15 Minute Timer
A ready-to-start 15-minute countdown. Press Start — the alarm sounds when time is up.
Pre-set to 15 minutes — a classroom activity or a study block. Need a different length? Use the online timer or pick another preset below.
About this tool
This page is a 15-minute timer with nothing to configure: the duration is already set, so starting takes one click. Fifteen minutes is a standard classroom rotation slot and a common study-block length: a quarter of an hour divides the school and work day neatly, which is why timetables keep landing on it. It is also a typical timed-quiz length and a solid short-workout session.
While it runs, the remaining time appears in the browser tab title — handy when the timer is tucked behind other windows. The alarm at zero is generated by the browser itself, so it works offline once the page has loaded; just keep this tab open, because a closed tab cannot make a sound.
How to use it
- Press Start — the timer is already set to 15 minutes.
- Run the activity — the tab title shows the time left.
- The alarm sounds at zero. Press Reset to run it again.
Frequently asked questions
How do I set a 15 minute timer?
You don't need to set anything — this page is pre-set to 15 minutes. Just press Start.
Will the alarm work if I switch to another tab?
Yes, the countdown continues and shows in the tab title; the sound plays as long as this tab stays open somewhere in your browser.
Can I use this as a 15 minute timer with alarm for a classroom activity, a study block or a short workout?
Yes — it is a plain countdown with an audible alarm at zero, which works well for a classroom activity, a study block or a short workout, and for anything else that takes 15 minutes.