Don’t bother if you didn’t see it on your ball—not every manufacturer prints it on their basketballs. NBA recommends that the air pressure in a basketball must be between 7.5 and 8.5psi. You can use this standard measurement as a guide to get the required air pressure for your basketball.
A regulation NBA basketball must contain between 7 1/2 and 8 1/2 pounds of pressure per square inch, or PSI. The ball also must exhibit an official NBA approval mark. At the beginning of an NBA game, each team must have access to six balls during the warm-up period. A regulation backboard measures 6 feet wide and 3 1/2 feet tall.
The recommended air pressure for a basketball is 7.5 to 8.5 psi (pounds per square inch). That is also the NBA basketball air pressure recommendation. As you can see, there isn’t a fixed air pressure endorsement by the NBA, but you can use this recommendation as a guide to getting the right air pressure.
For a 29.5″ basketball (mens) and a 28.5″ basketball (womens), the recommended air pressure range is 7 - 9 PSI. The irony is almost no one has a gauge to accurately check the PSI rating on a basketball while inflating it because most pumps aren’t equipped with a gauge and ones that are rarely give an accurate reading.
A Football is harder. They are pumped to 13 (12.5 to 13.5) PSI in the NFL while a basketball in the NBA is 8.5 PSI.
An adult for assistance. 3 basketballs: 1 basketball at 8 psi, 1 basketball at 9 psi and 1 basketball at 6 psi (psi = pounds per square inch) 1 Air pump. 1 Pressure gauge. 1 “Yardstick” style tape measure. 2 Different surfaces: 1 wood surfac,; 1 concrete surface.
Follow these steps to conduct your experiment: Drop a basketball inflated to 8 psi from a height of 6 feet (1.8 meters). Be sure that the bottom of the ball-not the... Observe, mark, and measure the height of the ball's bounce, remembering to measure at the top of the ball. Record your... Repeat ...
Size: Radius: Weight: PSI: Used By: Size 7: 29.5″ 22 oz: 7.5 to 8.5: This is the official size for the NBA and men’s college and high school basketball leagues.