A cookie sheet is a type of sheet pan that is used primarily in baking cookies. It has a flat surface and one side usually has a “lip” for easy handling.
The other three sides are simply flat, without any upturned, extended parts to allow for easy sliding of the cookies after they have been baked and taken out of the oven.
Cookie sheets are made from different materials but usually, bakers go with the aluminum or stainless steel variety. These also come in a variety of sizes.
Cookie sheets come in several different sizes and choices are usually made based on the size of the oven and the number of cookies you wish to bake per batch.
“How big is a cookie sheet?” therefore will depend on your own requirements.
The more common sizes of cookie sheets are tagged as Full, Three Quarters, Half and Quarter.
For “How big is a cookie sheet?” in the Full-size variety, this one measures approximately 26 inches in width by 18 inches in depth and about an inch thick.
A Three-Quarter cookie sheet on the other hand, measures about 21 inches in width by 15 inches in depth by an inch in height; while a Half-size sheet is around 18 inches in width by 13 inches in depth by 1 inch in height.
As for “How big is a cookie sheet?” for the Quarter size, this is approximately 9 inches inn width by 13 inches in depth by an inch thick.
Other Cookie Sheet Sizes
You will find that other manufacturers provide cookie sheets in other measurements. For instance, some manufacturers’ answer to “How big is a cookie sheet?” can come in Large and Grand sizes.
The Large one in this case, generally measures about 14 inches in depth by 20 inches in width while a Grand one is around 14 inches in depth by 17.5 inches in width.
Other sizes that you may find in the market today are pegged as: 9.5 inches in length by 14 inches in width by 0.4-inch thick; 14 inches in length by 16 inches in width by 0.4-inch thick; and 12 inches in length by 13.75 inches in width.
Whatever size of cookie sheet you choose, remember to pick one that will fit perfectly inside your oven.
It is recommended that you leave a 2-inch gap to serve as buffer between your cookie sheet and the wall of the oven to allow for proper air circulation.