Set the timer to 139 minutes

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How to use the online timer

Keeping track of a 139 minutes fasting or eating window is easier with a timer running than trying to remember what time you started. Set it the moment your window opens or closes, check back whenever you like without resetting anything, and let it count down in a browser tab you can leave open on your phone or computer. No app, no account, just the number you need.

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.

A phone timer works fine until a call comes in or a notification steals the screen at the worst moment. Running it in a browser tab keeps it separate from all that, ticking away quietly in the background of your computer or phone without competing for attention until it's done. There's nothing to install and nothing to sign up for, just a page that does one job well. Set a timer for 139 minutes, set the timer to 139 minutes, start a 139 minutes timer — it is the same countdown either way.

Common questions

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.

Will the timer still run if my laptop goes to sleep?

No, if the device sleeps or the browser is suspended, the countdown pauses along with it, so keep your screen awake for an accurate result.