3 Hour Timer

Long exams, extended project sessions, and all-day focus blocks.

3:00:00
Space start/pause   R reset   F fullscreen

Other Timer Durations

0:3030 Second Timer1:001 Minute Timer2:002 Minute Timer3:003 Minute Timer4:004 Minute Timer5:005 Minute Timer6:006 Minute Timer7:007 Minute Timer8:008 Minute Timer9:009 Minute Timer10:0010 Minute Timer15:0015 Minute Timer20:0020 Minute Timer25:0025 Minute Timer30:0030 Minute Timer45:0045 Minute Timer1:00:001 Hour Timer1:30:0090 Minute Timer2:00:002 Hour Timer

About the 3 Hour Timer

Long exams, extended project sessions, and all-day focus blocks. This free online 3 hour timer works on any device — desktop, tablet, or mobile. No sign-up or download required. Press Start to begin the countdown. You'll hear an alert when time is up, and a browser notification will appear even if you've switched tabs.

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