Urinals for males can be used conveniently and appropriately by someone who has a penis or otherwise has adaptive means with which to urinate from a standing position. There is no age restriction, and urinals are commonly used by men and boys of all ages. Urinals for females also exist but are not common.

In busy public toilets, urinals are installed for efficiency. Compared with urination in a general-purpose toilet, usage is faster and more sanitary because at the urinal there are no fecal germs, no additional doors or locks to touch, and no seat to turn up. Consistent use of urinals also keeps the toilet stalls cleaner and more available for males who need to defecate. A urinal takes less space, is simpler, and consumes less water per flush (or even no water at all) than a flush toilet. Large numbers of them are usually installed along a common supply pipe and drain. Urinals may also come in different heights, to accommodate tall and short users.

Public urinals usually have a plastic mesh guard, which may optionally contain a deodorizing urinal deodorizer block or "urinal cake". The mesh is intended to prevent solid objects (such as cigarette butts, feces, chewing gum, or paper) from being flushed and possibly causing a plumbing stoppage. In some restaurants, bars, and clubs, ice may be put in the urinals, serving some of the same purposes as the deodorizing block without dispensing odorous chemicals.