Free 1 hour timer online with audio alarm. Large countdown display, fullscreen mode. Perfect for workouts, study blocks and cooking.
First hour of slow-cooked dishes
A full magazine, report or book chapter
60-minute endurance cardio session
Professional deep work hour
Standard university lecture length
The live timer above starts directly on this page — press START and the 1 hour countdown begins immediately. An audio alarm fires when it reaches zero.
For the full experience with fullscreen mode and theme options, open GlowClock's timer tab, enter 0 minutes and 1 hours and press F11 to go fullscreen. The large glowing display is clearly visible across a room — ideal for classrooms, gyms and presentations.
Yes. Keep the GlowClock tab open and the alarm will fire even when you're in another tab. Make sure your device volume is on and the browser isn't suspended (this can happen on mobile when the screen locks).
Yes. Open glow-clock.com, set 0 minutes and 1 hours in the Timer tab and press F11. The countdown fills your entire screen in large, high-contrast text.
Yes. A clear audio alarm sounds when the 1 hour countdown reaches zero. The alarm repeats until you dismiss it so you won't miss it.
Yes. Press Pause on the live timer above, or use the Pause button in the GlowClock app. Press Start again to resume from where it stopped.
Audio alarm · Fullscreen · No sign-up · Works on any device
Open Full Timer App