About This Tool
A simple online Countdown Timer — set any duration in hours, minutes and seconds and get an alert when time is up.
Frequently Asked Questions
Does the countdown stay accurate if I switch tabs?
Yes, the timer tracks real elapsed time so it stays accurate even when the tab is in the background.
Will I get an alert when the timer ends?
Yes, when the countdown reaches zero the display flashes and a browser alert is shown.
Can I set a countdown longer than 1 hour?
Yes, enter any number of hours, minutes and seconds with no maximum limit.