Classic Surface-Mounted Toilet Paper Dispenser, 12-1/2 in. x 3-15/16 in. x 2 in.
Similarly one may ask, are toilet paper rolls standard size?
How Long is a Roll of Toilet Paper? The length of a roll of tissue is 3.7 inches, equivalent to 0.3 feet. This is the standard size but some have a bit longer or shorter ones depending on the brand and type of tissue produced.