20 Minute Timer
A ready-to-start 20-minute countdown. Press Start — the alarm sounds when time is up.
Pre-set to 20 minutes — a power nap or a reading session. Need a different length? Use the online timer or pick another preset below.
About this tool
This page is a 20-minute timer with nothing to configure: the duration is already set, so starting takes one click. Twenty minutes is the classic power-nap length — long enough to refresh you, short enough to wake before deep sleep makes you groggy. It is also a comfortable reading session and the outer length of a focused work block before a proper screen break.
The countdown runs in this browser tab and also shows in the tab title, so you can get on with other things and glance back. When it reaches zero you will hear an alarm tone and see the “Time's up!” message. Keep the tab open — a browser timer cannot ring from a closed tab — and use Pause or Reset at any point.
How to use it
- Press Start — the timer is already set to 20 minutes.
- Nap or read — 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 20 minute timer?
You don't need to set anything — this page is pre-set to 20 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 20 minute timer with alarm for a power nap, a reading session or a screen break?
Yes — it is a plain countdown with an audible alarm at zero, which works well for a power nap, a reading session or a screen break, and for anything else that takes 20 minutes.