What is the normal frequency of urination?

Most people urinate four to six times per day and pass between 3 cups and 3 quarts of urine daily, explains The Merck Manual Home Edition. Excessive urination may take the form of urinating more frequently throughout the day, or passing a larger-than-normal amount of urine.

The most common causes of urinary frequency include bladder infections, urinary incontinence, benign prostatic hyperplasia and stones in the urinary tract, according to The Merck Manual Home Edition. The most common causes of an increase in the volume of urine include uncontrolled diabetes mellitus, drinking too much water, diabetes insipidus and the use of diuretic medications or substances, such as coffee and alcohol.