A method for filling containers, in particular cartons, with products, in particular packs, in which the products are successively conveyed horizontally to a filling installation in which the products, while being combined so as to form individual product groups, thereafter are grouped, and an offered-up container, which is in particular conveyed horizontally to the filling installation, is in each case filled in a single track with one or a plurality of product groups, wherein the filled containers subsequently are in particular horizontally transported away, characterized by the following measures: a) the products are conveyed in multiple tracks to the filling installation, specifically along a plurality of conveying tracks which are disposed on top of one another; b) the products conveyed along the conveying tracks to the filling installation are grouped by the filling installation in multiple tracks so as to form product groups, in particular by grouping conveyors of the filling installation that are in each case assigned to the conveying tracks and disposed on top of one another, preferably by compartmentalized conveyors that are disposed on top of one another; c) the product groups thereafter are successively fed in multiple tracks along infeed tracks that are disposed on top of one another to a common revolving vertical conveyor of the filling installation, said vertical conveyor having a plurality of receptacles which for in each case at least one product group of each infeed track are disposed on top of one another; d) the vertical conveyor conveys in each case the product groups received by said vertical conveyor from further below to further above to an ejection position from which the product groups thereafter are conveyed onward in a single track in the direction of a respective offered-up container; e) the offered-up container is filled with at least one of the product groups. a) the products are conveyed in multiple tracks to the filling installation, specifically along a plurality of conveying tracks which are disposed on top of one another; b) the products conveyed along the conveying tracks to the filling installation are grouped by the filling installation in multiple tracks so as to form product groups, in particular by grouping conveyors of the filling installation that are in each case assigned to the conveying tracks and disposed on top of one another, preferably by compartmentalized conveyors that are disposed on top of one another; c) the product groups thereafter are successively fed in multiple tracks along infeed tracks that are disposed on top of one another to a common revolving vertical conveyor of the filling installation, said vertical conveyor having a plurality of receptacles which for in each case at least one product group of each infeed track are disposed on top of one another; d) the vertical conveyor conveys in each case the product groups received by said vertical conveyor from further below to further above to an ejection position from which the product groups thereafter are conveyed onward in a single track in the direction of a respective offered-up container; e) the offered-up container is filled with at least one of the product groups.