20 minute timer

Twenty minutes is a solid study block when you're just building the habit. It's long enough to read something carefully and take notes, and short enough that it doesn't turn into a marathon you'll put off tomorrow.

Lots of people use twenty minutes for a short nap. The idea is to rest without dropping into deep sleep, which tends to leave you groggy. Lie down, start the timer and don't bargain with the alarm.

In the kitchen, twenty minutes covers plenty of things in the oven or on the stove. With a visible timer, you can do something else without forgetting the pan.

Tap Start. The countdown keeps going even if you switch tabs or lock your computer, because it uses your device's clock rather than a counter that can drift. The tab title shows the time left, so you can see it at a glance.

Need more time? Tap +1 min without stopping. Just want a big clock? Tap Full screen. At the end you'll hear a short beep and, on phones, feel a vibration when the browser allows it.