90 Second Timer
This free 90 second timer counts down 90 seconds (90 seconds) and rings an alarm at zero. It is already set — press Start or the space bar and it begins. It keeps time in a background tab, and full screen makes the digits big enough to read across a room.
Tap anywhere to turn the alarm sound back on.
Set the time
Pause or reset the timer to change the time.
90 seconds at a glance
| Duration | 90 seconds |
|---|---|
| On the clock | 0:01:30 (h:mm:ss) |
| In seconds | 90 |
| In milliseconds | 90,000 |
| In hours | 0.025 |
| Share of a day | 0.1% |
| Start now, ends at | — |
What is a 90 second timer good for?
Ninety seconds is a typical rest between heavy strength sets and a common reheat time for a microwave meal.
- Rest between strength-training sets (60–90 seconds is a common range)
- Reheating food in the microwave
- Lightning talks and quick stand-up updates
- A first, short infusion of green or white tea
How to use the 90 second timer
Press Start
The timer is already set to 90 seconds. Press Start or Space.
Watch the ring
The ring empties as time passes, and the tab title counts down with it so you can check from another tab.
Adjust if you need to
Pause any time, press +1 min to add a minute, or change the time in the panel.
Stop the alarm
At zero the alarm rings. Press Stop alarm or Esc, or +1 min to snooze.
Other quick timers
One click starts the countdown — every preset rings an alarm, works full screen and keeps time in a background tab.
Frequently asked questions
How do I start a 90 second timer?
Press Start (or the space bar) on this page — the timer is already set to 90 seconds. When it reaches zero the alarm rings until you stop it or the ring time you chose runs out.
How many minutes is 90 seconds?
90 seconds is 1.5 minutes, or 90,000 milliseconds.
Will the 90 second timer ring if I switch tabs?
Yes. The alarm is scheduled ahead on your browser’s audio clock, so background-tab throttling cannot delay it. Turn on notifications in the panel to get a pop-up too. If you reload the page, it keeps counting from where it was.
Can I pause the timer or add more time?
Yes. Pause stops the countdown and Start resumes it. +1 min (or the + key) adds a minute, and after the alarm it starts a one-minute snooze. To set a different length, use the time boxes, the number pad, or one of the other quick timers.
More free timing tools
Last reviewed October 31, 2026