NOVELTY - The composter comprises: a downwardly open container, which is configured to stand on a ground (2); a filling opening arranged on a top side of the container, where the filling opening is closed by a lid (9); an unventilated upper chamber (10), which is arranged beneath the filling opening and has a lateral outlet arranged into the container; a first composting chamber, which is formed as a ventilated vertical shaft (13) extending downward from an upper end of the container to the lateral outlet of an upper chamber and has a bottom shaft end.    USE - The composter is useful for garden or agriculture, and converting organic waste such as vegetable waste, fruit waste, withered flowers, tree cuttings, grass cuttings into compost.    ADVANTAGE - The composter is comfortable and hygienic for the user, and can be easily and rapidly produced in an efficient manner.    DETAILED DESCRIPTION - The composter comprises: a downwardly open container, which is configured to stand on a ground (2); a filling opening arranged on a top side of the container, where the filling opening is closed by a lid (9); an unventilated upper chamber (10), which is arranged beneath the filling opening and has a lateral outlet arranged into the container; a first composting chamber, which is formed as a ventilated vertical shaft (13) extending downward from an upper end of the container to the lateral outlet of an upper chamber and has a bottom shaft end, which is bound by a horizontally arranged lower plate (14) that is pivotally mounted for pivoting a horizontal pivot axis; a movement mechanism, which is mechanically coupled to the lower plate and has a handle disposed on an outside of the container; a downwardly open ventilated second composting chamber, which is directly formed above the ground and is upwardly delimited by the lower plate; and a closeable lateral removal opening, which is formed next to the second composting chamber.    DESCRIPTION OF DRAWING(S) - The diagram shows a schematic view of a composter.    Ground (2)    Lid (9)    Unventilated upper chamber (10)    Ventilated vertical shaft (13)    Lower plate. (14)