⏳Online Countdown Timer
Set a duration or count down to a specific date and time — with presets, alarm, and screen wake lock.
Free Online Countdown Timer — Set a Duration or Count Down to a Date
Need to count down to something? Our free online countdown timer does it cleanly. Set a duration in hours, minutes, and seconds, or pick a future date and time to count down to — then press start and watch a big, easy-to-read display tick toward zero. When time's up, a clear alarm sounds, even if the tab is in the background, so you never miss it.
It's built to be effortless: quick presets cover common times like 5, 10, and 30 minutes, you can pause and resume whenever you need, and the screen stays awake so the timer doesn't cut out mid-countdown. Add a label to remember what each timer is for, or set it to repeat. Whether you're cooking, studying, running a meeting, timing a workout break, or counting down to an event, it keeps things on track at a glance.
Simply set a time and press start. No sign-up, no downloads, no limits — just a clean countdown timer online whenever you need it.
About the Online Countdown Timer
Two modes
Duration mode
Set hours, minutes, and seconds manually, or tap a quick preset (1, 3, 5, 10, 30, 60 min). Ideal for cooking, study sessions, workouts, and meetings.
Target Date mode
Pick any future date and time and watch the timer count down to that moment. Shows days remaining when the target is more than 24 hours away. Ideal for events, deadlines, and launches.
Key features
Audio alarm
A three-beep alarm plays via Web Audio API when the timer hits zero — works even if the tab is in the background.
Screen wake lock
On supported browsers, prevents the screen from turning off while the timer is running. Degrades gracefully where unsupported.
Pause & resume
Freeze the countdown at any point and pick up exactly where you left off — no drift, no restart needed.
Drift-free engine
Uses wall-clock timestamps (Date.now) rather than accumulated intervals, so it stays accurate over long runs.
Optional label
Add a name to remind yourself what each timer is for — "Tea", "Pomodoro", "Meeting". Shown on the display while running.
Auto-repeat
Enable Repeat and the timer automatically restarts after each completion — useful for intervals and repeated work blocks.
Common uses
Cooking
Set a boil or bake time, leave the tab running, and the alarm sounds when it's done.
Studying
Time focused work blocks and breaks without watching a clock — pair with auto-repeat for Pomodoro-style sessions.
Meetings & presentations
Keep talks on schedule with a visible countdown that the whole room can see.
Events & deadlines
Count down to a launch, release, or deadline in Target Date mode — shows days, hours, minutes, and seconds.
Frequently Asked Questions
How does the countdown timer work?
Set a duration in hours, minutes, and seconds (or choose a future date and time in Target Date mode), then press Start. A large display counts down to zero, then sounds an alarm. You can pause, resume, or reset at any time.
Is the countdown timer free to use?
Completely free — no sign-up, no downloads, no limits. Use it as many times as you like on any device.
Can I count down to a specific date and time?
Yes. Switch to Target Date mode, pick any future date and time, and the timer counts down to that moment — showing days remaining when the target is more than 24 hours away.
Does the timer have an alarm sound?
Yes, an audio alarm plays when the timer reaches zero. It uses the Web Audio API, so it works even if the tab is in the background — as long as the browser tab remains open.
Will the timer keep running if I switch tabs or lock my screen?
The countdown engine keeps accurate time regardless of tab focus. On supported browsers, a screen wake lock keeps the display on while the timer runs. The alarm still fires when the timer ends.
Can I pause and resume the timer?
Yes. Press Pause at any time to freeze the countdown, then Resume to continue exactly where it left off. The timer picks up from the remaining time without any drift.
What are the quick presets for?
The preset buttons (1, 3, 5, 10, 30, 60 minutes) let you set common countdown durations in one tap — useful for cooking, studying, or taking a break without typing a value each time.
Can I label the timer or set it to repeat?
Yes. Add a label (like "Tea" or "Meeting") to remind yourself what the timer is for. Enable Repeat and the timer automatically restarts when it finishes — useful for interval training or repeated work sessions.
Is any data stored or sent anywhere?
No. Everything runs entirely in your browser. Nothing is stored, sent to a server, or logged anywhere. Close the tab and all state is gone.
Does the countdown timer work on mobile?
Yes. The timer is fully responsive with a large legible display and big tap targets. It works on phones, tablets, and desktops without any installation.