100 minute timer
Plenty of time, clearly counted. Your 100-minute countdown is ready.
Ready
Hours : Minutes : Seconds
Keep this tab open for the alarm.
Related timers
How to use this 100 minute timer
Get started in four simple steps.
Choose your sound
Pick one of seven alarm sounds or Off, and use Test sound to check the volume.
Start
Press Start timer when you are ready. Opening this page never starts the countdown by itself.
Pause when needed
Pause and resume at any time. Reset restores the full 100 minutes.
Time’s up
At zero the page shows Time’s up and tries to play your alarm for up to 10 seconds.
100 minute timer at a glance
- Total seconds
- 6,000
- Starts at
- 01:40:00
- Half-way mark
- 00:50:00
100 minutes is 6,000 seconds, or 1 hour 40 minutes. For timers of several hours, keep the device plugged in and the page open. A browser may pause pages on a sleeping device, so a separate alarm clock is more dependable for very long waits.
What time will it be in 100 minutes?
If you start now, the timer ends at 4:40 PM.
The time above is read from your device clock and updates every second (without JavaScript it shows an example start of 3:00 PM). For other spans, use the time from now calculator or the hours to days converter.
Frequently asked questions
Still have a question? Get in touch
How many seconds are in 100 minutes?
100 minutes is 6,000 seconds, or 1 hour 40 minutes. The timer shows it as 01:40:00 when it is ready to start.
Can I pause the 100 minute timer?
Yes. Pause holds the remaining time and Resume continues from there. Reset returns to the full 100 minutes, and asks first while the timer is running.
Will the alarm work if I leave this tab?
Keep the tab open. Switching to another tab is usually fine, but browsers can slow down pages in the background and may block sound that was never enabled. For the best chance of hearing the alarm, keep this page open and visible and press Test sound first. Closing the tab stops the alarm.