Set the timer to 38 seconds

00:00:00

How to use the online timer

Interval sprints live or die on accurate timing, and 38 seconds is a common burst length whether you're doing suicides on the court or sprint efforts on the footpath. Tap start right before you take off, and let the sound tell you when to ease up instead of glancing at your watch mid-stride. It keeps every rep honest and stops the last few seconds turning into a guess.

Press Start and away it goes, counting down on its own without needing you to babysit it every few seconds. The only real rule is keeping this browser tab open, since the countdown pauses along with the page if you close it or shut the browser down entirely. Right at zero, a sound plays to let you know time's up, clear enough to hear from the next room over.

Unlike a mechanical kitchen timer, this one doesn't need winding, batteries, or a spot on the bench where you'll remember to look at it. It sits in a browser tab, which means you can check it from your laptop, your phone, or any device with a browser without owning a gadget for it. Minimise the window and it keeps counting; just don't close the tab. If you would rather say put a timer on for 38 seconds, that works too — press Start and the page does the rest.

Common questions

Does the timer make a sound when it finishes?

Yes, an alarm plays once it reaches zero, provided your device's volume is turned up and the tab hasn't been muted.

Can I pause the timer partway through?

Yes, pause and resume are both available, so you can stop the count if you're interrupted and pick up again exactly where you left off.

Can I set a custom time instead of the preset?

Yes, most pages let you adjust the minutes and seconds directly, so you're not limited to the exact length shown in the page title.

Does the timer work without an internet connection?

The page needs to load once, but the countdown itself runs locally in your browser, so a dropped connection partway through won't stop it.