Basketball game lengths vary by level and league, but here are the typical durations:

• NBA (Professional) : Games consist of four 12-minute quarters, totaling 48 minutes of playing time. However, with stoppages, timeouts, halftime (15 minutes), and commercial breaks, the actual game experience lasts about 2 to 2.5 hours on average. Overtime periods add 5 minutes each, extending the game further if needed

• College Basketball : Men's college games have two 20-minute halves (40 minutes total), while women's college games have four 10-minute quarters (also 40 minutes total). Including stoppages and timeouts, college games typically last around 2 hours but can extend to 2.5 hours or more with overtime

• High School Basketball : Games are usually four 8-minute quarters (32 minutes total). With halftime (10-15 minutes) and breaks between quarters, high school games generally last about 1 to 1.5 hours

• International (FIBA) : Games have four 10-minute quarters (40 minutes total). These games tend to have fewer commercial breaks and usually last between 1.5 to 2 hours

In summary, while the official playing time is between 32 and 48 minutes depending on the level, the total duration including breaks, stoppages, and possible overtime typically ranges:

• High school: ~1 to 1.5 hours
• College: ~2 hours
• NBA: ~2 to 2.5 hours

Overtime periods add about 5 minutes each, extending the total game time accordingly