What a 45 minute timer is good for
Each suggestion opens in a space with a matching scene and alarm.
How to use the 45 minute timer
- Press StartThe 45 minute countdown begins at once. The Space bar starts and pauses it too; R resets it.
- Adjust as you goUse − and + to change it by 1 minute, 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.
45 minute 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 45 minutes
The same countdown as a picture, a soundscape, a projector view or a video.
About the 45 minute timer
Set a 45 minute countdown for classes, meetings, workouts, baking, or focused study. Works as a 45 min timer or timer 45 minutes with sound alerts.
A 45 minute timer that keeps counting in a background tab, shows the clock time it will finish at, and sounds an alarm at zero. Fullscreen for a class or meeting room, with optional rain or brown noise while it runs. 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.