90 Minute Timer
This free 90 minute timer is ready to go — the countdown is already set to 1 hour 30 minutes. Just press Start and watch it tick down. When it reaches zero a built-in alarm sound plays. No download, no signup; works on desktop and mobile.
What is this timer good for?
- A deep-work or Pomodoro-style focus block
- A revision or reading session before a rest
- Marinating, proofing dough or slow-roasting
- A full workout or class with warm-up and cooldown
- A longer nap or rest period
How to use it
- The timer opens preset to 1 hour 30 minutes.
- Adjust the hours, minutes or seconds for a different length.
- Press Start and the big display counts down.
- An alarm sounds at 00:00:00 — press Reset to run it again.
How long is 1 hour 30 minutes?
90 minutes works out to 1 hour and 30 minutes (about 1.50 hours), or 5,400 seconds in total. That is roughly 6.2% of a 24-hour day. Half of 1 hour 30 minutes is 45 minutes, and two rounds back to back add up to 3 hours.
Ninety minutes is one complete sleep cycle and a full football match.
Things that take about 1 hour 30 minutes
- A block of 1 hour 30 minutes comfortably covers a sports match or a full training session.
- Proof bread dough for around 1 hour 30 minutes in a warm kitchen.
- Protect a 90-minute deep-work session for a report, essay or coding task — plan a stretch break inside it.
- Track a 90-minute parking meter, laundry cycle or delivery window so you get back in time.
FAQ
Will it ring if I switch tabs?
Yes. The timer calibrates against your system clock, so it stays accurate even in a background tab. Just don't close the tab.
Do I need to download anything?
No. The timer runs entirely in your browser with no download, signup or plugin.
Can I change the duration?
Yes. Type any hours, minutes and seconds into the fields, or pick a related timer above.
Is it free?
Yes, it is completely free to use.
How many seconds are in 90 minutes?
90 minutes equals exactly 5,400 seconds (90 × 60).
How long is 90 minutes in hours?
90 minutes is 1 hour and 30 minutes, or about 1.50 hours.
Can I pause the 90-minute timer halfway through?
Yes. Press Pause at any point and Start to continue; the remaining part of the 1 hour 30 minutes is kept to the second.