This tool converts genome coordinates and genome annotation files between assemblies. The input data can be pasted into the text box or uploaded from a file. For more information, please see our LiftOver documentation. If a pair of assemblies cannot be selected from the pull-down menus, a sequential lift may still be possible. For example, to lift from mm9 to mm39, lift from Mouse mm9 to mm10 and then from mm10 to mm39.