Basketball MeasurementsA Numbers Game:Good question! A standard basketball court is 94 feet long, although many high school and college courts are 84 feet. In both cases, the court is 50 feet wide.And, a few more measurements for your information include: a backboard is 6 feet wide and 3.5 feet tall. The rim is 18 inches in diameter, and the top of the rim should be exactly 10 feet off the