For a 1st grader, the ideal basketball size is typically a Size 5 basketball. Size 5 basketballs have a circumference of about 27.5 inches (69.8 cm) and weigh around 17 ounces (480 grams). This size is great for younger children, as it’s easier to handle, dribble, and shoot compared to larger basketballs.
If the child is particularly small or just starting out, a Size 4 basketball (also known as a youth or mini basketball) with a circumference of 25.5 inches (65 cm) might be a better option.
