40 minutes timer
40 minutes countdown with alarm.
Timer
40:00
Quick presets
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This timer is set to 40 minutes. That is 2,400 seconds, 0.67 hours, 2,400,000 milliseconds. 1.5 timers like this fit in one hour and 36 in a day.
During 40 minutes a resting heart beats about 2,800 times and a person walks roughly 3,200 metres at an easy pace.
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What is a 40 minutes timer good for?
- a class or meeting with a hard stop
- baking a cake
- a full workout
How to use it
Press the space bar or the Start button. When it reaches zero your chosen sound plays; on the main timer page you can add and chain several timers for intervals. Sound and volume settings are saved in your browser.
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Frequently asked questions
40 minutes equals 2,400 seconds.
Press Start: the time is already set. You can pause it, reset it, change the sound or go full screen.
Yes. The timer keeps running in the background and rings when it ends as long as the page stays open; the tab title shows the time left.
In supported browsers the "Keep the screen on" option uses the Wake Lock API to prevent it.