12 Hour Timer
Set a timer for 12 hours. Press Start or the Space bar.
Ready
Sound off
About 12 hours
Start now and it ends at--:--Your time
12 hours is43,200 s12 hours
Often used forHalf a day: medication spacing reminders or long cooks.
Need the clock time instead? What time is 12 hours from now
How to use the 12 hours timer
- The timer is already set to 12:00:00. Press Start, or the Space bar.
- Need a little more? Press +1 min while it runs, or pick 10 hours or 24 hours.
- When the alarm rings, press Stop alarm. It stops by itself after 60 seconds unless you change that in Timer settings.
Questions
How do I set a 12 hours timer?
This page is already set to 12 hours. Press Start or the Space bar. To change it, type new numbers into the digits or pick a nearby duration.
Will it ring if the tab is in the background?
Yes. The alarm is scheduled the moment you press Start, so it rings on time even in another tab. Keep the device awake and the volume up.
Can I make it full screen?
Yes. Press the full-screen button or the F key. The digits fill the screen and the controls hide until you move the mouse or tap.