Online timer
Run up to 5 timers together. Provides preset options for 1·5·10·25 minutes, individual time stops, optional stop sounds, and recording saving.
Remaining time
Waiting
Set time and name
Set before starting. To change, reset. Other timers continue to operate.
Records are lost when refreshing or navigating pages. Sounds may be delayed or absent during screen lock or background mode.
Total timer
No records yet.
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How to use and criteria
It is a tool that performs multiple counting independently due to differences in device time.
Actual example
If a 5-minute timer starts and stops after 2 minutes, about 3 minutes remain. Continue after excluding the paused time. Adding a second 10-minute timer does not affect the first timer.
Changing the device time may affect the measurement values. Due to browser shutdown, power saving, and notification restrictions, use the device alarm for important appointments.
Frequently Asked Questions
How many at a time can be executed?
Up to 5 pieces, each set between 1 second and 24 hours. Changing the current timer continues other timers, and the remaining time in the total list can be viewed.
Does an alert appear when it ends?
Informs with the page’s completion status and selected end sound. No browser or OS notifications are sent; screen lock or background mode may cause delay.
What happens if you change or delete time?
Before starting, you can change minutes, seconds, and presets. Timers that have started must be reset to change settings, and deletion/reset do not affect other timers.
Calculation criteria and reference materials
- MDN — Background tab time handling
Refreshing the screen for hidden tabs and timer limits. No guarantee for notifications like device alarms.
Verification of calculation criteria: · Calculation·verification principles · Report errors