Good uses for a 90 minute timer
- A 90-minute deep-work block
- A football match (two 45-minute halves)
- A film or long exam
- Slow roasting or baking bread
- A long study session
- Charging or drying something with a set time
Tips
- For a long focus block, set the sound to Bell so the end is clear but not harsh.
- Keep the screen on for phones; a locked phone can pause the browser.
- Use Copy link to keep this 1:30:00 timer.
90 minutes in other units
| Unit | 90 minutes |
|---|---|
| Minutes | 90 |
| Seconds | 5,400 |
| Hours | 1.5 |
| Milliseconds | 5,400,000 |
Questions and answers
How many minutes is 1.5 hours?
90 minutes, or 5,400 seconds.
Will a 90-minute timer drift in a background tab?
No. It reads your device clock against a fixed end time, so background tabs stay right, and the alarm is booked when you press Start.
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.