45 minute timer
A free 45 minute timer that starts with one click. Big, clear digits, a progress ring, a loud alarm you can choose, and a countdown that keeps going in your tab title. Also searched as 45 min timer, timer 45 minutes.
What a 45 minute timer is good for
- A typical school lesson
- A long‑form deep‑work block
- A full gym session
- Slow‑roasting potatoes
- A long nap cycle (sleep inertia warning)
How to use it
- Start / pause: click Start or press Space.
- Reset: press R.
- Fullscreen: press F for a wall‑size display.
- Repeat: tick Repeat for back‑to‑back intervals.
- Alarm: pick Beep, Bell or Chime — or Silent with a desktop notification.
Tip: Set Sound to Bell for a gentler alarm that still carries across a room.
Frequently asked questions
How do I start the 45 minute timer?
Press the Start button or hit the Space bar. The 45 minute countdown begins immediately and an alarm sounds when it reaches zero. Press Space again to pause.
Will the 45 minute timer keep running if I switch tabs?
Yes. The remaining time is shown in the tab title, and if you reload the page the timer resumes from where it was. Turn on Notify to get a desktop notification when it ends.
Can I change the 45 minute timer to a custom time?
Yes. Click the digits to edit hours, minutes and seconds, or press a number key from 1 to 9 to set that many minutes. You can also open any page with ?m=12&s=30 in the address bar.
Does this timer work on a phone?
It works in any modern browser on iPhone, Android, tablets and desktops, with no app or sign‑up. Keep the screen on for the alarm to sound on mobile.
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