What is a Mercury sign?

Your Mercury sign is the zodiac sign the planet Mercury was in when you were born. It shapes how you think, learn, speak and write — the style of your mind.

Do I need my birth time to find my Mercury sign?

Almost never. Mercury moves quickly but changes sign on distinct days, so your birthday alone gives the right answer on nearly every day of the year.

What is the difference between my Mercury sign and my sun sign?

Your sun sign is your core self; your Mercury sign is specifically about your mind — how you think and communicate. Because Mercury sits near the Sun, it is sometimes the same sign as your Sun and sometimes the one next door.

Mercury Sign Calculator — find your Mercury sign, free

What your Mercury sign says about you

Mercury is the planet of the mind and communication — so your Mercury sign describes how you think, how you talk and write, how you take in information, and the way you make decisions. It’s the difference between the person who thinks out loud and the one who goes quiet to work it through.

Mercury is never far from the Sun, moving briskly through the signs, so your Mercury sign comes from your birthday alone almost always — no birth time needed. It often describes how you come across in conversation more accurately than your sun sign.