The standard unit of measure for firewood is called a bush (full) cord, which usually measures 4 feet tall, by 4 feet deep, and 8 feet long. Firewood is commonly sold by the face cord (8 feet long, 4 feet tall, and only as deep as the wood is cut).

Most firewood is cut between 16 and 18 inches in length. If you need a special size to accommodate your firebox, expect to pay more.