The capacity of the bladder is between one to two cups or 8-16 ounces. That’s not a lot of space! In general, most adults urinate about once every two to four hours a day when awake for a total of about six to eight times in an average 24-hour period.
However, the frequency of urinating can depend on many factors such as the amount of fluid a person drinks, body size, hydration level, fluid losses from exercise or increased activity, medical conditions like diabetes and medications.
Frequency to “go” more often is found to affect women more than men. In general about twice as many women as men are affected.
However, the ratio affected by gender does change as we age. Men often to experience issues more as they get older. By age 60, about 20 percent of men experience problems with urinating and by age 85 nearly a third voice issues.