The NBA has since kept the format and made each quarter 12 minutes, resulting in a 48-minute game. The NCAA changed their format to two halves in 1954, three years after the change.

Each quarter is 10 minutes (equaling 40 minutes, the same total time as 20-minute halves in men's) and halftime is 15 minutes.

Why do men's and women's NCAA Tournament games have different formats? Men's games are two 20-minute halves, while women's are four 10-minute quarters ...