Abstract: The extendable measuring cup is constructed of a plurality of measuring cups that are successively arranged in size. The plurality of measuring cups vary in size from one another such that all of the measuring cups are able to nest within one another. The plurality of measuring cups is further defined with a topmost cup that includes internal threading. The topmost cup is able to connect with a threaded container via the internal threading. The topmost cup includes a disc member that is able to pivot with respect to a slot provided on the topmost cup. The disc member is able to rotate from outside of the topmost cup to inside of the topmost cup. In use, the disc member is able to enclose an interior formed with the plurality of measuring cups.