Mercury Sign Calculator

Find your Mercury sign from your birth date to explore your thinking and communication style. Positions from the full Meeus/ELP-2000 series (arcminute level); for entertainment.

Looking up what a birth date or a name is said to mean: a sun sign, the rest of a birth chart, a life-path number, or the same for someone else before a conversation about it.

Taking a sun sign as the whole chart. Someone born a day either side of a cusp changes sign depending on the year and the time of day, and the moon and rising signs move much faster than the sun does — a birth time is what separates a chart from a guess.

They sit next to each other but answer different questions. Mercury Retrograde Dates and Other Planets: see whether Mercury, Venus, Mars or any other planet is retrograde today, and when its next retrograde begins. All eight planets that go retrograde are covered — Mercury, Venus, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto — with every loop of any year and its shadow periods. Stations are computed from each planet's own change of direction, so the dates land on the right day. Pick whichever matches what you're starting from — both are free.

Mars Sign Calculator is the closest one after this: Find your Mars sign from your birth date to explore your drive, energy and how you assert yourself. Positions from the full Meeus/ELP-2000 series (arcminute level); for entertainment.

Moon Sign Calculator and Moon Sign Compatibility Calculator — they come up in the same task often enough to be worth a second tab.

The positions are computed from real ephemeris arithmetic, not from a fixed table of dates, so a cusp birthday lands on the right side of the boundary for its own year. What those positions are taken to mean is tradition, not measurement, and the tools present it as such.