Online Timer

Free countdown timer and stopwatch, directly in your browser.
No download required.

⏰ Time's up!
Your timer has finished.
05:00.00
Set Duration
h
:
m
:
s
Quick Timers
Timer Sound
soft & clear
Sonarclassic ping
Birdsnature sounds
Chimesoft chime
How to use this online timer
1
Enter a duration using hours, minutes, and seconds — or pick a quick timer preset.
2
Press Start to begin the countdown. Use Stopwatch mode to count up from zero.
3
Keep the tab open and your volume up — an alarm will sound when your timer finishes.

Free Online Countdown Timer & Stopwatch

AlarmO'Clock's online timer lets you count down from any duration — seconds, minutes or hours. Set a custom time or pick one of the quick presets, and the timer will alert you with a sound when it reaches zero. You can also extend by 1 minute if you need a little more time.

Switch to Stopwatch mode to measure elapsed time with lap splits. Great for workouts, cooking, studying, presentations, or any task where you need to track time precisely.