The alert sound is inaudible
Use Test sound and check tab and computer mute settings and the audio output device. Sleep or background restrictions may delay alerts.
Timer
Set a study, presentation, or meeting timer and view the remaining time on a large display.
Ready
00:00:00
Space: Start/Pause · R: Reset · F: Fullscreen
Closing or refreshing the tab resets your records. Sleep and screen lock may delay alerts. Changing the computer clock may affect measurements.
How to use
- 01
Set a duration
Enter hours, minutes, and seconds, or choose a preset from 1 to 120 minutes.
- 02
Start the timer
Test the end alert sound, then start. You can pause and resume.
- 03
Check the remaining time
Switch to fullscreen if needed. When time is up, dismiss the alert or reset.
Troubleshooting
Frequently asked questions
How do I use fullscreen?
Use the Fullscreen button or F key. Press Esc to exit. If unsupported, maximize your browser window.
Can I switch tabs or lock my computer?
The display accounts for the elapsed time when you return. Sleep and background restrictions may delay sound and end alerts. Do not rely on this tool for critical alarms.
There is no sound
Use Test sound first. Check tab and computer mute settings and the selected audio output device.
Tested example
Input and settings
Start a timer for 0 hours, 0 minutes and 1 second
Observed result
The completion state was displayed
What to check
Background tabs and power saving can affect alert timing.
Examples use synthetic, non-personal test material. Results apply to the inputs and settings shown; different files and devices can produce different sizes, timing and appearance.