Online timer
Tap the time to change it
A countdown timer that works as soon as the page loads. Pick a preset or tap the time to type your own, press Start, and an alarm rings when it reaches zero.
The tab title shows the time left, so you can keep an eye on it from another tab.
Press F or the fullscreen button to fill the screen. The screen stays awake while the timer runs, so it reads well on a projector, a TV or a phone propped up in the kitchen.
The countdown is worked out from the clock, not by counting ticks, so it stays exact in a background tab. Reload the page and a running timer carries on where it was.
Questions
How do I set a timer?
Tap a preset such as 5 min or 10 min, or tap the big time and type your own: 25 for 25 minutes, 1:30 for a minute and a half. Then press Start or the Space bar.
Will the alarm ring if the tab is in the background?
Yes. The timer keeps counting in a background tab and plays the alarm when it ends, as long as the tab stays open and your device isn't muted. The tab title also shows the time left.
Does the screen stay on?
While the timer runs, the page asks your browser to keep the screen awake. This works in current Chrome, Edge, Safari and Firefox. In older browsers, your normal screen lock still applies.
Can I go fullscreen on an iPhone?
iPhone Safari doesn't let web pages go fully fullscreen, so the timer fills the browser window instead. For the cleanest view, add the page to your Home Screen and open it from there.
Is it free?
Yes. There's no sign-up, no ads and nothing to install. The timer runs entirely in your browser.