About this 40 minute timer
A standard class period in some schools. Also perfect for bread first rise and moderate jogging sessions.
Press start and the timer shows exactly when your 40 minutes will be up. It rings at zero, goes full screen for classrooms and kitchens, and remembers where it was if you refresh the page.
What people use a 40 minute timer for
- Class periods in many schools
- Brown rice
- Moderate runs
- First bread rise checks
40 minutes at a glance
| In seconds | 2,400 seconds |
|---|---|
| Halfway point | 20 minutes |
| Start now and it ends at | — |
How to use the 40 minute timer
- The timer is ready at 40:00. Tap Edit time to change it.
- Press Start Timer (or the space bar). The finish time appears under the digits.
- Press Full screen to fill the screen — handy for classrooms, meetings and kitchens.
- When it reaches zero an alarm plays until you press Stop Alarm.
Keyboard shortcuts
- Space start / pause
- R reset
- F full screen
- M mute
Frequently asked questions
How many seconds are in 40 minutes?
40 minutes is 2,400 seconds.
How do I set a 40 minute timer?
Press Start Timer — it is already set to 40:00. To change the length, tap Edit time, enter hours, minutes and seconds, then press Set. You can also add a minute at any point with +1 min.
Will the timer keep running if I refresh or close the tab?
Yes. The end time is saved in your browser, so reopening this page shows the correct time left. To hear the alarm, keep the tab open and your device's sound on.
Does the timer work on a phone?
Yes. It runs in any modern mobile browser with no app or sign-up, and it asks your phone to keep the screen awake while it runs.