Countdown Timer
Free online countdown timer. Set a custom countdown from hours, minutes, or seconds with an alarm sound notification. Includes preset quick-start timers for common durations.
Set Time
Hours
Minutes
Seconds
00:00:00
How to Use the Countdown Timer
Set the desired hours, minutes, and seconds, then press Start. When the time reaches zero, an audible alarm will notify you. You can pause and resume at any time.
How to Use the Stopwatch
The stopwatch counts time upward from zero. Press Start to begin, use the Lap button to record split times, and Stop when you are done.
Frequently Asked Questions
Does it keep running if I switch tabs?
Yes, both the timer and stopwatch continue running even if you switch tabs or minimize your browser, because they are based on the system clock.
Can I mute the alarm?
Yes, when the countdown alarm sounds you can click the Reset button to stop it immediately.