This timer keeps time against your device clock instead of counting ticks, so it stays accurate even if the browser tab is throttled in the background. Nothing is uploaded: the countdown, the presets and the end alarm all run entirely in your browser, so it works offline once the page has loaded.
Countdown Timer
Runs entirely in your browser - no upload, no sign-up.
Type MM:SS or HH:MM:SS, or a value like 25 min. A plain number means minutes.
05:00
Ready
What is a countdown timer?
A countdown timer counts down from a duration you set - like 5:00 or 25 minutes - to zero, then sounds an alarm. Type a time or tap a preset, press Start, and watch a large clock and progress ring track the time left. Pause, resume or reset whenever you need.
How to use
- 1Set the duration. Type a time like 5:00, 25 min or 1:30:00, or tap a preset chip such as 5:00 or 25:00. A plain number is read as minutes.
- 2Press Start. The clock counts down and the ring fills as time passes. Use Pause to hold and Resume to continue exactly where you left off.
- 3Hear the alarm. At zero the timer flashes and plays a short beep. Press Reset to run the same duration again, or set a new one.
Who it's for
- Cooking and baking - set a kitchen timer for pasta, eggs or a bake and get an alarm the moment it's done, no phone app needed.
- Focused work and studying - run a 25-minute focus block, then a short break, straight from a browser tab.
- Workouts and intervals - time rounds, rests or a plank with a clear on-screen clock and an audible cue at zero.
- Meetings and presentations - keep a talk or a timed exercise on schedule with a big, glanceable countdown.
FAQ
Is the countdown timer free?
Yes - it's 100% free with no sign-up, no limits and no download. It runs entirely in your browser.
Will it keep accurate time if I switch tabs?
Yes. It tracks a fixed end moment from your device clock rather than counting ticks, so backgrounding or throttling the tab doesn't cause drift. The alarm still fires when you return to the tab.
Does the alarm need a sound file or the internet?
No. The end-of-timer beep is generated in your browser with the Web Audio API, so there is no audio file to load and it works offline. You can turn the alarm off with the checkbox.
What duration formats can I enter?
Type MM:SS (5:00), HH:MM:SS (1:30:00), or unit forms like 25 min, 90 sec or 1h 30m. A plain number such as 25 is read as minutes, matching a kitchen timer.
Can I pause and resume the countdown?
Yes. Pause freezes the exact time remaining and Resume continues from there with no lost or gained seconds. Reset returns the clock to the full duration you set.