Free tool

Mercury Sign Calculator

Your Mercury sign is the sidereal sign Mercury occupied at birth — how you think, communicate, learn, and process information.

Computed using Swiss Ephemeris and the Lahiri ayanamsa.

Date of birth

Time of birth (optional)

Without a birth time, this uses noon on your birth date. Mercury changes sign every 15 to 20 days — if you were born near a sign change, your result may differ.

Birthplace (optional)