05:00
Work
Rest
Rounds
Date
Time
Time is up
Turning this on asks your browser for permission once.
Paste that anywhere HTML is allowed. Free to use, no attribution required.
The countdown is anchored to a finish time, so it stays exact even if the tab is in the background. Press Test sound once so the browser lets audio play. Space starts and pauses, L takes a lap, R resets.
Ninety minutes is one full sleep cycle and the length of a football match. It is also the outer limit of sustained focus for most people before a real break is needed.
For a block this long, an alarm you will actually hear matters. Press Test sound once before you start so the browser allows audio to play.
A free online timer, stopwatch and countdown clock that runs entirely in your browser. No account, nothing to install.
It keeps working offline once loaded, and you can add it to your home screen like an app. Your settings stay in your own browser.
Press Voice control and allow microphone access, then speak normally. Your speech is handled by your browser's own speech service, and nothing is stored by this page. Allow the microphone once and switch this on once, and it stays on as you move around the whole site, in this tab or a new one. It switches itself off after an hour of not being used. The button always shows whether it is listening, and tapping it stops it for good.
Five thousand four hundred, an hour and a half.
A full sleep cycle runs roughly ninety minutes, so waking at the end of one tends to feel easier than waking in the middle of it. Cycle length varies between people and across a night, so treat it as a rough guide.
Press Test sound once at the start so the browser allows audio, and switch on the browser notification in the settings panel. For anything you truly cannot miss, set your phone's own alarm as well.