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Space start / pause · R reset · F full screen · works with presentation clickers
A 1 hour timer is a countdown that runs for 1 hour and sounds an alarm when it reaches zero. This one starts on its own when the page opens and works full screen on a classroom projector, a laptop, or a phone.
- Length
- 1 hour
- Equals
- 1 hour is 60 minutes, or 3,600 seconds.
- 1 hour from now
- shown under the timer as "Ends at"
- Alarm
- Bell, chime, beep, gentle tone, or silent
- Price
- Free, no sign-up, nothing to install
What to use a 1 hour timer for
- Practice sections for standardized tests
- Deep-work blocks
- Club meetings and tutoring sessions
Using a 1 hour timer in the classroom
For long sessions such as 1 hour, consider hiding the numbers and showing only the shrinking bar. Students can see roughly how much time is left without watching every second tick by.
Teaching with it? The classroom timer adds one-tap presets for common routines, and thevisual timer shows time as a shrinking disc for students who are still learning to read a clock.
How this timer works
- Starts by itself. The 1-hour countdown begins when the page opens, so a bookmark is all you need.
- Full screen. Press F to fill the display. Nothing else is shown — no menus and no ads.
- Your choice of alarm. Pick a bell, chime, beep, or gentle tone, or run it silently.
- Four displays. Digital with a ring, a visual disc, a progress bar, or a traffic light that turns yellow and red.
- Shareable. "Copy link" saves your alarm and display choices in the link for students or colleagues.
Other timers
- 29 Minute Timer
- 30 Minute Timer
- 35 Minute Timer
- 40 Minute Timer
- 45 Minute Timer
- 50 Minute Timer
- 55 Minute Timer
- 75 Minute Timer
- 90 Minute Timer
- 2 Hour Timer
- All timers →
1 Hour Timer FAQ
How do I set a 1-hour timer?
Open this page and the timer is already set: it starts counting down from 1 hour as soon as it loads. Press the space bar or Pause to stop it, Reset to go back to 1 hour, and F for full screen.
What time will it be in 1 hour?
Add 1 hour to the current time. While this timer runs, the exact answer for your time zone is shown under the countdown as "Ends at", so you never have to work it out.
How long is 1 hour?
1 hour is 60 minutes, or 3,600 seconds.
How much time is left on my timer?
The time remaining is shown in the large digits and in the browser tab title, so you can check it even from another tab. The ring around the digits also shrinks as time runs out.
Can I show this 1 hour timer on a projector or smart board?
Yes. Press F or the Full screen button and the countdown fills the whole display with no ads or menus. A presentation clicker works too: the "next" button starts and pauses the timer.
Will the alarm still ring if I switch to another tab?
Yes. The timer follows your device clock, so it stays accurate in a background tab. Click anywhere on the page once so your browser allows the alarm sound.
Last reviewed by the TeachTimer team · How we build and check our tools