It’s the miniature version of the classic 18-by-13-inch rimmed baking sheet (which is called a half-sheet pan because it’s half the size of the even larger commercial-use full-sheet tray).

Quarter sheet pans are typically 9 by 13 inches (a standard size for sheet cakes), half sheet pans are 18 by 13 inches (this is the size of most pans described simply as baking sheets) and full ...

Common sizes. Shopping for these pans for home bakers typically comes down to two sizes available in most grocery stores: ...

The rimmed metal baking pan that has long been held dear by American cooks is the rectangular half sheet. At 18 by 13 inches, it offers the proper expanse for a batch of cookie dough or a tumble ...

We were right, and had good results using a 12 ½- by 17 ½- by 1-inch baking pan.Is that a half-sheet pan? Well, pretty close. A half-sheet is 18- by 13- inches. Are they interchangeable?

Sheet pans come in five industry-standard sizes. The most popular are full-size (about 18 by 26 inches) and half-size (about 13 by 18 inches), though measurements vary slightly from brand to brand ...

Most sheet pans are 18-by-13 inches with a 1-inch rim. Sometimes called half-sheet pans, they are half the size of those found in commercial kitchens, which are too big for most home ovens.