90 Minute Timer
What a 90 minute timer is good for
People use this timer for a full sleep-cycle nap, a long exam and watching a film. A 90-minute nap covers about one full sleep cycle, so you are more likely to wake from light sleep.
How it works
Under the digits you see the clock time when the timer ends. Need a little longer? Tap +1 min while it runs. Switch between numbers, a progress ring, a visual disc and a sand timer.
Space starts and pauses, R resets and F opens fullscreen. The screen stays on, and the timer follows the real clock, so it stays accurate when the tab is in the background.
Questions
How do I set a 90 minute timer?
Press Start on this page: the timer is already set to 90 minutes. To change it, tap the digits or pick another preset.
Is there a 90 minute timer with sound?
Yes. Pick one of several alarm sounds and a volume, and turn on repeat until stopped so you do not miss it.
Will it ring in a background tab?
Yes. The countdown follows the system clock and the alarm rings even if you switch tabs. Keep the tab open.
How many seconds is 90 minutes?
90 minutes is 5400 seconds.