How to use the online timer
Rest periods matter as much as the work itself, and 153 seconds is a common gap between rounds in a lot of interval training. Start it the moment you finish a set, use the time to catch your breath and grab some water, and get ready to go again as soon as it counts down to zero. Watching a clock never feels as precise as letting the timer call it.
Getting started takes one click: press Start and the countdown begins straight away, with pause and reset both on hand if you need to adjust on the fly. Because it's running in your browser, the tab has to stay open for the whole time; minimising the window is fine, but closing it or shutting your device down will stop the clock. A sound plays at the end so you know.
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. People type this as set timer 153 seconds or timer for 153 seconds; both land here and start the same count.
Common questions
Can I run more than one timer at once?
Yes, opening the page in separate tabs lets you track a few things at the same time, each counting down independently of the others.
Do I need to install anything to use the timer?
No. It runs straight in your browser, so there's nothing to download and no account to create.
Will the timer keep running if I close the tab?
No. Closing the tab or the browser stops the countdown, so leave it open until the timer finishes.
Can I use the timer on my phone?
Yes. It works in any mobile browser, though the tab still needs to stay open rather than sitting behind other apps for a reliable count.
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