Countdown Timer
Count down a set time or to a specific date, with an alarm sound and optional notification when it finishes.
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What does the Countdown Timer do?
Use quick presets (1, 3, 5, 10, 15, 25, 30 or 60 minutes) or enter hours, minutes and seconds — or switch to “Until a date & time” to count down to an exam, launch or event. The remaining time also shows in the browser tab title, so you can work in another tab.
When the timer ends it plays a short beep, can show a system notification (if you allow it) and vibrates on supported phones. Because time is calculated from the end timestamp, the countdown stays accurate even if the tab sleeps.
How to use the Countdown Timer
- Choose duration or date mode.
- Set the time or pick a preset.
- Choose sound and notification options.
- Click Start; pause or reset any time.
Examples
Pomodoro
25-minute preset for focused work, then a 5-minute break.
Exam
Count down to 9:00 AM on exam day.
Common use cases
- Study and Pomodoro sessions
- Cooking and baking
- Presentations and classroom tasks
- Event countdowns
Features and benefits
- Private by design — your data is processed on your device and never uploaded.
- Free with no account, no watermark and no usage limits.
- Works on phones, tablets and desktops in any modern browser.
Limitations to know
- Browsers may block sound until you interact with the page — click Start yourself.
- Notifications require permission.
Frequently asked questions
Will it work if I switch tabs?
Yes, the countdown is time-based and the tab title shows remaining time.
Why didn’t I hear the alarm?
Check your volume and that the tab is not muted.
Can I count down to a date?
Yes, choose “Until a date & time”.
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