What a 90 second timer is good for
Each suggestion opens in a space with a matching scene and alarm.
How to use the 90 second timer
- Press StartThe 90 second countdown begins at once. The Space bar starts and pauses it too; R resets it.
- Adjust as you goUse − and + to change it by 10 seconds, or click the digits and type any time, like 12:30, 1h30 or until 5:30pm.
- Hear the alarmA loud bell and beep rings at zero until you press Stop, with a vibration on phones. Pick a chime, a shorter ring or a silent glow under More.
- Make it yoursPick a scene and sound, press Fullscreen for a room-sized Clear view (Esc to exit), turn on notifications for a background tab, or add
?autostart=1to the link to start on load.
Shortcuts
Single-key shortcuts can be switched off under More.
90 second timer at a glance
| Accuracy | Counts to an absolute finish time, so it stays exact in a background tab and after the device sleeps. How the timing is tested |
|---|---|
| Alarm | Loud bell & beep that rings until you press Stop, with the whole screen flooding sunrise-warm. Chime, bell, beep, a shorter ring or a silent glow under More. |
| Display | Large digits that never jitter, a progress horizon, and a fullscreen Clear view (or Daylight, for bright rooms) readable across a room. |
| Sound | Optional rain, ocean, fireplace, café, night, brown or white noise and a focus pad — made in your browser, faded out at zero. |
| Memory | A running or paused countdown survives a reload or a browser restart, saved on this device only. |
| Price | Free. No ads, no signup, nothing to install — and it works offline once visited. |
Other ways to time 90 seconds
The same countdown as a picture, a soundscape, a projector view or a video.
About the 90 second timer
Start a 90 second timer for HIIT rounds, planks, game countdowns, or quick challenges. Also written as a 90s timer, 90 sec timer, or 1.5 minute timer, with a sound alarm.
A 90 second countdown with a display large enough to read across a room, keyboard shortcuts, and an alarm at zero. Built for intervals, rest periods and game rounds — no ads, no signup.
TimerHub calculates remaining time from an absolute finish timestamp, so missed browser callbacks do not create drift. Read the timing accuracy methodology and reproducible tests.
90 second timer FAQ
How long is 90 seconds?
What can I use a 90 second timer for?
Does the timer work in the background?
Does the alarm sound when the timer finishes?
Can I make the timer fullscreen?
Can I use this 90 second timer on mobile?
Related timers
Build repeating work and rest rounds in the Interval Timer →