Cubit << KYOO biht >> is a measure of length used by several early civilizations. It was based on the length of the forearm from the tip of the middle finger to the elbow. No one knows when this measure was established. The length of the arm, or cubit, was commonly used by many early peoples, including the Babylonians, Egyptians, and Israelites. The royal cubit of the ancient Egyptians was about 203/5 inches (52.3 centimeters) long. That of the ancient Romans was 171/2 inches (44.5 centimeters). The Israelite’s cubit at the time of Solomon was 251/5 inches (64 centimeters).