How to use the timer and the stopwatch

The page has two modes, which you switch with the buttons at the top: the timer, which counts down from a time you set, and the stopwatch, which counts up from zero.

Timer (countdown)

With the "Timer" mode active, fill in the hours, minutes and seconds fields (for example, 0 : 25 : 0 for 25 minutes).
Click "Start". The clock starts counting down.
Use "Pause" to stop it and "Start" to continue from where it left off.
When it reaches zero, the page plays three short beeps and shows the message "Time is up!".

Stopwatch

Click "Stopwatch". The time fields disappear and the display shows 00:00:00.
Click "Start" to begin counting and "Pause" to stop without losing the value.
"Reset" clears everything.

Features and limits

Display format in hours, minutes and seconds (HH:MM:SS).
In the timer, the fields accept hours from 0 to 23 and minutes and seconds from 0 to 59.
Accuracy with the tab in the background: the time is calculated from the device clock (start time and current time), not by adding one second at every tick. So if the browser slows down a hidden tab, the display may be slow to update, but when you come back it shows the correct value.
The display advances second by second; there are no hundredths and no lap recording. For race or lab timing with fractions of a second, this stopwatch is not the right tool.
Sound alert: the beep is generated by the browser itself, with no audio file. Browsers only allow sound after an interaction, so the audio is prepared when you click "Start". If the device has no volume, is muted or the tab is locked, the beep may not be heard, but the alert window still appears.
Switching modes or clicking "Reset" clears the time and empties the fields.

Practical examples

Studying in blocks: 25 minutes of focus on the timer, then 5 of break, repeating the Pomodoro technique.
Cooking: pasta, boiled egg, cake in the oven. Set the time and leave the tab open.
Meetings and presentations: limit each person's talk to 3 or 5 minutes.
Workouts: use the stopwatch to mark how long a plank set lasts or a rest between exercises.
Work tasks: time how long a repetitive process takes to estimate deadlines based on real data.
Games and activities: time rounds of questions or challenges with the kids.

Tips so you don't lose track of time

Even with a clock-based calculation, the browser may delay the alert and the beep of a background tab. For critical tasks, keep the tab visible or also use a phone alarm.
On phones, locking the screen may suspend the page and prevent the beep at the right time. Turn off the automatic lock or keep the screen on during the countdown.
For long times (above a few hours), prefer a phone alarm, which is more reliable.

Privacy and how it works

Everything runs in your browser. The times you type are not sent to any server or saved on the device, and the page asks for no permission. If you reload or close the tab, a countdown in progress is lost. The page shows ads; more details in the Privacy Policy.

Frequently asked questions

Does the timer play a sound at the end?

Yes. When it reaches zero, it plays three short beeps generated by the browser and shows the message "Time is up!". If the volume is low or the tab is in the background, the sound may go unnoticed; that is why the alert window still exists.

Does the clock fall behind if I switch tabs?

It should not. The time is calculated from the difference between the start time and the device's current time. The screen may only take a moment to update when you return to the tab.

Can I enter more than 23 hours?

The fields are limited to 23 hours, 59 minutes and 59 seconds. For longer periods, a calendar or an alarm is more suitable.

If I pause, is the time kept?

Yes. When you pause, the current value stays on the display and "Start" resumes from where it stopped. Only "Reset" or switching modes clears it.

Does the stopwatch record laps or hundredths of a second?

No, only hours, minutes and seconds, with no lap recording.

Does it work offline?

Once the page has loaded, the counting is done locally, but you need to be online to open the page itself.

⏱️ Timer & Stopwatch