The municipality (Gemeinde) of Hardt covers 10.17 square kilometers (3.93 sq mi) ofthe district ofRottweil, in theGerman state ofBaden-Württemberg. Hardt is physically located in theCentral Black Forest. Elevation above sea level in the municipal area ranges from a high of 834 meters (2,736 ft)Normalnull (NN) at the Hochwald to a low of 597 meters (1,959 ft) NN on the Kirnbach at the border withSchramberg.[3]
Hardt'scoat of arms depicts, ingreen, a field with two fir trees upon afield ofwhite. Between the trees is a smallerblazon with a stag upon atrimount, both inyellow, upon a field ofblue. This pattern was devised in 1953 from aSchultheiß'sseal that featured the firs, but was distinguished from similar coats of arms by the addition of the arms of the House of Falkenstein. The arms of the 17th century Falkenstein zu Rimsingen line are erroneously used on Hardt's coat of arms.[3]