In Major League Baseball, the bases and home plate form a diaond with 90 feet between each base. The distance from first to third base, and home plate to second base, is 127 feet, 3 3/8 inches. The bases have four sides with each side 15 inches in length and located within fair territory.
The front edge of the rectangular pitcher's plate is 60 feet, 6 inches from home plate. The pitcher's plate is 24 inches long and 6 inches wide, and it is placed 10 inches higher than home plate. It is located on the top of a pitcher's mound that is 18 feet in diameter. The edge of the diamond that separates the infield and outfield is recommended to be at least 95 feet from the pitcher's plate.
Major League Baseball rules set minimum fence distances from home plate of 325 feet along the foul lines and 400 feet to center field. A distance of at least 60 feet from behind home plate and the foul lines to the nearest fence or stands is recommended.
On-deck batters stand in a circle that is 5 feet in diameter and at least 37 feet from home plate. They come to bat in a circle that is 26 feet in diameter.