When a full hour is the right block
An hour sits between the shorter presets and the longer ones. The 30 minute timer suits a quick task, and the 2 hour timer fits a long session. Pick this one when the work needs a real block but not a whole afternoon.
This timer counts down from 60 minutes using your computer's clock. It reads the current time and works out what is left, so it stays correct when the tab is in the background or the device sleeps. The display refreshes several times a second. The tab title shows the remaining time, so you can read it from another tab. A tone plays at the end, and you can pick beeps, a chime, or silent with a flashing tab title.
Common things people time at this length:
- A meeting or class block that runs the full hour.
- A parking meter or laundry cycle that allows about 60 minutes.
- A long study or reading session split into one sitting.
- A timed practice run for a test section that lasts an hour.
Keeping the hour honest
An hour is 60 minutes, or 3600 seconds. If you type 1.5 into a time field, that means 1 hour 30 minutes, not 1 hour 50 minutes. Decimal hours work by dividing minutes by 60, so 0:45 is 0.75 hours.
The countdown does not drift when the tab is hidden. It checks the clock instead of counting ticks, so a slow browser or a sleeping laptop will not add or lose seconds. If you reload the page while the timer runs, the end time is stored in the browser for that tab, and the countdown picks up where it should.
You can start and pause with the space bar. The full-screen button shows only the clock, which helps in a classroom or at a desk. When the hour ends, the alarm is generated in the browser, so no file downloads.