercury in Cancer
Mercury in Cancer thinks through memory and mood. You remember how every conversation felt, read the tone before the words, and speak most freely to the few people you trust.
Fire
Mercury in Leo
Mercury in Leo makes a storyteller. You explain with warmth and a feel for the occasion, speak as if your words matter because they do, and find it hard to back down once you have said something in public.
Earth
Mercury in Virgo
Mercury in Virgo is at its strongest, ruler and exalted at once. You sort, check and improve almost without thinking, notice the one wrong figure in a column, and trust the method over the mood.
Air
Mercury in Libra
Mercury in Libra weighs both sides before it speaks. You argue fairly, phrase hard things gracefully, see the other person’s case almost too well, and take your time over any decision with two good answers.
Water
Mercury in Scorpio
Mercury in Scorpio thinks like a detective. You hear what was left out, keep your own counsel, ask the question nobody wanted asked, and remember everything you were told in confidence.
Fire
Mercury in Sagittarius
Mercury in Sagittarius sees the whole map before the streets. You think in big ideas and good stories, speak with honesty that can outrun tact, and get bored the moment a subject stops going anywhere.
Earth
Mercury in Capricorn
Mercury in Capricorn is the planner. You think in steps and consequences, speak plainly and rarely waste a sentence, and trust what has been tested over what merely sounds clever.
Air
Mercury in Aquarius
Mercury in Aquarius is the original thinker. You look at a problem from somewhere nobody else is standing, argue for ideas rather than people, and will not repeat a view just because everyone holds it.
Water
Mercury in Pisces
Mercury in Pisces thinks in pictures, music and hunches. You know the answer before you can explain it, pick up what people mean rather than what they say, and lose the thread of anything too dry.
Questions
What does my Mercury sign mean?
It is how your mind works: how you take things in, how you put them into words, and how you change someone’s mind, or don’t.
Is my Mercury sign usually my Sun sign?
Often, but not always. Mercury is never more than one sign from the Sun, so it is in your Sun’s sign or the sign just before or after.
Do I need my birth time to find my Mercury sign?
Usually not. The date and the place are enough unless Mercury changed sign on your birthday.
What if Mercury was retrograde when I was born?
Mercury turns back for about three weeks three times a year, so about one birth in five has it retrograde. Your chart marks it if yours was.
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