Online Countdown Timer — Free Browser Timer with Custom Sounds
00:00:00
Set a duration below
Shortcuts: Space Start/Pause · R Reset · Esc Stop alarm
Quick presets
Common timer durations — one click to start.
About the online timer
This timer counts down from your chosen duration and rings an alarm when it reaches zero. Use it for cooking, workouts, meditation, study sprints, or anywhere you need a deadline.
Will it run in the background?
Yes. Browsers throttle inactive tabs but timer accuracy is maintained — we calculate against the real wall-clock time, not just internal tick counts.
Pomodoro technique
The popular Pomodoro Technique uses a 25-minute focused work timer followed by a 5-minute break, repeated four times before a longer 15–30 minute break. Pre-select 25:00 or 5:00 above.