7inch

Seven inches, written as 7 in or 7-inch, is a unit of length in the imperial system. One inch equals 2.54 centimeters, so seven inches is 17.78 centimeters. The measurement appears in many contexts, including furniture, hardware specifications, screen diagonals, and print sizes. In cataloging or product naming, the form 7inch is sometimes used informally to indicate a seven-inch dimension.

7-inch vinyl records are a long-standing music format. They have a nominal diameter of seven inches and are typically played at 45 rpm on a turntable. Most 7-inch releases are singles, with an A-side and a B-side; some editions include more than one track per side. The format was especially popular from the 1950s through the 1980s and remains in use in independent and punk scenes, as well as among collectors. Packaging commonly consists of a small paper or card sleeve, sometimes with inner sleeves; many issues are issued as colored vinyl or picture discs. In discographies, 7-inch releases are cataloged by label and catalog number.

Beyond measurement and vinyl records, the term 7-inch can appear in product names, model numbers, or other descriptions where seven-inch dimensions are relevant, depending on context.