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10 feet(3m).
Whether it is a gym, a park, or a professional court, the basketball hoop is always roughly 10 feet(3m) off the ground. The reasoning behind this decision is because when James Naismith invented the sport in 1891, he hung peach baskets, on the railing of the running track of the YMCA gym in Massachusetts. That railing was 10 feet off the ground.