Free basketball quarter timer. NBA: 12-minute quarters. FIBA: 10-minute quarters. Track shot clock, timeouts, and halftime. Start instantly.
NBA: 4×12-minute quarters = 48 minutes of game time. Typical elapsed time including timeouts, fouls, and replay reviews: 2–2.5 hours. FIBA (international): 4×10-minute quarters = 40 minutes. NCAA: 2×20-minute halves = 40 minutes. Overtime: 5 minutes per OT period.
NBA shot clock: 24 seconds. FIBA: 24 seconds. NCAA: 30 seconds. The shot clock resets to 14 seconds (NBA) or 14 seconds (FIBA) after an offensive rebound. Failure to attempt a shot within the shot clock results in shot clock violation — possession changes.
Full timeout: 1 minute 15 seconds. Teams have 7 timeouts per game (reduced to 6 after Q1). In the final 2 minutes, timeouts extend to 100 seconds to allow commercial breaks. The last timeout in each quarter must be called before 2 minutes remaining.
NBA halftime: 15 minutes. College (NCAA): 15 minutes. High school: 10 minutes. FIBA: 15 minutes. The halftime interval allows team tactical adjustments, player recovery, and (at professional level) extensive commercial programming.
A player has 5 seconds to inbound the ball, shoot a free throw, or advance the ball past half-court (in some rules). A closely guarded player with the ball in the backcourt must advance within 8 seconds (NBA) or 8 seconds (FIBA). Violations result in loss of possession.