A standard full-size basketball court measures approximately 94 feet by 50 feet, which equals 4,700 square feet. Therefore, a basketball gym that includes a full-size court would need to be at least this size, plus additional space for spectator seating, storage, and other amenities. The total square footage of a basketball gym can range from around 6,000 square feet for a basic gym with minimal amenities to over 10,000 square feet for a larger gym with additional features such as locker rooms, showers, and a weight room.