1 Hour Timer
A 1 hour timer that is ready to go. Press Start, or the space bar, and it counts down 1 hour and then sounds the alarm.
1 hour
Spacestart / pauseRresetFfull screen+ −add or remove a minute0–9type a time
Good for 1 hour
- One hour — long enough that the end time matters more than the countdown. It is shown under the digits once you start.
- A typical length for a class, an exam section, a workout or a meeting.
Other timers
Questions people ask
Will the 1 hour timer still go off if I switch tabs?
Yes. The end time is fixed when you press Start, so the countdown stays correct in a background tab and the alarm sounds on time as long as the tab stays open. If you turn on “Notify me”, you also get a notification.
What happens if I close the page or my computer sleeps?
The end time is saved on this device. Reopen the page and the timer shows the correct time left, or tells you how long ago it finished. A closed tab or a sleeping device cannot play the alarm.
Can I change it from 1 hour?
Yes. Use the + and − steppers or type a new time, press + or − on a keyboard to add or remove a minute, or open the main timer to save your own presets.