Plank Timer

How it works

Type hours, minutes and seconds — or tap a preset — and press Start. The timer keeps counting while you use another tab, and the tab title shows the time remaining. When it reaches zero it sounds an alarm, as long as the page is still open and your browser allows audio. Browser power-saving and background-tab restrictions may delay updates or prevent the alarm, so keep the page visible for anything important — see browser timing limitations for why. Pause and resume anytime, or Reset to start over. Space starts/pauses. On a computer, Pop out puts the countdown into a small window that floats above your other apps, so you can watch it while you work in something else (Chrome and Edge).

Counting down to a date or event instead? Make a countdown. Need to time how long something takes? Use the online stopwatch with lap times.

Teaching? Full screen fills a projector, Projector mode in the menu raises the contrast for the back row, and Space starts and pauses without hunting for a button. If you have built a lesson around a timed activity, we develop lesson plans with teachers and publish them free.