The standard WWE ring is 20' x 20', and is raised 4.5' off of the ground. The rings are used for matches between wrestlers of all different sizes and affiliations, such as SmackDown and RAW.
WWE rings have a standard size of 20 square feet. Most other companies over the years have gone with rings that are 18 square feet. Some people think that WWE does this to make their product look better on television.
The size of a regulation WWE ring is a 20 foot by 20 foot square that stands about 4 feet high. The ropes and turnbuckles stand about 5 feet off the top of the ring.