90 Minute Timer (1.5 Hours)

90 minutes = 5,400 seconds = 1 hour 30 minutes

01 : 30 : 00

 

About this 90 minute timer

A full sleep cycle average and feature film length. 90 minutes matches the body's natural ultradian rhythm attention cycle for optimal focus.

Press start and the timer shows exactly when your 90 minutes will be up. It rings at zero, goes full screen for classrooms and kitchens, and remembers where it was if you refresh the page.

What people use a 90 minute timer for

  • A full sleep cycle nap
  • Ultradian-rhythm deep work blocks
  • Feature-length films
  • Football (soccer) match length

90 minutes at a glance

In seconds5,400 seconds
In hours1 hour 30 minutes
Halfway point45 minutes
Share of a day6.25%
Start now and it ends at—

How to use the 90 minute timer

  1. The timer is ready at 1:30:00. Tap Edit time to change it.
  2. Press Start Timer (or the space bar). The finish time appears under the digits.
  3. Press Full screen to fill the screen — handy for classrooms, meetings and kitchens.
  4. When it reaches zero an alarm plays until you press Stop Alarm.

Keyboard shortcuts

  • Space start / pause
  • R reset
  • F full screen
  • M mute

Frequently asked questions

How many seconds are in 90 minutes?

90 minutes is 5,400 seconds.

How do I set a 90 minute timer?

Press Start Timer — it is already set to 1:30:00. To change the length, tap Edit time, enter hours, minutes and seconds, then press Set. You can also add a minute at any point with +1 min.

Will the timer keep running if I refresh or close the tab?

Yes. The end time is saved in your browser, so reopening this page shows the correct time left. To hear the alarm, keep the tab open and your device's sound on.

Does the timer work on a phone?

Yes. It runs in any modern mobile browser with no app or sign-up, and it asks your phone to keep the screen awake while it runs.

Related timers

Deep Work Timer Power Nap Timer 75 Minute Timer 80 Minute Timer 2 Hour Timer 3 Hour Timer

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