Measurements for a Tennis Court

Understanding the correct measurements for a tennis court is essential for building a professional, safe, and tournament-ready playing surface. Whether the court is for schools, sports academies, clubs, or residential use, following official dimensions ensures consistent play and player safety. This complete guide explains tennis court measurements for singles and doubles, line markings, net height, and total area requirements. Official Tennis Court Dimensions A regulation tennis court is a rectangle with specific, internationally recognized dimensions. These measurements are set by the International Tennis Federation (ITF) and apply to all levels of play. The total length of the court is 78 feet (23.77 meters). This measurement is taken from the outside edge of one baseline to the outside edge of the opposing baseline. The width of the court varies depending on whether a singles or doubles match is being played. The space between the singles sideline and the doubles sideline on each side is known as the doubles alley. Each alley is 4.5 feet (1.37 meters) wide. Tennis Court Measurements for Singles Play Component Measurement Court Length 78 feet (23.77 m) Court Width 27 feet (8.23 m) Service Box Length 21 feet Service Box Width 13.5 feet Net Height at Center 3 feet (0.914 m) Tennis Court Measurements for Doubles Play Component Measurement Court Length 78 feet (23.77 m) Court Width 36 feet (10.97 m) Doubles Alley Width 4.5 feet on each side Service Box Length 21 feet Net Height at Posts 3.5 feet (1.07 m) The Layout: Lines and Zones Explained Every line on a tennis court serves a specific purpose, creating distinct zones that dictate the rules of play, particularly during serves. All lines on the court should be the same color, creating a sharp contrast with the playing surface. The width of most lines is between 1 and 2 inches (2.5 to 5 cm), while the baseline can be up to 4 inches (10 cm) wide. Baseline and Center Mark The baseline is the rearmost line on each side of the court, running parallel to the net. It marks the boundary for the length of the court. When serving, a player must stand behind the baseline. The center mark is a small line, 4 inches (10 cm) long, that divides the baseline in half. It helps players position themselves correctly for serves. Service Lines and Service Boxes The service line runs parallel to the net, located 21 feet (6.4 meters) away from it. This line marks the back of the service boxes. The center service line runs perpendicular to the net, connecting the midpoints of the two service lines. This line divides the area between the net and the service lines into two equal service boxes on each side of the court: the deuce court (right side) and the ad court (left side). A legal serve must land within the diagonally opposite service box. Each service box measures 21 feet (6.4 meters) by 13.5 feet (4.1 meters). Sidelines There are two sets of sidelines that define the width of the playing area. Net Height and Placement The net divides the court into two equal halves. It is stretched across the full width of the court, parallel to the baselines. The net is held up by two net posts located 3 feet (0.914 meters) outside the doubles sidelines. This slight drop in height at the center creates a strategic element, as players often aim for the lowest part of the net to increase their margin for error. Total Area and Run-Off Space While the playing lines define the court, additional space around the perimeter is crucial for player safety and movement. This “run-off” area allows players to chase down wide shots without risking injury. Therefore, the total recommended space for a single tennis court, including run-off areas, is 120 feet (36.57 meters) long by 60 feet (18.29 meters) wide. For multi-court facilities, additional spacing is needed between courts. Court Surfaces and Their Impact on Gameplay The material used for a tennis court surface has a significant effect on the ball’s speed and bounce, which in turn influences playing styles. There are three primary types of court surfaces. Hard Courts Hard courts are made from rigid materials, often acrylic layers over a concrete or asphalt base. This is the most common type of surface. Clay Courts Clay courts are made from crushed brick, shale, or stone. The French Open is famously played on this surface. Grass Courts Grass courts are the traditional surface of tennis, with Wimbledon being the premier grass-court tournament. They are made from natural grass grown on tightly packed soil. Importance of Accurate Tennis Court Measurements Correct measurements ensure: Incorrect dimensions can affect performance and disqualify the court from official matches. Maintaining Your Tennis Court Proper maintenance is essential to ensure a tennis court remains safe, playable, and compliant with official standards. Regular care preserves the surface and protects the investment. By following these guidelines, you can ensure your tennis court provides a high-quality playing experience for years to come.