For a person less than 4 feet 10 inches tall, a 7-foot jump rope is appropriate. If you are above that height, but below 5 feet 3 inches, you should use an 8-foot rope. A 9-foot rope is good for someone 5 feet 4 inches tall to 5 feet 10 inches tall. If your height is between 5 feet 11 inches and 6 feet 6 inches, a 10-foot rope should work.