Good uses for a 40 minute timer
- A lesson period (many schools use 40 to 50 minutes)
- A long workout or swim
- Roasting a chicken piece or baking bread
- An exam practice paper section
- A deep-work session
- A meeting with a hard stop
Tips
- Put the timer in full screen on a classroom board; the blocks are readable from the back.
- Choose a quieter sound for exams: Soft or Bell at a low volume.
- Leave the tab open: a closed tab cannot sound the alarm. Open the page again and the timer comes back with the same end time.
40 minutes in other units
| Unit | 40 minutes |
|---|---|
| Minutes | 40 |
| Seconds | 2,400 |
| Hours | 0.667 |
| Milliseconds | 2,400,000 |
Questions and answers
How many seconds is 40 minutes?
2,400 seconds, or two thirds of an hour.
Can students see how much time is left without numbers?
Yes. Open View and choose Hide under Numbers; the 5-minute blocks show the time left.
Does the timer keep running if I switch tabs?
Yes. TimerNook works out the time left from your device clock and a fixed end time, not by counting ticks, so a background tab is still right. While a timer runs, the page also plays a tone too quiet to hear, so the browser keeps the tab awake; your browser may show a speaker icon on the tab. If you also tick "Notify me", you get a system notification at the end.
Will the alarm ring if my phone screen locks?
Not always. Phone browsers can pause web pages when the screen locks, and an iPhone on silent can mute browser sound. Keep the screen on; while the timer runs TimerNook asks the browser to keep the screen awake where that is supported. If the page was paused, the alarm rings as soon as you return.