90 minute timer
1:30:00
Press Start or the space bar.
1 hour 30 minutes at a glance
- On the timer
- 1:30:00
- Seconds
- 5,400
- Minutes
- 90
- Hours
- 1.5
- ISO 8601 duration
PT1H30M- Share of a day
- 6.25 %
- Back to back in 24 hours
- 16
When a 90 minute timer ends
The line under the timer shows the end time for your clock as soon as the page opens. For planning, here is where 1 hour 30 minutes lands from some common start times:
| Start | Ends |
|---|---|
| 7:00 AM | 8:30 AM |
| 9:00 AM | 10:30 AM |
| 12:00 PM | 1:30 PM |
| 3:30 PM | 5:00 PM |
| 5:45 PM | 7:15 PM |
| 10:30 PM | 12:00 AM (next day) |
| 11:50 PM | 1:20 AM (next day) |
1 hour 30 minutes is longer than many computers’ and phones’ sleep settings. A sleeping device runs no web pages, so plug in and keep the screen on for this one. If the device does sleep, the timer is still right when it wakes, because it counts down to a fixed end time instead of counting ticks, and it rings at once if that time has passed.
A daylight saving change does not shorten or lengthen the timer: it measures 1 hour 30 minutes of real time. What changes is the clock reading at the end. On the night clocks go back an hour (2:00 AM daylight time becomes 1:00 AM standard time in the US), a 90 minute timer started at 1:30 AM ends when the clock shows 2:00 AM, not one hour later. If you need something to happen at a clock time, use an alarm instead.
90 minutes is the regulation playing time of an association football (soccer) match, two halves of 45 minutes; stoppage time is added by the referee, so a real match runs longer. For two halves with a break, use the Intervals mode: work 45:00, rest 15:00, 2 rounds.
Questions
How do I set a timer for 1 hour 30 minutes?
How many seconds is 1 hour 30 minutes?
PT1H30M.