Different types of barrels have different dimensions, so a wine barrel would be a different size to an oil barrel. Wine barrels and whiskey barrels may also be in different sizes, as some barrels are simply used for storage while others are used to ferment large amounts of alcohol. The latter will, of course, be considerably larger. While there are a lot of different sizes, as mentioned, there are consistent standards in size based on the barrel's function. Knowing these sizes is handy for the DIY enthusiast. Repurposed barrels give a rustic look to any decor and can be useful for creating tables and chairs for any space.
The term wine barrel is also used for any barrel which stores spirits such as brandy or burgundy. The standard burgundy barrel would be around 23 inches in diameter while barrel widths can vary from between 25 inches and 28 inches. A small barrel will only have a 21-inch head. Larger barrels, such as the 65 gallon drum, will have a 28-inch belly, with 23 inches at either end, and be around 35 inches tall. Height does not normally vary between sizes of barrel, so when planning for any barrel-related DIY projects, measurements for the belly of the barrel should your primary concern.
Whiskey barrels are usually large enough enough to store 53 gallons—or 200 liters—of liquor, in which is a pretty standard amount to purchase whiskey. A barrel made for this much alcohol would be about 21 inches by 36 inches in size. The circumference of the belly will be around 26 inches, so it will be slightly smaller than the average barrel, but the height will be the same standard length of a typical barrel.
Repurposing barrels is a popular DIY project since they can be used for almost anything. For example, you can cut a barrel in half and make one into two matching planters, or even into a miniature pond. They also provide a good base for creating unique furniture pieces without cutting them up at all.
For whatever reason you're using wine and whiskey barrels, be sure to refer to these numbers and measure the space you intend to use for your projects. You'll always want to use the widest part of the barrel for your width measurement to ensure it will fit.