How to use this timer
- Press Start timer to begin the pre-set countdown.
- Pause, add a minute, or enter fullscreen whenever you need.
- Keep the page available and listen for the chime at zero.
A clean 1 hour countdown for moments that need a clear boundary. Start it in one click, keep working in another tab, and return when the original chime lets you know time is up.
A 1 hour timer is a useful fit for:
Yes. It calculates remaining time from a target timestamp, so switching tabs does not create countdown drift.
Yes, after you use Test Sound or start the timer with a user click. Browser audio permissions can affect alerts.
No. The timer runs locally in a modern web browser with no signup.